{"id":123788,"date":"2026-11-08T06:00:57","date_gmt":"2026-11-07T22:00:57","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/123788.html"},"modified":"2026-11-08T06:00:57","modified_gmt":"2026-11-07T22:00:57","slug":"lte-3gpp%e6%8c%87%e6%a0%872-%e8%b0%83%e5%88%b6%e8%b4%a8%e9%87%8f-%e9%a2%91%e8%b0%b1%e5%bd%a2%e7%8a%b6","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/123788.html","title":{"rendered":"LTE 3GPP\u6307\u6807(2) - \u8c03\u5236\u8d28\u91cf &amp; \u9891\u8c31\u5f62\u72b6"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u603b\u89c8<\/li>\n<li>\u4e00\u3001Frequency Error (\u9891\u7387\u8bef\u5dee)<\/li>\n<li>\n<ul>\n<li>1. \u6587\u6863\u7d22\u5f15<\/li>\n<li>2. \u6838\u5fc3\u63cf\u8ff0<\/li>\n<li>3. \u6d4b\u8bd5\u76ee\u7684<\/li>\n<li>4. \u5e38\u89c1\u95ee\u9898<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001EVM (Error Vector Magnitude, \u8bef\u5dee\u77e2\u91cf\u5e45\u5ea6)<\/li>\n<li>\n<ul>\n<li>1. \u6587\u6863\u7d22\u5f15<\/li>\n<li>2. \u6838\u5fc3\u63cf\u8ff0<\/li>\n<li>3. \u6d4b\u8bd5\u76ee\u7684<\/li>\n<li>4. \u5e38\u89c1\u95ee\u9898<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001In-band Emissions (\u5e26\u5185\u6742\u6563 \/ \u9891\u8c31\u53d1\u5c04\u6a21\u677f)<\/li>\n<li>\n<ul>\n<li>1. \u6587\u6863\u7d22\u5f15<\/li>\n<li>2. \u6838\u5fc3\u63cf\u8ff0<\/li>\n<li>3. \u6d4b\u8bd5\u76ee\u7684<\/li>\n<li>4. \u5e38\u89c1\u95ee\u9898<\/li>\n<\/ul>\n<\/li>\n<li>Carrier Leakage \/ Origin Offset (\u8f7d\u6ce2\u6cc4\u6f0f \/ \u539f\u70b9\u504f\u79fb)<\/li>\n<li>\n<ul>\n<li>1. \u6587\u6863\u7d22\u5f15<\/li>\n<li>2. \u6838\u5fc3\u63cf\u8ff0<\/li>\n<li>3. \u6d4b\u8bd5\u76ee\u7684<\/li>\n<li>4. \u5e38\u89c1\u95ee\u9898<\/li>\n<li>5. \u600e\u4e48\u770b\u7efc\u6d4b\u4eea\u8bfb\u6570&#xff1f;(Intern Tip)<\/li>\n<\/ul>\n<\/li>\n<li>\u4e94\u3001ACLR (Adjacent Channel Leakage Ratio, \u90bb\u9053\u6cc4\u6f0f\u6bd4)<\/li>\n<li>\n<ul>\n<li>1. \u6587\u6863\u7d22\u5f15<\/li>\n<li>2. \u6838\u5fc3\u63cf\u8ff0<\/li>\n<li>3. \u6d4b\u8bd5\u76ee\u7684<\/li>\n<li>4. \u5e38\u89c1\u95ee\u9898<\/li>\n<li>5. ACLR \u4e0e MPR (Level 1 \u7684\u56de\u54cd)<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3&#xff1a;\u5c04\u9891\u53d1\u5c04\u673a\u6307\u6807\u5168\u666f\u56fe (Tx Hierarchy)<\/li>\n<\/ul>\n<h2>\u603b\u89c8<\/h2>\n<p>Level 2: \u8fdb\u9636\u7ea7 &#8211; \u4e0d\u4ec5\u8981\u6709&#xff0c;\u8fd8\u5f97\u8981\u201c\u51c6\u201d \u5173\u952e\u8bcd&#xff1a; \u8c03\u5236\u8d28\u91cf (Modulation Quality) &amp; \u9891\u8c31\u5f62\u72b6 \u6d89\u53ca\u7ae0\u8282&#xff1a; 36.101 Clause 6.5 &amp; 6.6 \u8fd9\u4e00\u5c42\u5f00\u59cb\u8003\u5bdf\u5c04\u9891\u94fe\u8def\u7684\u7ebf\u6027\u5ea6\u3002\u8fd9\u662f\u5c04\u9891\u5de5\u7a0b\u5e08\u65e5\u5e38\u8c03\u8bd5\u6700\u591a\u7684\u5730\u65b9\u3002<\/p>\n<table>\n<tr>\u6307\u6807\u540d\u79f0\u4e2d\u6587\u540d\u96be\u5ea6\u4e00\u53e5\u8bdd\u89e3\u91ca\u786c\u4ef6\u770b\u4ec0\u4e48<\/tr>\n<tbody>\n<tr>\n<td>Frequency Error<\/td>\n<td>\u9891\u7387\u8bef\u5dee<\/td>\n<td>\u2b50<\/td>\n<td>\u4f60\u7684 1800MHz \u504f\u4e86\u591a\u5c11&#xff1f;<\/td>\n<td>\u68c0\u67e5\u6676\u632f (XO\/TCXO)&#xff0c;\u5b83\u504f\u4e86\u5168\u76d8\u7686\u8f93\u3002<\/td>\n<\/tr>\n<tr>\n<td>EVM<\/td>\n<td>\u8bef\u5dee\u77e2\u91cf\u5e45\u5ea6<\/td>\n<td>\u2b50\u2b50<\/td>\n<td>64QAM \u7684\u661f\u5ea7\u56fe\u662f\u4e0d\u662f\u7cca\u4e86&#xff1f;<\/td>\n<td>\u6838\u5fc3\u6307\u6807&#xff01; \u68c0\u67e5 PA \u7ebf\u6027\u5ea6\u3001I\/Q \u8d70\u7ebf\u5e73\u8861\u3001\u672c\u632f\u76f8\u4f4d\u566a\u58f0\u3002<\/td>\n<\/tr>\n<tr>\n<td>In-band Emission<\/td>\n<td>\u5e26\u5185\u6742\u6563<\/td>\n<td>\u2b50\u2b50<\/td>\n<td>\u4f60\u7684\u4fe1\u53f7\u5728\u81ea\u5df1\u5206\u914d\u7684\u5e26\u5bbd\u5185\u662f\u5426\u5e73\u5766&#xff1f;<\/td>\n<td>\u68c0\u67e5\u57fa\u5e26\u6ee4\u6ce2\u548c\u6570\u5b57\u9884\u5931\u771f\u3002<\/td>\n<\/tr>\n<tr>\n<td>ACLR<\/td>\n<td>\u90bb\u9053\u6cc4\u6f0f\u6bd4<\/td>\n<td>\u2b50\u2b50\u2b50<\/td>\n<td>\u4f60\u7684\u4fe1\u53f7\u6709\u6ca1\u6709\u201c\u6ea2\u51fa\u201d\u5230\u9694\u58c1\u9891\u9053&#xff1f;<\/td>\n<td>\u6838\u5fc3\u6307\u6807&#xff01; \u51b3\u5b9a\u4e86\u4f60\u80fd\u4e0d\u80fd\u8fc7\u8ba4\u8bc1\u3002\u901a\u5e38\u662f PA \u9971\u548c\u4e86&#xff0c;\u8981\u8c03\u5339\u914d\u6216\u7535\u6e90\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li>\u901a\u5173\u6807\u5fd7&#xff1a; QPSK \u548c 16QAM \u4e0b&#xff0c;EVM &lt; 5%&#xff0c;ACLR &gt; 36dBc\u3002<\/li>\n<\/ul>\n<h2>\u4e00\u3001Frequency Error (\u9891\u7387\u8bef\u5dee)<\/h2>\n<h3>1. \u6587\u6863\u7d22\u5f15<\/h3>\n<ul>\n<li>\u7ae0\u8282\u4f4d\u7f6e&#xff1a; Clause 6.5.1 (P1365)<\/li>\n<li>\u6d4b\u8bd5\u6761\u4ef6&#xff1a; Table 6.5.1.4.1-1 (P1366)<\/li>\n<li>\u6d4b\u8bd5\u6807\u51c6&#xff1a; Table 6.5.1.5 (P1367)<\/li>\n<\/ul>\n<h3>2. \u6838\u5fc3\u63cf\u8ff0<\/h3>\n<p>\u5982\u679c\u8bf4\u529f\u7387\u51b3\u5b9a\u4e86\u4fe1\u53f7\u80fd\u201c\u6254\u591a\u8fdc\u201d&#xff0c;\u9891\u7387\u8bef\u5dee\u51b3\u5b9a\u4e86\u4fe1\u53f7\u201c\u7784\u5f97\u51c6\u4e0d\u51c6\u201d\u3002 \u5728 LTE (OFDM) \u7cfb\u7edf\u4e2d&#xff0c;\u5b50\u8f7d\u6ce2\u4e4b\u95f4\u7684\u95f4\u9694\u975e\u5e38\u7a84&#xff08;\u53ea\u6709 15 kHz&#xff09;\u3002<\/p>\n<ul>\n<li>\u673a\u5236&#xff1a; \u624b\u673a\u5e76\u4e0d\u662f\u81ea\u5df1\u4ea7\u751f\u4e00\u4e2a\u7edd\u5bf9\u9891\u7387&#xff0c;\u800c\u662f\u901a\u8fc7 AFC (\u81ea\u52a8\u9891\u7387\u63a7\u5236) \u9501\u5b9a\u57fa\u7ad9\u7684\u4e0b\u884c\u9891\u7387\u3002\u624b\u673a\u5148\u201c\u542c\u201d\u57fa\u7ad9\u7684\u97f3\u51c6&#xff0c;\u7136\u540e\u8c03\u8282\u81ea\u5df1\u7684\u6676\u632f (TCXO) \u53bb\u5bf9\u9f50&#xff0c;\u6700\u540e\u518d\u53d1\u5c04\u4fe1\u53f7\u3002<\/li>\n<li>\u7ea2\u7ebf&#xff1a; \u5bf9\u4e8e\u5927\u591a\u6570\u9891\u6bb5&#xff0c;\u8bef\u5dee\u4e0d\u80fd\u8d85\u8fc7 \u00b10.1 ppm (\u767e\u4e07\u5206\u4e4b\u4e00)\u3002\n<ul>\n<li>\u5b9e\u4f8b&#xff1a; \u5728 Band 3 (1750 MHz) \u4e0b&#xff0c;\u5141\u8bb8\u7684\u6700\u5927\u504f\u5dee\u4ec5\u4e3a \u00b1175 Hz\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>3. \u6d4b\u8bd5\u76ee\u7684<\/h3>\n<ul>\n<li>\u9632\u6b62\u5e72\u6270 (ICI)&#xff1a; LTE \u7684\u6b63\u4ea4\u6027&#xff08;Orthogonality&#xff09;\u4f9d\u8d56\u4e8e\u7cbe\u51c6\u7684\u9891\u7387\u5bf9\u9f50\u3002\u5982\u679c\u624b\u673a\u8dd1\u8c03\u4e86&#xff0c;\u5b83\u7684\u5b50\u8f7d\u6ce2\u5c31\u4f1a\u201c\u649e\u201d\u5230\u9694\u58c1\u7528\u6237\u7684\u5b50\u8f7d\u6ce2\u4e0a&#xff0c;\u9020\u6210\u8f7d\u6ce2\u95f4\u5e72\u6270 (Inter-Carrier Interference)&#xff0c;\u76f4\u63a5\u5bfc\u81f4\u7f51\u7edc\u89e3\u8c03\u5931\u8d25\u3002<\/li>\n<li>\u9a8c\u8bc1\u65f6\u949f\u786c\u4ef6&#xff1a; \u786e\u8ba4\u677f\u5b50\u4e0a\u7684\u6676\u632f (TCXO) \u8d28\u91cf\u662f\u5426\u8fc7\u5173&#xff0c;\u4ee5\u53ca\u7535\u6e90\u5bf9\u65f6\u949f\u7684\u5e72\u6270\u60c5\u51b5\u3002<\/li>\n<li>\u9a8c\u8bc1 AFC \u7b97\u6cd5&#xff1a; \u786e\u8ba4\u624b\u673a\u7684\u57fa\u5e26\u7b97\u6cd5\u80fd\u5426\u5728\u63a5\u6536\u5230\u57fa\u7ad9\u4fe1\u53f7\u540e&#xff0c;\u8fc5\u901f\u3001\u7a33\u5b9a\u5730\u9501\u5b9a\u9891\u7387\u3002<\/li>\n<\/ul>\n<h3>4. \u5e38\u89c1\u95ee\u9898<\/h3>\n<ul>\n<li>\u70ed\u6f02\u79fb (Thermal Drift)&#xff1a;\n<ul>\n<li>\u73b0\u8c61&#xff1a; \u521a\u5f00\u673a\u6d4b\u8bd5 Pass&#xff0c;\u4f46\u8dd1\u51e0\u5206\u949f\u5927\u529f\u7387&#xff08;\u624b\u673a\u53d1\u70ed&#xff09;\u540e&#xff0c;\u9891\u504f\u7a81\u7136 Fail\u3002<\/li>\n<li>\u539f\u56e0&#xff1a; \u6676\u632f (TCXO) \u79bb PA \u6216 CPU \u7b49\u53d1\u70ed\u6e90\u592a\u8fd1&#xff0c;\u4e14 PCB \u9694\u70ed\u8bbe\u8ba1\u4e0d\u597d\u3002\u867d\u7136\u662f\u201c\u6e29\u8865\u201d\u6676\u632f&#xff0c;\u4f46\u5267\u70c8\u7684\u6e29\u5ea6\u68af\u5ea6\u4f1a\u5bfc\u81f4\u8865\u507f\u5931\u6548\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u7535\u6e90\u566a\u58f0\u5e72\u6270 (Phase Noise\/Jitter)&#xff1a;\n<ul>\n<li>\u73b0\u8c61&#xff1a; \u9891\u504f\u8bfb\u6570\u4e0d\u7a33\u5b9a&#xff0c;\u5728\u90a3\u513f\u75af\u72c2\u8df3\u52a8\u3002<\/li>\n<li>\u539f\u56e0&#xff1a; \u7ed9\u6676\u632f\u4f9b\u7535\u7684 LDO \u7eb9\u6ce2\u592a\u5927&#xff0c;\u6216\u8005\u6676\u632f\u5e95\u4e0b\u7684\u5730\u5e73\u9762\u6709\u5e72\u6270\u56de\u6d41\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u63a5\u6536\u673a\u5931\u9501 (Rx Issue)&#xff1a;\n<ul>\n<li>\u73b0\u8c61&#xff1a; \u9891\u504f\u6781\u5927&#xff0c;\u751a\u81f3\u76f4\u63a5\u98d8\u8d70\u3002<\/li>\n<li>\u539f\u56e0&#xff1a; \u8fd9\u662f\u4e00\u4e2a\u63a5\u6536\u5bfc\u81f4\u53d1\u5c04\u9519\u8bef\u7684\u7ecf\u5178\u6848\u4f8b\u3002\u5982\u679c\u624b\u673a Rx \u7075\u654f\u5ea6\u5dee&#xff0c;\u542c\u4e0d\u6e05\u57fa\u7ad9\u7684\u4fe1\u53f7&#xff0c;AFC \u5c31\u65e0\u6cd5\u9501\u5b9a&#xff0c;\u53d1\u5c04\u9891\u7387\u81ea\u7136\u5c31\u662f\u4e71\u7684\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u4e8c\u3001EVM (Error Vector Magnitude, \u8bef\u5dee\u77e2\u91cf\u5e45\u5ea6)<\/h2>\n<h3>1. \u6587\u6863\u7d22\u5f15<\/h3>\n<ul>\n<li>\u7ae0\u8282\u4f4d\u7f6e&#xff1a; Clause 6.5.2 (P1400)<\/li>\n<li>\u6d4b\u8bd5\u6761\u4ef6&#xff1a;Table 6.5.2.1.4.1-1 (P1402)\n<ul>\n<li>\u9700\u8981\u6d4b\u8bd5\u6240\u6709\u652f\u6301\u7684\u8c03\u5236\u65b9\u5f0f (QPSK, 16QAM, 64QAM, 256QAM)\u3002<\/li>\n<li>\u9700\u8981\u6d4b\u8bd5 Low\/Mid\/High \u9891\u70b9\u3002<\/li>\n<li>\u9700\u8981\u6d4b\u8bd5\u4e0d\u540c\u7684 RB \u5206\u914d&#xff08;\u901a\u5e38\u5173\u6ce8 Full RB \u548c Edge RB&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6d4b\u8bd5\u6807\u51c6&#xff1a; Table 6.5.2.1.5 (P1405)&#xff1a;\n<ul>\n<li>QPSK: &lt; 17.5% (\u8981\u6c42\u4f4e)<\/li>\n<li>16QAM: &lt; 12.5%<\/li>\n<li>64QAM: &lt; 8% (\u8981\u6c42\u9ad8)<\/li>\n<li>256QAM: &lt; 3.5% (\u70bc\u72f1\u6a21\u5f0f)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>2. \u6838\u5fc3\u63cf\u8ff0<\/h3>\n<p>EVM \u8861\u91cf\u7684\u662f**\u201c\u7406\u60f3\u201d\u4e0e\u201c\u73b0\u5b9e\u201d\u7684\u5dee\u8ddd**\u3002 \u60f3\u8c61\u4f60\u5728\u73a9\u98de\u9556 (Darts)&#xff1a;<\/p>\n<ul>\n<li>\u7406\u60f3\u70b9 (Ideal Symbol): \u9776\u5fc3\u3002\u534f\u8bae\u89c4\u5b9a\u5982\u679c\u4f60\u53d1\u201c1101\u201d&#xff0c;\u4fe1\u53f7\u5c31\u5e94\u8be5\u7cbe\u51c6\u5730\u843d\u5728\u661f\u5ea7\u56fe\u7684\u67d0\u4e00\u4e2a\u70b9\u4e0a\u3002<\/li>\n<li>\u6d4b\u91cf\u70b9 (Measured Symbol): \u4f60\u7684\u98de\u9556\u5b9e\u9645\u63d2\u5728\u9776\u5b50\u4e0a\u7684\u4f4d\u7f6e\u3002<\/li>\n<li>\u8bef\u5dee\u77e2\u91cf (Error Vector): \u4ece\u201c\u7406\u60f3\u70b9\u201d\u8fde\u4e00\u6761\u7ebf\u5230\u201c\u6d4b\u91cf\u70b9\u201d&#xff0c;\u8fd9\u6761\u7ebf\u7684\u957f\u5ea6\u5c31\u662f EVM\u3002 EVM \u662f\u6240\u6709\u7b26\u53f7\u8bef\u5dee\u7684\u5747\u65b9\u6839 (RMS) \u503c\u3002\u901a\u5e38\u7528\u767e\u5206\u6bd4 (%) \u8868\u793a\u3002<\/li>\n<li>EVM &#061; 0%: \u5b8c\u7f8e&#xff0c;\u98de\u9556\u6b21\u6b21\u6b63\u4e2d\u7ea2\u5fc3\u3002<\/li>\n<li>EVM \u5927: \u98de\u9556\u6ee1\u9776\u5b50\u4e71\u98de\u3002\u5982\u679c\u98de\u5f97\u592a\u504f&#xff0c;\u63a5\u6536\u7aef\u5c31\u4f1a\u628a\u201c\u70b9A\u201d\u8bef\u5224\u6210\u65c1\u8fb9\u7684\u201c\u70b9B\u201d&#xff0c;\u5bfc\u81f4\u8bef\u7801 (Bit Error)\u3002<\/li>\n<\/ul>\n<h3>3. \u6d4b\u8bd5\u76ee\u7684<\/h3>\n<ul>\n<li>\u4fdd\u8bc1\u6570\u636e\u541e\u5410\u91cf (Throughput): \u9ad8\u9636\u8c03\u5236 (\u5982 64QAM) \u7684\u661f\u5ea7\u70b9\u975e\u5e38\u5bc6\u96c6\u3002\u5982\u679c EVM \u4e0d\u597d&#xff0c;\u70b9\u4e0e\u70b9\u4e4b\u95f4\u5c31\u4f1a\u7cca\u5728\u4e00\u8d77&#xff0c;\u5bfc\u81f4\u89e3\u8c03\u5931\u8d25&#xff0c;\u624b\u673a\u53ea\u80fd\u56de\u9000\u5230\u4f4e\u901f\u7684 QPSK\u3002<\/li>\n<li>\u7efc\u5408\u4f53\u68c0&#xff1a; EVM \u4e0d\u662f\u4e00\u4e2a\u5355\u4e00\u6307\u6807&#xff0c;\u5b83\u662f\u4e00\u4e2a\u7efc\u5408\u6307\u6807\u3002\u5b83\u80fd\u50cf X \u5149\u4e00\u6837&#xff0c;\u53cd\u6620\u51fa\u5c04\u9891\u94fe\u8def\u4e2d\u4efb\u4f55\u4e00\u4e2a\u73af\u8282\u7684\u201c\u810f\u4e1c\u897f\u201d&#xff08;\u566a\u58f0\u3001\u975e\u7ebf\u6027\u3001\u5e72\u6270&#xff09;\u3002<\/li>\n<\/ul>\n<h3>4. \u5e38\u89c1\u95ee\u9898<\/h3>\n<p>EVM \u6302\u4e86&#xff0c;\u4e0d\u8981\u614c\u3002\u770b\u661f\u5ea7\u56fe (Constellation Diagram) \u662f\u89e3\u51b3\u95ee\u9898\u7684\u5173\u952e\u3002\u4e0d\u540c\u7684\u201c\u6b7b\u6cd5\u201d\u5bf9\u5e94\u4e0d\u540c\u7684\u786c\u4ef6\u95ee\u9898&#xff1a; \u5e26\u56fe\u661f\u5ea7\u56fe\u95ee\u9898\u63cf\u8ff0&#xff1a;\u661f\u5ea7\u56fe&#xff0c;\u4e5f\u53ef\u4ee5\u662f\u5c04\u9891\u4eba\u5458debug\u7684\u597d\u5e2e\u624b \u60c5\u51b5 A&#xff1a;\u661f\u5ea7\u56fe\u88ab\u201c\u538b\u6241\u201d\u4e86 (Compression\/Saturation)<\/p>\n<ul>\n<li>\u73b0\u8c61&#xff1a; \u661f\u5ea7\u56fe\u5916\u5708\u7684\u56db\u4e2a\u89d2&#xff08;\u5e45\u5ea6\u6700\u5927\u7684\u70b9&#xff09;\u5411\u5185\u584c\u9677&#xff0c;\u53d8\u5706\u4e86\u3002<\/li>\n<li>\u786c\u4ef6\u539f\u56e0&#xff1a; PA \u9971\u548c (PA Saturation)\u3002\n<ul>\n<li>PA \u63a8\u4e0d\u52a8\u4e86&#xff0c;\u8fdb\u5165\u4e86\u975e\u7ebf\u6027\u533a&#xff0c;\u53d1\u751f\u4e86\u524a\u9876 (Clipping)\u3002<\/li>\n<li>\u5bf9\u7b56&#xff1a; \u68c0\u67e5 PA \u4f9b\u7535\u7535\u538b (VCC) \u662f\u5426\u88ab\u62c9\u4f4e&#xff1f;\u68c0\u67e5\u5339\u914d\u7535\u8def\u662f\u5426\u6700\u4f73&#xff1f;\u68c0\u67e5\u8f93\u5165\u529f\u7387\u662f\u5426\u8fc7\u5927&#xff1f; \u60c5\u51b5 B&#xff1a;\u661f\u5ea7\u56fe\u7684\u70b9\u50cf\u201c\u9017\u53f7\u201d\u6216\u201c\u5706\u5f27\u201d (Phase Noise)<\/li>\n<\/ul>\n<\/li>\n<li>\u73b0\u8c61&#xff1a; \u661f\u5ea7\u70b9\u6ca1\u6709\u6563\u5f00&#xff0c;\u800c\u662f\u7ed5\u7740\u5706\u5fc3\u53d1\u751f\u4e86\u65cb\u8f6c&#xff0c;\u50cf\u62d6\u7740\u5c3e\u5df4\u3002<\/li>\n<li>\u786c\u4ef6\u539f\u56e0&#xff1a; \u76f8\u4f4d\u566a\u58f0 (Phase Noise)\u3002\n<ul>\n<li>\u6676\u632f\u6216 PLL \u4e0d\u5e72\u51c0&#xff0c;\u6216\u8005\u7535\u6e90\u7eb9\u6ce2\u5e72\u6270\u4e86\u672c\u632f (LO)\u3002<\/li>\n<li>\u5bf9\u7b56&#xff1a; \u68c0\u67e5 PMIC \u7ed9 Transceiver \u4f9b\u7535\u7684 LDO \u662f\u5426\u6709\u7eb9\u6ce2&#xff1f;\u68c0\u67e5 DC-DC \u5f00\u5173\u9891\u7387\u662f\u5426\u4e32\u6270&#xff1f; \u60c5\u51b5 C&#xff1a;\u661f\u5ea7\u56fe\u4e2d\u5fc3\u6709\u4e2a\u70b9 (LO Leakage)<\/li>\n<\/ul>\n<\/li>\n<li>\u73b0\u8c61&#xff1a; \u5728\u661f\u5ea7\u56fe\u7684\u6700\u4e2d\u5fc3&#xff08;\u539f\u70b9&#xff09;\u6709\u4e00\u4e2a\u4e0d\u8be5\u51fa\u73b0\u7684\u4eae\u70b9\u3002<\/li>\n<li>\u786c\u4ef6\u539f\u56e0&#xff1a; \u672c\u632f\u6cc4\u6f0f (I\/Q Offset)\u3002\n<ul>\n<li>I \u8def\u548c Q \u8def\u7684\u76f4\u6d41\u5206\u91cf\u6ca1\u6821\u51c6\u5e72\u51c0\u3002<\/li>\n<li>\u5bf9\u7b56&#xff1a; \u91cd\u65b0\u505a Tx DC Offset \u6821\u51c6\u3002 \u60c5\u51b5 D&#xff1a;\u661f\u5ea7\u56fe\u6574\u4f53\u504f\u4e86\u6216\u6241\u4e86 (I\/Q Imbalance)<\/li>\n<\/ul>\n<\/li>\n<li>\u73b0\u8c61&#xff1a; \u6b63\u65b9\u5f62\u7684\u661f\u5ea7\u56fe\u53d8\u6210\u4e86\u957f\u65b9\u5f62&#xff0c;\u6216\u8005\u83f1\u5f62\u3002<\/li>\n<li>\u786c\u4ef6\u539f\u56e0&#xff1a; I\/Q \u4e0d\u5e73\u8861\u3002\n<ul>\n<li>Transceiver \u5230 CPU \u4e4b\u95f4\u7684 I\/Q \u5dee\u5206\u8d70\u7ebf\u957f\u5ea6\u4e0d\u4e00\u81f4&#xff0c;\u6216\u8005\u963b\u6297\u4e0d\u5339\u914d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u4e09\u3001In-band Emissions (\u5e26\u5185\u6742\u6563 \/ \u9891\u8c31\u53d1\u5c04\u6a21\u677f)<\/h2>\n<h3>1. \u6587\u6863\u7d22\u5f15<\/h3>\n<ul>\n<li>\u7ae0\u8282\u4f4d\u7f6e&#xff1a; Clause 6.5.2.3 (P1468)<\/li>\n<li>\u6d4b\u8bd5\u6761\u4ef6&#xff1a;Table 6.5.2.3.4.1-1\/2 (P1471)\n<ul>\n<li>\u5173\u952e\u70b9&#xff1a; \u5fc5\u987b\u5728 \u975e\u5168\u8d44\u6e90\u5757 (Partial RB) \u914d\u7f6e\u4e0b\u6d4b\u8bd5\u3002<\/li>\n<li>\u4f8b\u5b50&#xff1a; 20MHz \u5e26\u5bbd (100 RB)&#xff0c;\u4f60\u53ea\u53d1\u524d 10 \u4e2a RB\u3002\u5269\u4e0b\u7684 90 \u4e2a RB \u5e94\u8be5\u662f\u201c\u5b89\u9759\u201d\u7684\u3002\u8fd9\u4e2a\u6d4b\u8bd5\u5c31\u662f\u770b\u5269\u4e0b\u7684\u90a3 90 \u4e2a RB \u91cc\u6709\u6ca1\u6709\u5783\u573e\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6d4b\u8bd5\u6807\u51c6&#xff1a;Table 6.5.2.3.5-1\/2 (P1473)\n<ul>\n<li>\u8868\u683c\u6bd4\u8f83\u590d\u6742&#xff0c;\u662f\u4e00\u4e2a\u9636\u68af\u72b6\u7684 Limit Mask (\u9650\u5236\u6a21\u677f)\u3002\u8ddd\u79bb\u53d1\u5c04 RB \u8d8a\u8fdc&#xff0c;\u8981\u6c42\u8d8a\u4e25\u683c&#xff08;\u5141\u8bb8\u7684\u529f\u7387\u8d8a\u4f4e&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>2. \u6838\u5fc3\u63cf\u8ff0<\/h3>\n<p>\u201c\u5404\u56de\u5404\u5bb6&#xff0c;\u5404\u627e\u5404\u5988\u201d\u3002 \u5728 LTE \u4e00\u4e2a\u4fe1\u9053\u5e26\u5bbd\u5185&#xff08;\u6bd4\u5982 20MHz&#xff09;&#xff0c;\u4e0d\u4ec5\u53ea\u6709\u4f60\u4e00\u4e2a\u7528\u6237\u3002<\/p>\n<ul>\n<li>\u5982\u679c\u4f60\u53ea\u88ab\u5206\u914d\u4e86 RB#0 ~ RB#11 (\u5de6\u8fb9)&#xff0c;\u90a3\u4e48 RB#12 ~ RB#99 (\u53f3\u8fb9) \u53ef\u80fd\u662f\u5206\u914d\u7ed9\u522b\u4eba\u7684\u3002<\/li>\n<li>In-band Emissions \u5c31\u662f\u6d4b\u91cf&#xff1a;\u4f60\u5728\u4f60\u5206\u914d\u7684 RB \u4e0a\u53d1\u5c04\u65f6&#xff0c;\u6709\u6ca1\u6709\u628a\u5783\u573e\u80fd\u91cf\u6e85\u5c04\u5230\u540c\u4e00\u4e2a\u4fe1\u9053\u5185\u3001\u672a\u5206\u914d\u7ed9\u4f60\u7684\u90a3\u4e9b RB \u4e0a&#xff1f; \u5b83\u5305\u542b\u4e24\u90e8\u5206\u201c\u5783\u573e\u201d&#xff1a;<\/li>\n<li>General Emissions: \u7531\u4e8e PA \u975e\u7ebf\u6027\u4ea7\u751f\u7684\u5bbd\u5e26\u5e95\u566a\u62ac\u5347\u3002<\/li>\n<li>I\/Q Image (\u955c\u50cf\u9891\u7387): \u8fd9\u662f\u91cd\u70b9&#xff01; \u7531\u4e8e I\/Q \u4e0d\u5e73\u8861&#xff0c;\u5982\u679c\u4f60\u5728\u9891\u5e26\u5de6\u8fb9\u53d1\u5c04&#xff0c;\u4f1a\u5728\u9891\u5e26\u53f3\u8fb9\u5bf9\u79f0\u7684\u4f4d\u7f6e\u4ea7\u751f\u4e00\u4e2a\u201c\u9b3c\u5f71\u201d\u3002<\/li>\n<\/ul>\n<h3>3. \u6d4b\u8bd5\u76ee\u7684<\/h3>\n<ul>\n<li>\u4fdd\u62a4\u540c\u5c0f\u533a\u7684\u5176\u4ed6\u7528\u6237&#xff1a;\n<ul>\n<li>ACLR \u662f\u6015\u5e72\u6270\u5230\u9694\u58c1\u5c0f\u533a&#xff08;\u90bb\u9053&#xff09;\u3002<\/li>\n<li>In-band Emissions \u662f\u6015\u5e72\u6270\u5230\u81ea\u5df1\u5c0f\u533a\u91cc\u7684\u5144\u5f1f&#xff08;\u540c\u4e00\u4e2a 20MHz \u91cc\u7684\u5176\u4ed6 RB&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6355\u6349 I\/Q \u955c\u50cf&#xff1a; \u8fd9\u662f EVM \u6d4b\u4e0d\u51fa\u6765\u7684\u3002EVM \u6d4b\u7684\u662f\u6709\u4fe1\u53f7\u7684\u5730\u65b9&#xff0c;IBE \u6d4b\u7684\u662f\u6ca1\u4fe1\u53f7\u7684\u5730\u65b9\u3002<\/li>\n<\/ul>\n<h3>4. \u5e38\u89c1\u95ee\u9898<\/h3>\n<p>\u8fd9\u4e2a\u6307\u6807 Fail \u4e86&#xff0c;\u901a\u5e38\u975e\u5e38\u6709\u7279\u5f81&#xff0c;\u786c\u4ef6\u539f\u56e0\u4e5f\u662f\u201c\u4e8c\u9009\u4e00\u201d&#xff1a; \u573a\u666f A&#xff1a;\u6574\u4e2a\u5e95\u566a\u90fd\u9ad8\u4e86 (Floor Failure)<\/p>\n<ul>\n<li>\u73b0\u8c61&#xff1a; \u672a\u5206\u914d\u7684 RB \u533a\u57df&#xff0c;\u566a\u58f0\u6574\u4f53\u62ac\u5347&#xff0c;\u8d85\u8fc7\u4e86 Mask\u3002<\/li>\n<li>\u539f\u56e0&#xff1a; PA \u7ebf\u6027\u5ea6\u5dee \u6216 \u672c\u632f\u76f8\u4f4d\u566a\u58f0\u5927\u3002<\/li>\n<li>\u903b\u8f91&#xff1a; \u548c ACLR \u53d8\u5dee\u7684\u539f\u56e0\u7c7b\u4f3c&#xff0c;\u975e\u7ebf\u6027\u5bfc\u81f4\u9891\u8c31\u518d\u751f\u3002 \u573a\u666f B&#xff1a;\u4e5f\u5c31\u662f\u6700\u7ecf\u5178\u7684\u201c\u955c\u50cf\u5e72\u6270\u201d (Image Failure)<\/li>\n<li>\u73b0\u8c61&#xff1a; \u4f60\u5728 RB#0 \u53d1\u5c04&#xff0c;\u5374\u5728 RB#Max \u9644\u8fd1\u770b\u5230\u4e86\u4e00\u4e2a\u5c16\u5cf0\u3002<\/li>\n<li>\u539f\u56e0&#xff1a; I\/Q Imbalance (I\/Q \u4e0d\u5e73\u8861)\u3002\n<ul>\n<li>\u7269\u7406\u539f\u7406&#xff1a; \u5982\u679c I \u8def\u548c Q \u8def\u7684\u5e45\u5ea6\u4e0d\u4e00\u81f4&#xff08;\u6bd4\u5982\u5dee\u4e86 0.5dB&#xff09;\u6216\u8005\u76f8\u4f4d\u4e0d\u662f\u4e25\u683c\u7684 90\u5ea6&#xff08;\u6bd4\u5982 88\u5ea6&#xff09;&#xff0c;\u6570\u5b66\u516c\u5f0f\u544a\u8bc9\u6211\u4eec&#xff1a;e^{j\\\\omega t} \u4f1a\u6df7\u5165 e^{-j\\\\omega t} \u7684\u5206\u91cf\u3002<\/li>\n<li>\u901a\u4fd7\u89e3\u91ca&#xff1a; \u6b63\u9891\u7387&#xff08;\u6709\u7528\u4fe1\u53f7&#xff09;\u6cc4\u9732\u5230\u4e86\u8d1f\u9891\u7387&#xff08;\u955c\u50cf\u4f4d\u7f6e&#xff09;\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5bf9\u7b56&#xff1a; \u68c0\u67e5 Transceiver \u51fa\u6765\u7684 I\/Q \u5dee\u5206\u7ebf&#xff0c;\u662f\u4e0d\u662f\u957f\u5ea6\u4e0d\u5339\u914d&#xff1f;\u6216\u8005\u5df4\u4f26 (Balun) \u4e5f\u5c31\u662f\u5339\u914d\u7535\u8def\u91cc\u7684\u7535\u5bb9\u7535\u611f\u710a\u6b6a\u4e86&#xff1f;<\/li>\n<\/ul>\n<h2>Carrier Leakage \/ Origin Offset (\u8f7d\u6ce2\u6cc4\u6f0f \/ \u539f\u70b9\u504f\u79fb)<\/h2>\n<h3>1. \u6587\u6863\u7d22\u5f15<\/h3>\n<ul>\n<li>\u7ae0\u8282\u4f4d\u7f6e&#xff1a; Clause 6.5.2.2 (P1449)<\/li>\n<li>\u6d4b\u8bd5\u6761\u4ef6&#xff1a; Table 6.5.2.2.4.1-1 (P1450)<\/li>\n<li>\u5224\u5b9a\u6807\u51c6&#xff1a; Table 6.5.2.2.5-1\/2 (P1451)<\/li>\n<\/ul>\n<h3>2. \u6838\u5fc3\u63cf\u8ff0<\/h3>\n<p>\u201c\u5e7d\u7075\u76f4\u6d41 (Ghost DC)\u201d\u3002 \u7406\u60f3\u60c5\u51b5\u4e0b&#xff0c;\u5f53\u4f60\u7684 Modem \u53d1\u9001\u201c\u5168 0\u201d\u6570\u636e&#xff08;\u4e0d\u53d1\u5c04&#xff09;\u65f6&#xff0c;\u5c04\u9891\u53e3\u5e94\u8be5\u6ca1\u6709\u4efb\u4f55\u80fd\u91cf\u3002 \u4f46\u5b9e\u9645\u4e0a&#xff0c;\u5373\u4f7f\u4f60\u4ec0\u4e48\u90fd\u4e0d\u53d1&#xff0c;\u5728\u4e2d\u5fc3\u9891\u7387 (LO Frequency) \u5904\u4f9d\u7136\u6709\u4e00\u6839\u987d\u56fa\u7684\u7ad6\u7ebf\u3002<\/p>\n<ul>\n<li>\u516c\u5f0f\u63cf\u8ff0&#xff1a; <span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>          R<\/p>\n<p>           F<\/p>\n<p>            o<\/p>\n<p>            u<\/p>\n<p>            t<\/p>\n<p>          (<\/p>\n<p>          t<\/p>\n<p>          )<\/p>\n<p>          &#061;<\/p>\n<p>          I<\/p>\n<p>          (<\/p>\n<p>          t<\/p>\n<p>          )<\/p>\n<p>          \u22c5<\/p>\n<p>          c<\/p>\n<p>          o<\/p>\n<p>          s<\/p>\n<p>          (<\/p>\n<p>          \u03c9<\/p>\n<p>          t<\/p>\n<p>          )<\/p>\n<p>          \u2212<\/p>\n<p>          Q<\/p>\n<p>          (<\/p>\n<p>          t<\/p>\n<p>          )<\/p>\n<p>          \u22c5<\/p>\n<p>          s<\/p>\n<p>          i<\/p>\n<p>          n<\/p>\n<p>          (<\/p>\n<p>          \u03c9<\/p>\n<p>          t<\/p>\n<p>          )<\/p>\n<p>          RF_{out}(t) &#061; I(t) \\\\cdot cos(\\\\omega t) &#8211; Q(t) \\\\cdot sin(\\\\omega t)<\/p>\n<p>      <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0077em\">R<\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">F<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2806em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1389em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">o<\/span><span class=\"mord mathnormal mtight\">u<\/span><span class=\"mord mathnormal mtight\">t<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0785em\">I<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u22c5<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\">cos<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">\u03c9<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\">Q<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u22c5<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\">s<\/span><span class=\"mord mathnormal\">in<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">\u03c9<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span><\/span> \u5176\u4e2d <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         c<\/p>\n<p>         o<\/p>\n<p>         s<\/p>\n<p>         (<\/p>\n<p>         \u03c9<\/p>\n<p>         t<\/p>\n<p>         )<\/p>\n<p>        cos(\\\\omega t)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\">cos<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">\u03c9<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span> \u548c <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         s<\/p>\n<p>         i<\/p>\n<p>         n<\/p>\n<p>         (<\/p>\n<p>         \u03c9<\/p>\n<p>         t<\/p>\n<p>         )<\/p>\n<p>        sin(\\\\omega t)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\">s<\/span><span class=\"mord mathnormal\">in<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">\u03c9<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span> \u5373\u4e3a\u8f7d\u6ce2\u90e8\u5206&#xff0c;\u5f53 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         I<\/p>\n<p>         (<\/p>\n<p>         t<\/p>\n<p>         )<\/p>\n<p>        I(t)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0785em\">I<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span> \u6216 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         Q<\/p>\n<p>         (<\/p>\n<p>         t<\/p>\n<p>         )<\/p>\n<p>        Q(t)<\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathnormal\">Q<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">t<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span> \u51fa\u73b0\u76f4\u6d41\u504f\u7f6e\u5c31\u4f1a\u51fa\u73b0\u8f7d\u6ce2\u6cc4\u6f0f\u3002<\/li>\n<li>\u661f\u5ea7\u56fe\u8868\u73b0&#xff1a;\n<ul>\n<li>\u7406\u60f3\u7684\u661f\u5ea7\u56fe\u539f\u70b9 (0,0) \u662f\u6ca1\u6709\u80fd\u91cf\u7684\u3002<\/li>\n<li>\u6709\u8f7d\u6ce2\u6cc4\u6f0f\u65f6&#xff0c;\u6574\u4e2a\u661f\u5ea7\u56fe\u7684\u4e2d\u5fc3\u504f\u79bb\u4e86\u5750\u6807\u8f74\u539f\u70b9\u3002\u6216\u8005\u8bf4&#xff0c;\u6709\u4e00\u4e2a\u6052\u5b9a\u7684\u76f4\u6d41\u77e2\u91cf (DC Vector) \u53e0\u52a0\u5728\u4e86\u6240\u6709\u4fe1\u53f7\u4e0a\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>3. \u6d4b\u8bd5\u76ee\u7684<\/h3>\n<ul>\n<li>EVM \u7684\u9690\u5f62\u6740\u624b&#xff1a; \u5982\u679c\u539f\u70b9\u504f\u79fb\u592a\u5927&#xff0c;\u7b49\u4e8e\u7ed9\u6bcf\u4e2a\u7b26\u53f7\u90fd\u52a0\u4e86\u4e00\u4e2a\u56fa\u5b9a\u7684\u8bef\u5dee\u77e2\u91cf\u3002\u5982\u679c\u4e0d\u4fee\u597d\u5b83&#xff0c;\u4f60\u7684 EVM \u6c38\u8fdc\u4e0d\u53ef\u80fd\u505a\u5230 &lt; 1% (\u5373\u4f7f PA \u7ebf\u6027\u5ea6\u518d\u597d)\u3002<\/li>\n<li>\u8d44\u6e90\u6d6a\u8d39&#xff1a; \u8fd9\u90e8\u5206\u80fd\u91cf\u4e0d\u643a\u5e26\u4efb\u4f55\u4fe1\u606f&#xff0c;\u7eaf\u7cb9\u662f\u6d6a\u8d39\u7535&#xff0c;\u800c\u4e14\u4f1a\u5e72\u6270\u63a5\u6536\u7aef\u7684\u89e3\u8c03\u540c\u6b65&#xff08;\u5c24\u5176\u662f Zero-IF \u96f6\u4e2d\u9891\u63a5\u6536\u673a&#xff09;\u3002<\/li>\n<\/ul>\n<h3>4. \u5e38\u89c1\u95ee\u9898<\/h3>\n<p>\u8fd9\u662f\u6700\u5bb9\u6613\u4fee&#xff0c;\u4e5f\u6700\u5bb9\u6613\u88ab\u9057\u5fd8\u7684\u6307\u6807\u3002 \u539f\u56e0 A&#xff1a;I\/Q \u76f4\u6d41\u504f\u7f6e\u6ca1\u6821\u51c6 (DC Offset)<\/p>\n<ul>\n<li>\u539f\u7406&#xff1a; Transceiver \u8f93\u51fa\u7684 I \u8def\u548c Q \u8def\u5dee\u5206\u4fe1\u53f7&#xff0c;\u5176\u5171\u6a21\u7535\u538b (Common Mode Voltage) \u4e0d\u5b8c\u5168\u4e00\u81f4\u3002\n<ul>\n<li>\u6bd4\u5982&#xff1a;I&#043; &#061; 1.01V, I- &#061; 0.99V (\u5dee\u5206 0.02V)\u3002\u8fd9\u5c31\u76f8\u5f53\u4e8e\u6709\u4e00\u4e2a\u6052\u5b9a\u7684\u76f4\u6d41\u7535\u5e73\u8f93\u5165\u5230\u4e86\u6df7\u9891\u5668\u3002<\/li>\n<li>\u6839\u636e\u6df7\u9891\u539f\u7406&#xff1a;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>           \u76f4\u6d41<\/p>\n<p>           (<\/p>\n<p>           0<\/p>\n<p>           \u00a0Hz<\/p>\n<p>           )<\/p>\n<p>           \u00d7<\/p>\n<p>           \u672c\u632f<\/p>\n<p>           (<\/p>\n<p>            f<\/p>\n<p>             L<\/p>\n<p>             O<\/p>\n<p>           )<\/p>\n<p>           &#061;<\/p>\n<p>            f<\/p>\n<p>             L<\/p>\n<p>             O<\/p>\n<p>           (<\/p>\n<p>           \u8f7d\u6ce2\u672c\u8eab<\/p>\n<p>           )<\/p>\n<p>          \u76f4\u6d41(0 \\\\text{ Hz}) \\\\times \u672c\u632f (f_{LO}) &#061; f_{LO} (\u8f7d\u6ce2\u672c\u8eab)<\/p>\n<p>       <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord cjk_fallback\">\u76f4\u6d41<\/span><span class=\"mopen\">(<\/span><span class=\"mord\">0<\/span><span class=\"mord text\"><span class=\"mord\">\u00a0Hz<\/span><\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u00d7<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord cjk_fallback\">\u672c\u632f<\/span><span class=\"mopen\">(<\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1076em\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3283em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1076em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">L<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0278em\">O<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1076em\">f<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3283em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1076em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">L<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0278em\">O<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">(<\/span><span class=\"mord cjk_fallback\">\u8f7d\u6ce2\u672c\u8eab<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span> \u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5bf9\u7b56&#xff1a; \u91cd\u65b0\u8fd0\u884c\u8f6f\u4ef6\u7684 Tx DC Calibration\u3002\u901a\u5e38\u662f\u6821\u51c6\u53c2\u6570\u4e22\u4e86&#xff0c;\u6216\u8005\u6e29\u5ea6\u53d8\u5316\u592a\u5927\u5bfc\u81f4\u539f\u6821\u51c6\u5931\u6548\u3002 \u539f\u56e0 B&#xff1a;\u672c\u632f\u9694\u79bb\u5ea6\u5dee (LO Isolation)<\/li>\n<li>\u539f\u7406&#xff1a; \u5c04\u9891\u6536\u53d1\u5668\u5185\u90e8\u7684 VCO\/PLL \u4fe1\u53f7&#xff0c;\u6ca1\u6709\u7ecf\u8fc7\u6df7\u9891\u5668&#xff0c;\u76f4\u63a5\u901a\u8fc7\u57fa\u677f\u8d70\u7ebf\u6216\u8005\u82af\u7247\u5185\u90e8\u7684\u5bc4\u751f\u7535\u5bb9\u201c\u9003\u9038\u201d\u5230\u4e86 PA \u8f93\u5165\u7aef\u3002<\/li>\n<li>\u5bf9\u7b56&#xff1a;\n<ul>\n<li>\u68c0\u67e5 Layout&#xff1a;LO \u76f8\u5173\u7684\u8d70\u7ebf\u662f\u5426\u79bb PA \u8f93\u5165\u592a\u8fd1&#xff1f;<\/li>\n<li>\u68c0\u67e5\u5c4f\u853d\u7f69&#xff1a;\u662f\u5426\u56e0\u4e3a\u5c4f\u853d\u7f69\u6ca1\u6263\u597d&#xff0c;\u5bfc\u81f4\u7a7a\u95f4\u8f90\u5c04\u8026\u5408&#xff1f; \u539f\u56e0 C&#xff1a;PA \u7684\u53cd\u5411\u6cc4\u6f0f<\/li>\n<\/ul>\n<\/li>\n<li>\u539f\u7406&#xff1a; \u6781\u5c11\u6570\u60c5\u51b5\u4e0b&#xff0c;PA \u7684\u8f93\u51fa\u4fe1\u53f7\u53cd\u5c04\u56de\u6765\u5e72\u6270\u4e86\u6df7\u9891\u5668\u7684\u5de5\u4f5c\u70b9\u3002<\/li>\n<\/ul>\n<h3>5. \u600e\u4e48\u770b\u7efc\u6d4b\u4eea\u8bfb\u6570&#xff1f;(Intern Tip)<\/h3>\n<ul>\n<li>\u5355\u4f4d&#xff1a;dBc (\u5206\u8d1d\u8f7d\u6ce2&#xff0c;\u5373\u76f8\u5bf9\u4e8e\u8f7d\u6ce2\u7684\u6bd4\u503c)<\/li>\n<li>\u8bfb\u6570\u662f -20 dBc&#xff1a;\u8bf4\u660e\u6cc4\u6f0f\u5f88\u5927&#xff0c;EVM \u80af\u5b9a\u6302\u4e86&#xff0c;\u5feb\u53bb\u68c0\u67e5\u6821\u51c6\u3002<\/li>\n<li>\u8bfb\u6570\u662f -50 dBc&#xff1a;\u8bf4\u660e\u6cc4\u6f0f\u5f88\u5c0f&#xff0c;\u505a\u5f97\u5f88\u597d&#xff0c;\u5bf9 EVM \u51e0\u4e4e\u65e0\u5f71\u54cd\u3002<\/li>\n<\/ul>\n<h2>\u4e94\u3001ACLR (Adjacent Channel Leakage Ratio, \u90bb\u9053\u6cc4\u6f0f\u6bd4)<\/h2>\n<h3>1. \u6587\u6863\u7d22\u5f15<\/h3>\n<ul>\n<li>\u7ae0\u8282\u4f4d\u7f6e&#xff1a; Clause 6.6.2.3 (P1843)<\/li>\n<li>\u6d4b\u8bd5\u6761\u4ef6&#xff1a;Table 6.6.2.3.4.1-1 (P1845)\n<ul>\n<li>\u914d\u7f6e&#xff1a; \u901a\u5e38\u5728 Full RB (\u6ee1\u8d44\u6e90\u5757) \u4e0b\u6700\u5dee&#xff0c;\u4e5f\u6700\u5e38\u6d4b\u3002<\/li>\n<li>\u90bb\u5c45\u7c7b\u578b&#xff1a; 3GPP \u8981\u6c42\u540c\u65f6\u6d4b\u91cf\u4e24\u7c7b\u90bb\u5c45&#xff1a;\n<ul>\n<li>E-UTRA ACLR: \u5047\u8bbe\u9694\u58c1\u4e5f\u662f\u4e2a LTE \u4fe1\u53f7\u3002<\/li>\n<li>UTRA ACLR: \u5047\u8bbe\u9694\u58c1\u662f\u4e2a WCDMA (3G) \u4fe1\u53f7\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u6d4b\u8bd5\u6807\u51c6&#xff1a; Table 6.6.2.3.5.1-1\/Table 6.6.2.3.5.2-1 (P1846)\n<ul>\n<li>E-UTRA (LTE \u90bb\u5c45): &gt; 30 dB<\/li>\n<li>UTRA (WCDMA \u90bb\u5c45): &gt; 33 dB (\u901a\u5e38\u8fd9\u4e2a\u66f4\u96be\u8fc7&#xff01;)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>2. \u6838\u5fc3\u63cf\u8ff0<\/h3>\n<p>\u201c\u9891\u8c31\u80a9\u90e8 (Spectral Regrowth)\u201d\u3002 \u7406\u60f3\u7684\u4fe1\u53f7\u9891\u8c31\u5e94\u8be5\u50cf\u4e00\u4e2a\u77e9\u5f62\u201c\u95e8\u201d&#xff0c;\u76f4\u4e0a\u76f4\u4e0b\u3002 \u4f46\u7531\u4e8e PA (\u529f\u653e) \u7684\u975e\u7ebf\u6027\u6548\u5e94&#xff0c;\u5927\u529f\u7387\u53d1\u5c04\u65f6&#xff0c;\u9891\u8c31\u7684\u4e24\u4fa7\u4f1a\u957f\u51fa\u50cf\u201c\u80a9\u8180\u201d\u4e00\u6837\u7684\u88d9\u8fb9\u3002\u8fd9\u4e9b\u591a\u51fa\u6765\u7684\u80fd\u91cf\u5c31\u662f\u6cc4\u6f0f\u3002<\/p>\n<ul>\n<li>\u5b9a\u4e49\u516c\u5f0f&#xff1a; <span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>          A<\/p>\n<p>          C<\/p>\n<p>          L<\/p>\n<p>          R<\/p>\n<p>          &#061;<\/p>\n<p>           P<\/p>\n<p>            A<\/p>\n<p>            s<\/p>\n<p>            s<\/p>\n<p>            i<\/p>\n<p>            g<\/p>\n<p>            n<\/p>\n<p>            e<\/p>\n<p>            d<\/p>\n<p>          (<\/p>\n<p>          \u4e3b\u4fe1\u9053\u529f\u7387<\/p>\n<p>          )<\/p>\n<p>          \u2212<\/p>\n<p>           P<\/p>\n<p>            A<\/p>\n<p>            d<\/p>\n<p>            j<\/p>\n<p>            a<\/p>\n<p>            c<\/p>\n<p>            e<\/p>\n<p>            n<\/p>\n<p>            t<\/p>\n<p>          (<\/p>\n<p>          \u90bb\u4fe1\u9053\u529f\u7387<\/p>\n<p>          )<\/p>\n<p>          ACLR &#061; P_{Assigned}(\u4e3b\u4fe1\u9053\u529f\u7387) &#8211; P_{Adjacent}(\u90bb\u4fe1\u9053\u529f\u7387) <\/p>\n<p>      <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\">A<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0715em\">C<\/span><span class=\"mord mathnormal\">L<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0077em\">R<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0361em;vertical-align: -0.2861em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">P<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3361em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1389em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">A<\/span><span class=\"mord mathnormal mtight\">ss<\/span><span class=\"mord mathnormal mtight\">i<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0359em\">g<\/span><span class=\"mord mathnormal mtight\">n<\/span><span class=\"mord mathnormal mtight\">e<\/span><span class=\"mord mathnormal mtight\">d<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2861em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">(<\/span><span class=\"mord cjk_fallback\">\u4e3b\u4fe1\u9053\u529f\u7387<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u2212<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1.0361em;vertical-align: -0.2861em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">P<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3361em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.1389em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">A<\/span><span class=\"mord mathnormal mtight\">d<\/span><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0572em\">j<\/span><span class=\"mord mathnormal mtight\">a<\/span><span class=\"mord mathnormal mtight\">ce<\/span><span class=\"mord mathnormal mtight\">n<\/span><span class=\"mord mathnormal mtight\">t<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2861em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mopen\">(<\/span><span class=\"mord cjk_fallback\">\u90bb\u4fe1\u9053\u529f\u7387<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span><\/span> (\u6ce8&#xff1a;\u5355\u4f4d\u662f dB&#xff0c;\u610f\u5473\u7740\u5b83\u662f\u4e24\u4e2a\u529f\u7387\u7684\u5dee\u503c\/\u6bd4\u503c)<\/li>\n<\/ul>\n<h3>3. \u6d4b\u8bd5\u76ee\u7684<\/h3>\n<ul>\n<li>\u89e3\u51b3\u201c\u8fdc\u8fd1\u6548\u5e94\u201d&#xff1a; \u5982\u679c\u4f60\u7684 ACLR \u5f88\u5dee&#xff08;\u6cc4\u6f0f\u5927&#xff09;&#xff0c;\u5f53\u4f60\u5728\u5c0f\u533a\u8fb9\u7f18\u5927\u529f\u7387\u53d1\u5c04\u65f6&#xff0c;\u4f60\u7684\u6cc4\u6f0f\u80fd\u91cf\u53ef\u80fd\u4f1a\u6df9\u6ca1\u9694\u58c1\u4fe1\u9053\u5728\u5c0f\u533a\u4e2d\u5fc3\u7684\u4e00\u4e2a\u5f31\u7528\u6237\u7684\u4fe1\u53f7\u3002<\/li>\n<li>\u5171\u5b58&#xff1a; \u4fdd\u8bc1 LTE \u4e0d\u4f1a\u5e72\u6270\u5230\u90bb\u9891\u7684 3G (WCDMA) \u6216\u5176\u4ed6\u8fd0\u8425\u5546\u7684\u9891\u6bb5\u3002<\/li>\n<\/ul>\n<h3>4. \u5e38\u89c1\u95ee\u9898<\/h3>\n<p>ACLR Fail \u662f PA \u8c03\u8bd5\u4e2d\u6700\u5e38\u89c1\u7684\u95ee\u9898\u3002\u770b\u9891\u8c31\u7684\u5f62\u72b6\u80fd\u544a\u8bc9\u4f60\u5f88\u591a\u79d8\u5bc6&#xff1a; \u60c5\u51b5 A&#xff1a;\u5de6\u53f3\u80a9\u8180\u4e00\u6837\u9ad8&#xff0c;\u4e14\u90fd\u5f88\u9ad8 (Symmetric High)<\/p>\n<ul>\n<li>\u7269\u7406\u542b\u4e49&#xff1a; \u7eaf\u7cb9\u7684 AM-AM \u5931\u771f&#xff08;\u5e45\u5ea6\u538b\u7f29&#xff09;\u3002<\/li>\n<li>\u539f\u56e0&#xff1a; PA \u9971\u548c (Saturation)\u3002\u4f60\u628a PA \u63a8\u5230 1dB \u538b\u7f29\u70b9 (P1dB) \u4ee5\u5916\u4e86&#xff0c;\u4fe1\u53f7\u88ab\u524a\u9876 (Clipping)\u3002<\/li>\n<li>\u5bf9\u7b56&#xff1a;\n<ul>\n<li>\u964d\u4f4e\u53d1\u5c04\u529f\u7387&#xff08;\u68c0\u67e5 Calibration \u662f\u5426\u504f\u9ad8&#xff09;\u3002<\/li>\n<li>\u68c0\u67e5 PA \u7684 VCC \u7535\u538b\u662f\u5426\u88ab\u62c9\u4f4e&#xff08;IR Drop&#xff09;\u3002<\/li>\n<li>\u4f18\u5316\u8f93\u51fa\u5339\u914d&#xff08;Load-pull&#xff09;&#xff0c;\u8ba9 PA \u8d1f\u8f7d\u7ebf\u56de\u5230\u7ebf\u6027\u533a\u3002 \u60c5\u51b5 B&#xff1a;\u5de6\u53f3\u80a9\u8180\u4e0d\u4e00\u6837\u9ad8 (Asymmetry)<\/li>\n<\/ul>\n<\/li>\n<li>\u7269\u7406\u542b\u4e49&#xff1a; AM-PM \u5931\u771f \u6216 \u8bb0\u5fc6\u6548\u5e94 (Memory Effect)\u3002<\/li>\n<li>\u539f\u56e0&#xff1a; PA \u4e0d\u4ec5\u5bf9\u5f53\u524d\u7684\u4fe1\u53f7\u5931\u771f&#xff0c;\u8fd8\u8bb0\u5f97\u201c\u4e0a\u4e00\u4e2a\u6beb\u79d2\u201d\u7684\u4fe1\u53f7\u3002\u8fd9\u901a\u5e38\u662f\u7531\u4e8e Bias \u7535\u8def\u6216\u70ed\u6548\u5e94\u5f15\u8d77\u7684\u3002<\/li>\n<li>\u5bf9\u7b56&#xff1a;\n<ul>\n<li>\u67e5 Video Bandwidth (VBW): PA \u7684\u504f\u7f6e\u7535\u8def (V_bias) \u4f9b\u7535\u5fc5\u987b\u80fd\u8ddf\u4e0a\u4fe1\u53f7\u5305\u7edc\u7684\u53d8\u5316\u3002\u68c0\u67e5 Bias \u7ebf\u4e0a\u7684\u5927\u7535\u5bb9\u548c\u7535\u611f\u8c10\u632f\u70b9\u3002<\/li>\n<li>\u67e5\u6563\u70ed&#xff1a; \u53ea\u6709\u4e00\u8fb9\u7fd8\u8d77\u6765&#xff0c;\u6709\u65f6\u5019\u662f\u56e0\u4e3a PA \u8fd8\u6ca1\u70ed\u900f\u6216\u8005\u70ed\u8fc7\u5934\u4e86\u5bfc\u81f4\u7279\u6027\u6f02\u79fb\u3002 \u60c5\u51b5 C&#xff1a;UTRA ACLR (33dB) \u6302\u4e86&#xff0c;\u4f46 E-UTRA (30dB) \u8fc7\u4e86<\/li>\n<\/ul>\n<\/li>\n<li>\u539f\u56e0&#xff1a; \u8fd9\u662f\u5e38\u6001\u3002\u56e0\u4e3a WCDMA \u7684\u6d4b\u91cf\u5e26\u5bbd (3.84MHz) \u6bd4 LTE \u7684\u67d0\u4e9b\u914d\u7f6e\u7a84&#xff0c;\u4e14\u80fd\u91cf\u66f4\u96c6\u4e2d\u3002<\/li>\n<li>\u5bf9\u7b56&#xff1a; \u8fd9\u662f\u4e00\u4e2a\u786c\u6307\u6807&#xff0c;\u901a\u5e38\u53ea\u80fd\u901a\u8fc7\u727a\u7272\u6548\u7387&#xff08;\u52a0\u5927\u504f\u7f6e\u7535\u6d41&#xff09;\u6216\u8005\u964d\u4f4e\u6700\u5927\u529f\u7387 (MPR) \u6765\u6362\u53d6\u3002<\/li>\n<\/ul>\n<h3>5. ACLR \u4e0e MPR (Level 1 \u7684\u56de\u54cd)<\/h3>\n<p>\u8fd8\u8bb0\u5f97\u6211\u4eec\u5728 Level 1 Max Power \u91cc\u63d0\u5230\u7684 MPR (Maximum Power Reduction) \u5417&#xff1f; \u73b0\u5728\u95ed\u73af\u4e86&#xff1a;<\/p>\n<ul>\n<li>\u4e3a\u4ec0\u4e48\u8981\u5141\u8bb8 MPR (\u529f\u7387\u56de\u9000)&#xff1f;\n<ul>\n<li>\u5c31\u662f\u4e3a\u4e86\u6551 ACLR&#xff01;<\/li>\n<\/ul>\n<\/li>\n<li>\u903b\u8f91\u94fe\u6761&#xff1a;\n<ul>\n<li>\u5f53\u4f60\u662f Full RB (\u5982 20M 100RB) \u65f6&#xff0c;PAPR (\u5cf0\u5747\u6bd4) \u5f88\u9ad8&#xff0c;\u5bb9\u6613\u628a PA \u63a8\u9971\u548c&#xff0c;\u5bfc\u81f4 ACLR \u53d8\u5dee\u3002<\/li>\n<li>\u6b64\u65f6&#xff0c;\u4e3a\u4e86\u4fdd\u4f4f ACLR \u4e0d\u6302 (Pass 30dB\/33dB)&#xff0c;3GPP \u5141\u8bb8 \u4f60\u628a\u6700\u5927\u529f\u7387\u4ece 23dBm \u964d\u4f4e\u5230 22dBm (MPR&#061;1) \u751a\u81f3\u66f4\u4f4e\u3002<\/li>\n<li>\u727a\u7272\u529f\u7387&#xff0c;\u6362\u53d6\u7ebf\u6027\u5ea6\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u603b\u7ed3&#xff1a;\u5c04\u9891\u53d1\u5c04\u673a\u6307\u6807\u5168\u666f\u56fe (Tx Hierarchy)<\/h2>\n<p>\u606d\u559c\u4f60&#xff01;\u5230\u73b0\u5728\u4e3a\u6b62&#xff0c;\u4f60\u5df2\u7ecf\u5efa\u7acb\u4e86\u4e00\u4e2a\u5b8c\u6574\u7684\u5c04\u9891\u53d1\u5c04\u673a (Tx) \u77e5\u8bc6\u4f53\u7cfb\u3002\u6211\u4eec\u6765\u590d\u76d8\u4e00\u4e0b\u5b83\u4eec\u7684\u5173\u7cfb&#xff1a;<\/p>\n<ul>\n<li>Freq Error: \u9891\u7387\u51c6\u4e0d\u51c6&#xff1f;&#xff08;\u6a2a\u5411\u504f\u79fb&#xff09;<\/li>\n<li>Carrier Leakage: \u539f\u70b9\u51c6\u4e0d\u51c6&#xff1f;&#xff08;\u4e2d\u5fc3\u504f\u79fb&#xff09;<\/li>\n<li>EVM: \u6bcf\u4e2a\u70b9\u51c6\u4e0d\u51c6&#xff1f;&#xff08;\u968f\u673a\/\u975e\u7ebf\u6027\u8bef\u5dee&#xff09;<\/li>\n<li>In-band Emission: \u7a0d\u5fae\u8fdc\u4e00\u70b9\u7684\u6742\u6563\u5927\u4e0d\u5927&#xff1f;&#xff08;\u81ea\u8eab\u5e72\u6270&#xff09;<\/li>\n<li>ACLR: \u9694\u58c1\u90bb\u5c45\u53d7\u6ca1\u53d7\u5f71\u54cd&#xff1f;&#xff08;\u90bb\u9053\u5e72\u6270&#xff09;<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f55\u603b\u89c8\u4e00\u3001Frequency Error (\u9891\u7387\u8bef\u5dee)1. \u6587\u6863\u7d22\u5f152. \u6838\u5fc3\u63cf\u8ff03. \u6d4b\u8bd5\u76ee\u76844. \u5e38\u89c1\u95ee\u9898\u4e8c\u3001EVM (Error Vector Magnitude, \u8bef\u5dee\u77e2\u91cf\u5e45\u5ea6)1. \u6587\u6863\u7d22\u5f152. \u6838\u5fc3\u63cf\u8ff03. \u6d4b\u8bd5\u76ee\u76844. \u5e38\u89c1\u95ee\u9898\u4e09\u3001In-band Emissions (\u5e26\u5185\u6742\u6563 \/ \u9891\u8c31\u53d1\u5c04\u6a21\u677f)1. \u6587\u6863\u7d22\u5f152. \u6838\u5fc3\u63cf\u8ff03. \u6d4b\u8bd5\u76ee\u76844. \u5e38\u89c1\u95ee\u9898Carrier Leakage \/ Origin Offset (\u8f7d\u6ce2\u6cc4\u6f0f \/ \u539f\u70b9\u504f\u79fb)1. \u6587\u6863\u7d22\u5f152<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9517],"topic":[],"class_list":["post-123788","post","type-post","status-publish","format-standard","hentry","category-server","tag-9517"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>LTE 3GPP\u6307\u6807(2) - \u8c03\u5236\u8d28\u91cf &amp; 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