{"id":79333,"date":"2026-03-01T19:33:35","date_gmt":"2026-03-01T11:33:35","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/79333.html"},"modified":"2026-03-01T19:33:35","modified_gmt":"2026-03-01T11:33:35","slug":"matlab%e5%ae%9e%e6%88%98%ef%bc%9a5%e5%88%86%e9%92%9f%e6%90%9e%e5%ae%9a%e7%a0%81%e9%97%b4%e4%b8%b2%e6%89%b0%e7%9c%bc%e5%9b%be%e5%af%b9%e6%af%94%e5%ae%9e%e9%aa%8c%ef%bc%88%e9%99%84%e5%ae%8c%e6%95%b4","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/79333.html","title":{"rendered":"MATLAB\u5b9e\u6218\uff1a5\u5206\u949f\u641e\u5b9a\u7801\u95f4\u4e32\u6270\u773c\u56fe\u5bf9\u6bd4\u5b9e\u9a8c\uff08\u9644\u5b8c\u6574\u4ee3\u7801\uff09"},"content":{"rendered":"<h2>MATLAB\u5b9e\u6218&#xff1a;5\u5206\u949f\u641e\u5b9a\u7801\u95f4\u4e32\u6270\u773c\u56fe\u5bf9\u6bd4\u5b9e\u9a8c&#xff08;\u9644\u5b8c\u6574\u4ee3\u7801&#xff09;<\/h2>\n<p>\u773c\u56fe&#xff0c;\u8fd9\u4e2a\u542c\u8d77\u6765\u6709\u4e9b\u62bd\u8c61\u7684\u672f\u8bed&#xff0c;\u5374\u662f\u901a\u4fe1\u5de5\u7a0b\u5e08\u548c\u4fe1\u53f7\u5904\u7406\u7814\u7a76\u8005\u5de5\u5177\u7bb1\u91cc\u6700\u76f4\u89c2\u7684\u201c\u8bca\u65ad\u4eea\u201d\u3002\u60f3\u8c61\u4e00\u4e0b&#xff0c;\u4f60\u6b63\u5728\u8c03\u8bd5\u4e00\u4e2a\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u7cfb\u7edf&#xff0c;\u63a5\u6536\u5230\u7684\u4fe1\u53f7\u6ce2\u5f62\u770b\u8d77\u6765\u6709\u4e9b\u201c\u6a21\u7cca\u201d&#xff0c;\u8bef\u7801\u7387\u5c45\u9ad8\u4e0d\u4e0b\u3002\u6b64\u65f6&#xff0c;\u4e0e\u5176\u5728\u6210\u5806\u7684\u516c\u5f0f\u548c\u9891\u8c31\u56fe\u4e2d\u82e6\u82e6\u5bfb\u89c5&#xff0c;\u4e0d\u5982\u76f4\u63a5\u770b\u4e00\u773c\u773c\u56fe\u2014\u2014\u5b83\u5c31\u50cf\u4fe1\u53f7\u7684\u201c\u5fc3\u7535\u56fe\u201d&#xff0c;\u80fd\u77ac\u95f4\u544a\u8bc9\u4f60\u4fe1\u9053\u5065\u5eb7\u72b6\u51b5\u3001\u5b9a\u65f6\u8bef\u5dee&#xff0c;\u4ee5\u53ca\u90a3\u4e2a\u4ee4\u4eba\u5934\u75bc\u7684\u201c\u5e7d\u7075\u201d&#xff1a;\u7801\u95f4\u4e32\u6270\u3002<\/p>\n<p>\u5bf9\u4e8e\u8bb8\u591a\u521a\u63a5\u89e6\u901a\u4fe1\u7cfb\u7edf\u4eff\u771f\u7684\u5b66\u751f\u548c\u5de5\u7a0b\u5e08\u6765\u8bf4&#xff0c;\u7406\u8bba\u4e0a\u7684\u7406\u89e3\u662f\u4e00\u56de\u4e8b&#xff0c;\u4eb2\u624b\u5728MATLAB\u4e2d\u590d\u73b0\u5e76\u4eb2\u773c\u770b\u5230\u7801\u95f4\u4e32\u6270\u7684\u5f71\u54cd&#xff0c;\u5219\u662f\u53e6\u4e00\u56de\u4e8b\u3002\u7f51\u7edc\u4e0a\u4e0d\u4e4f\u590d\u6742\u7684\u7cfb\u7edf\u7ea7\u4eff\u771f\u6a21\u578b&#xff0c;\u52a8\u8f84\u6570\u767e\u884c\u4ee3\u7801&#xff0c;\u8ba9\u521d\u5b66\u8005\u671b\u800c\u5374\u6b65\u3002\u4eca\u5929&#xff0c;\u6211\u4eec\u5c31\u6765\u70b9\u4e0d\u4e00\u6837\u7684&#xff1a;\u629b\u5f00\u7e41\u590d\u7684\u7406\u8bba\u63a8\u5bfc&#xff0c;\u805a\u7126\u4e8e\u6700\u6838\u5fc3\u7684\u5b9e\u8df5\u3002\u6211\u5c06\u5e26\u4f60\u7528\u4e0d\u5230\u4e94\u5206\u949f\u7684\u65f6\u95f4&#xff0c;\u4ece\u96f6\u5f00\u59cb&#xff0c;\u5199\u51fa\u4e00\u6bb5\u7b80\u6d01\u9ad8\u6548\u7684MATLAB\u4ee3\u7801&#xff0c;\u751f\u6210\u5e76\u5bf9\u6bd4\u6709\u65e0\u7801\u95f4\u4e32\u6270\u4e0b\u7684\u773c\u56fe\u3002\u4f60\u4f1a\u53d1\u73b0&#xff0c;\u7406\u89e3\u4e00\u4e2a\u5173\u952e\u6982\u5ff5&#xff0c;\u6709\u65f6\u53ea\u9700\u8981\u51e0\u884c\u6e05\u6670\u7684\u4ee3\u7801\u548c\u4e00\u4e2a\u76f4\u89c2\u7684\u89c6\u89c9\u7ed3\u679c\u3002<\/p>\n<h3>1. \u5b9e\u9a8c\u51c6\u5907&#xff1a;\u7406\u89e3\u6838\u5fc3\u6982\u5ff5\u4e0eMATLAB\u5de5\u5177\u7bb1<\/h3>\n<p>\u5728\u52a8\u624b\u6572\u4ee3\u7801\u4e4b\u524d&#xff0c;\u6211\u4eec\u9700\u8981\u5feb\u901f\u5398\u6e05\u51e0\u4e2a\u6838\u5fc3\u6982\u5ff5&#xff0c;\u5e76\u786e\u4fdd\u4f60\u7684MATLAB\u73af\u5883\u5df2\u7ecf\u5c31\u7eea\u3002\u8fd9\u80fd\u4fdd\u8bc1\u6211\u4eec\u7684\u201c\u4e94\u5206\u949f\u5b9e\u9a8c\u201d\u987a\u5229\u8fdb\u884c&#xff0c;\u800c\u4e0d\u662f\u5361\u5728\u73af\u5883\u914d\u7f6e\u4e0a\u3002<\/p>\n<p>\u7801\u95f4\u4e32\u6270&#xff0c;\u7b80\u79f0\u4e3aISI&#xff0c;\u662f\u6570\u5b57\u901a\u4fe1\u4e2d\u4e00\u4e2a\u7ecf\u5178\u4e14\u68d8\u624b\u7684\u95ee\u9898\u3002\u4f60\u53ef\u4ee5\u628a\u5b83\u60f3\u8c61\u6210\u5728\u5608\u6742\u7684\u623f\u95f4\u91cc\u540c\u65f6\u8fdb\u884c\u591a\u573a\u5bf9\u8bdd&#xff0c;\u58f0\u97f3\u5f7c\u6b64\u91cd\u53e0\u3001\u5e72\u6270&#xff0c;\u5bfc\u81f4\u4f60\u542c\u4e0d\u6e05\u4efb\u4f55\u4e00\u573a\u5bf9\u8bdd\u7684\u5b8c\u6574\u5185\u5bb9\u3002\u5728\u4fe1\u53f7\u4f20\u8f93\u4e2d&#xff0c;\u7531\u4e8e\u4fe1\u9053\u5e26\u5bbd\u6709\u9650\u6216\u5b58\u5728\u591a\u5f84\u6548\u5e94&#xff08;\u4fe1\u53f7\u901a\u8fc7\u4e0d\u540c\u8def\u5f84\u5230\u8fbe\u63a5\u6536\u7aef&#xff09;&#xff0c;\u4e00\u4e2a\u7b26\u53f7\u7684\u6ce2\u5f62\u4f1a\u201c\u62d6\u5c3e\u201d\u5e76\u8513\u5ef6\u5230\u76f8\u90bb\u7b26\u53f7\u7684\u65f6\u95f4\u6bb5\u5185&#xff0c;\u4ece\u800c\u5e72\u6270\u4e86\u5bf9\u540e\u7eed\u7b26\u53f7\u7684\u6b63\u786e\u5224\u51b3\u3002\u8fd9\u79cd\u5e72\u6270\u76f4\u63a5\u5bfc\u81f4\u8bef\u7801\u7387\u4e0a\u5347\u3002<\/p>\n<p>\u800c\u773c\u56fe&#xff0c;\u5219\u662f\u8bc4\u4f30\u8fd9\u79cd\u5e72\u6270\u7684\u7edd\u4f73\u5de5\u5177\u3002\u5b83\u5e76\u975e\u7ed8\u5236\u4e00\u53ea\u773c\u775b&#xff0c;\u800c\u662f\u5c06\u4e00\u6bb5\u957f\u65f6\u95f4\u7684\u6570\u5b57\u4fe1\u53f7\u6ce2\u5f62&#xff0c;\u6309\u7b26\u53f7\u5468\u671f\u5206\u6bb5&#xff0c;\u5e76\u5168\u90e8\u91cd\u53e0\u663e\u793a\u5728\u4e00\u4e2a\u6216\u4e24\u4e2a\u5468\u671f\u7684\u65f6\u95f4\u7a97\u53e3\u5185\u3002\u5f62\u6210\u7684\u56fe\u5f62\u4e2d&#xff0c;\u4e2d\u95f4\u7684\u7a7a\u767d\u533a\u57df\u5f62\u4f3c\u773c\u775b&#xff0c;\u5176\u201c\u5f20\u5f00\u201d\u7684\u7a0b\u5ea6\u76f4\u89c2\u53cd\u6620\u4e86\u4fe1\u53f7\u7684\u8d28\u91cf&#xff1a;<\/p>\n<ul>\n<li>\u773c\u775b\u5f20\u5f00\u5ea6\u5927&#xff1a;\u4fe1\u53f7\u6e05\u6670&#xff0c;\u566a\u58f0\u548c\u4e32\u6270\u5c0f&#xff0c;\u5224\u51b3\u65f6\u673a\u7075\u6d3b\u3002<\/li>\n<li>\u773c\u775b\u95ed\u5408\u751a\u81f3\u5b8c\u5168\u6d88\u5931&#xff1a;\u4fe1\u53f7\u8d28\u91cf\u5dee&#xff0c;\u5b58\u5728\u4e25\u91cd\u7684\u566a\u58f0\u6216\u7801\u95f4\u4e32\u6270&#xff0c;\u6781\u6613\u53d1\u751f\u8bef\u5224\u3002<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u672c\u6b21\u5b9e\u9a8c&#xff0c;\u4f60\u53ea\u9700\u8981\u57fa\u7840\u7248\u7684MATLAB&#xff0c;\u5e76\u786e\u4fddCommunications Toolbox\u6216DSP System Toolbox\u5df2\u5b89\u88c5&#xff0c;\u56e0\u4e3a\u6211\u4eec\u5c06\u7528\u5230\u5176\u4e2d\u7684eyediagram\u51fd\u6570\u3002\u68c0\u67e5\u65b9\u6cd5\u5f88\u7b80\u5355&#xff0c;\u5728\u547d\u4ee4\u7a97\u53e3\u8f93\u5165 ver&#xff0c;\u5728\u663e\u793a\u7684\u5217\u8868\u91cc\u67e5\u627e\u5373\u53ef\u3002<\/p>\n<p>\u6ce8\u610f&#xff1a;\u5982\u679c\u4f60\u5728\u5b66\u672f\u673a\u6784&#xff0c;\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u5b66\u6821\u8bb8\u53ef\u83b7\u53d6\u8fd9\u4e9b\u5de5\u5177\u7bb1\u3002\u4e2a\u4eba\u7528\u6237\u4e5f\u53ef\u4ee5\u9009\u62e9MATLAB Home\u7248\u672c&#xff0c;\u5b83\u901a\u5e38\u5305\u542b\u5e38\u7528\u7684\u5de5\u5177\u7bb1\u3002<\/p>\n<h3>2. \u4e94\u5206\u949f\u6838\u5fc3\u4ee3\u7801\u5b9e\u73b0\u4e0e\u9010\u884c\u89e3\u6790<\/h3>\n<p>\u4e0b\u9762\u5c31\u662f\u672c\u6b21\u5b9e\u9a8c\u7684\u6838\u5fc3\u4ee3\u7801\u5757\u3002\u6211\u4eec\u5c06\u5b83\u5206\u89e3\u4e3a\u51e0\u4e2a\u903b\u8f91\u6e05\u6670\u7684\u6b65\u9aa4&#xff0c;\u5e76\u9010\u884c\u89e3\u91ca\u5176\u4f5c\u7528\u3002\u4f60\u53ef\u4ee5\u76f4\u63a5\u590d\u5236\u5230MATLAB\u7684\u811a\u672c\u7f16\u8f91\u5668&#xff08;.m\u6587\u4ef6&#xff09;\u4e2d\u8fd0\u884c\u3002<\/p>\n<p>%% 1. \u751f\u6210\u968f\u673a\u4e8c\u8fdb\u5236\u6570\u636e\u5e8f\u5217<br \/>\nN &#061; 1000;                    % \u53d1\u90011000\u4e2a\u6bd4\u7279&#xff0c;\u6570\u636e\u91cf\u8db3\u591f\u5f62\u6210\u6e05\u6670\u773c\u56fe<br \/>\ndataBits &#061; randi([0, 1], N, 1); % \u751f\u6210\u4e00\u4e2aN\u884c1\u5217\u7684\u5217\u5411\u91cf&#xff0c;\u5143\u7d20\u4e3a\u968f\u673a\u76840\u62161<\/p>\n<p>%% 2. \u5c06\u6bd4\u7279\u6620\u5c04\u4e3a\u53cc\u6781\u6027\u975e\u5f52\u96f6\u7801<br \/>\n% \u5728\u57fa\u5e26\u4eff\u771f\u4e2d&#xff0c;\u5e38\u7528&#043;1\u4ee3\u8868\u6bd4\u7279\u20181\u2019&#xff0c;-1\u4ee3\u8868\u6bd4\u7279\u20180\u2019&#xff0c;\u8fd9\u79cd\u683c\u5f0f\u4fbf\u4e8e\u540e\u7eed\u5904\u7406<br \/>\ntxSignal &#061; 2 * dataBits &#8211; 1; % \u6620\u5c04&#xff1a;0 -&gt; -1, 1 -&gt; &#043;1<\/p>\n<p>%% 3. \u8bbe\u7f6e\u5173\u952e\u4eff\u771f\u53c2\u6570<br \/>\nfs &#061; 16;                     % \u6bcf\u4e2a\u7b26\u53f7\u7684\u91c7\u6837\u70b9\u6570&#xff0c;\u51b3\u5b9a\u4e86\u6ce2\u5f62\u7684\u5e73\u6ed1\u5ea6<br \/>\nTs &#061; 1;                      % \u7b26\u53f7\u5468\u671f&#xff0c;\u5f52\u4e00\u5316\u4e3a1&#xff0c;\u65b9\u4fbf\u8ba1\u7b97<br \/>\nt &#061; (0:1\/fs:N*Ts &#8211; 1\/fs)&#039;;   % \u751f\u6210\u5bf9\u5e94\u7684\u65f6\u95f4\u8f74\u5411\u91cf&#xff0c;\u603b\u65f6\u957f&#061;N\u4e2a\u7b26\u53f7\u5468\u671f<\/p>\n<p>%% 4. \u751f\u6210\u65e0\u7801\u95f4\u4e32\u6270\u7684\u7406\u60f3\u4fe1\u53f7<br \/>\n% \u5c06\u6bcf\u4e2a\u7b26\u53f7\u7684\u503c&#xff0c;\u91cd\u590dfs\u6b21&#xff0c;\u4ee5\u6a21\u62df\u5728\u91c7\u6837\u7387fs\u4e0b\u7684\u6ce2\u5f62<br \/>\nidealWaveform &#061; repelem(txSignal, fs); % repelem\u51fd\u6570\u6bd4repmat&#043;reshape\u7ec4\u5408\u66f4\u76f4\u89c2\u9ad8\u6548<\/p>\n<p>%% 5. \u6a21\u62df\u4e00\u4e2a\u7b80\u5355\u7684\u7801\u95f4\u4e32\u6270\u4fe1\u9053<br \/>\n% \u5b9a\u4e49\u4e00\u4e2a\u4fe1\u9053\u8109\u51b2\u54cd\u5e94&#xff0c;\u6a21\u62df\u4fe1\u53f7\u7ecf\u8fc7\u5e26\u5bbd\u53d7\u9650\u4fe1\u9053\u540e\u7684\u62d6\u5c3e\u6548\u5e94<br \/>\nchannelIR &#061; [0.8, 0.4, 0.2, 0.1]&#039;; % \u4e3b\u5f84\u7cfb\u6570\u4e3a0.8&#xff0c;\u540e\u7eed\u62d6\u5c3e\u7cfb\u6570\u9012\u51cf<br \/>\n% \u4f7f\u7528filter\u51fd\u6570\u8ba9\u7406\u60f3\u4fe1\u53f7\u901a\u8fc7\u8fd9\u4e2a\u4fe1\u9053&#xff0c;\u5377\u79ef\u8fc7\u7a0b\u5373\u5f15\u5165ISI<br \/>\nisiWaveform &#061; filter(channelIR, 1, idealWaveform);<\/p>\n<p>%% 6. \u7ed8\u5236\u5e76\u5bf9\u6bd4\u773c\u56fe<br \/>\nfigure(&#039;Position&#039;, [100, 100, 1200, 500]); % \u521b\u5efa\u4e00\u4e2a\u5bbd\u5e45\u56fe\u5f62\u7a97\u53e3<\/p>\n<p>% \u5b50\u56fe1&#xff1a;\u65e0ISI\u7684\u773c\u56fe<br \/>\nsubplot(1, 2, 1);<br \/>\neyediagram(idealWaveform, 2*fs, 2, fs); % \u5173\u952e\u51fd\u6570&#xff1a;\u7ed8\u5236\u773c\u56fe<br \/>\ntitle(&#039;\u65e0\u7801\u95f4\u4e32\u6270\u7684\u773c\u56fe&#039;, &#039;FontSize&#039;, 12, &#039;FontWeight&#039;, &#039;bold&#039;);<br \/>\nxlabel(&#039;\u65f6\u95f4 (\u7b26\u53f7\u5468\u671f)&#039;); ylabel(&#039;\u5e45\u5ea6&#039;);<\/p>\n<p>% \u5b50\u56fe2&#xff1a;\u6709ISI\u7684\u773c\u56fe<br \/>\nsubplot(1, 2, 2);<br \/>\neyediagram(isiWaveform, 2*fs, 2, fs);<br \/>\ntitle(&#039;\u5b58\u5728\u7801\u95f4\u4e32\u6270\u7684\u773c\u56fe&#039;, &#039;FontSize&#039;, 12, &#039;FontWeight&#039;, &#039;bold&#039;);<br \/>\nxlabel(&#039;\u65f6\u95f4 (\u7b26\u53f7\u5468\u671f)&#039;); ylabel(&#039;\u5e45\u5ea6&#039;);<\/p>\n<p>\u8fd0\u884c\u8fd9\u6bb5\u4ee3\u7801&#xff0c;\u4f60\u5c06\u7acb\u5373\u5f97\u5230\u5e76\u6392\u5bf9\u6bd4\u7684\u4e24\u5f20\u773c\u56fe\u3002\u73b0\u5728&#xff0c;\u8ba9\u6211\u4eec\u6df1\u5165\u770b\u770b\u51e0\u4e2a\u5173\u952e\u70b9&#xff1a;<\/p>\n<ul>\n<li>repelem vs repmat&#xff1a;\u5728\u751f\u6210\u7406\u60f3\u6ce2\u5f62\u65f6&#xff0c;\u6211\u9009\u62e9\u4e86repelem\u51fd\u6570\u3002\u5b83\u6bd4\u4f20\u7edf\u7684repmat\u540e\u63a5reshape\u6216(:)\u64cd\u4f5c\u66f4\u8bed\u4e49\u5316&#xff0c;\u76f4\u63a5\u8868\u8fbe\u4e86\u201c\u5c06\u6bcf\u4e2a\u5143\u7d20\u91cd\u590dfs\u6b21\u201d\u8fd9\u4e00\u64cd\u4f5c&#xff0c;\u4ee3\u7801\u53ef\u8bfb\u6027\u66f4\u5f3a\u3002<\/li>\n<li>filter(h, 1, x)\u51fd\u6570&#xff1a;\u8fd9\u662f\u6a21\u62df\u7ebf\u6027\u65f6\u4e0d\u53d8\u7cfb\u7edf\u7684\u6838\u5fc3\u3002h\u662f\u6211\u4eec\u7684\u4fe1\u9053\u6a21\u578b&#xff0c;1\u8868\u793a\u7cfb\u7edf\u51fd\u6570\u7684\u5206\u5b50&#xff08;\u8fd9\u662f\u4e00\u4e2aFIR\u6ee4\u6ce2\u5668&#xff09;\u3002\u8fd9\u884c\u4ee3\u7801\u7b49\u6548\u4e8e\u8ba1\u7b97conv(h, x)\u7684\u5377\u79ef&#xff0c;\u4f46filter\u5728\u5904\u7406\u957f\u6570\u636e\u65f6\u901a\u5e38\u66f4\u9ad8\u6548\u3002<\/li>\n<li>eyediagram\u51fd\u6570\u53c2\u6570&#xff1a;\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u53c2\u6570&#xff1a;\u5f85\u5206\u6790\u7684\u4fe1\u53f7\u5411\u91cf\u3002<\/li>\n<li>\u7b2c\u4e8c\u4e2a\u53c2\u6570&#xff1a;2*fs&#xff0c;\u8868\u793a\u773c\u56fe\u6c34\u5e73\u8f74\u663e\u793a2\u4e2a\u7b26\u53f7\u5468\u671f\u7684\u957f\u5ea6&#xff0c;\u8fd9\u662f\u89c2\u5bdf\u773c\u56fe\u5f20\u5408\u7684\u6807\u51c6\u7a97\u53e3\u3002<\/li>\n<li>\u7b2c\u4e09\u4e2a\u53c2\u6570&#xff1a;2&#xff0c;\u8868\u793a\u6bcf\u4e2a\u8f68\u8ff9&#xff08;\u5373\u6bcf\u6b21\u53e0\u52a0\u7684\u6ce2\u5f62\u6bb5&#xff09;\u5305\u542b2\u4e2a\u7b26\u53f7\u3002\u901a\u5e38\u8bbe\u7f6e\u4e3a2\u5373\u53ef\u6e05\u6670\u663e\u793a\u3002<\/li>\n<li>\u7b2c\u56db\u4e2a\u53c2\u6570&#xff1a;fs&#xff0c;\u6bcf\u4e2a\u7b26\u53f7\u7684\u91c7\u6837\u70b9\u6570&#xff0c;\u5fc5\u987b\u4e0e\u751f\u6210\u4fe1\u53f7\u65f6\u7684\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>3. \u53c2\u6570\u201c\u9b54\u65b9\u201d&#xff1a;\u5982\u4f55\u901a\u8fc7\u8c03\u6574\u83b7\u5f97\u4e0d\u540c\u5b9e\u9a8c\u73b0\u8c61<\/h3>\n<p>\u4e00\u5957\u56fa\u5b9a\u7684\u4ee3\u7801\u53ea\u80fd\u5c55\u793a\u4e00\u79cd\u60c5\u51b5\u3002\u771f\u6b63\u7684\u5b9e\u9a8c\u7cbe\u795e\u5728\u4e8e\u6539\u53d8\u53c2\u6570&#xff0c;\u89c2\u5bdf\u7cfb\u7edf\u884c\u4e3a\u7684\u53d8\u5316\u3002\u4e0b\u9762\u8fd9\u4e2a\u8868\u683c\u603b\u7ed3\u4e86\u4f60\u5e94\u8be5\u5c1d\u8bd5\u8c03\u6574\u7684\u51e0\u4e2a\u5173\u952e\u53c2\u6570\u53ca\u5176\u9884\u671f\u5f71\u54cd&#xff1a;<\/p>\n<table>\n<tr>\u53c2\u6570\u4ee3\u7801\u4e2d\u7684\u53d8\u91cf\u5efa\u8bae\u8c03\u6574\u8303\u56f4\u5bf9\u773c\u56fe\u7684\u5f71\u54cd<\/tr>\n<tbody>\n<tr>\n<td style=\"text-align:left\">\u4fe1\u9053\u8109\u51b2\u54cd\u5e94<\/td>\n<td style=\"text-align:left\">channelIR<\/td>\n<td style=\"text-align:left\">[1, 0], [0.9, 0.5], [0.7, 0.5, 0.3]<\/td>\n<td style=\"text-align:left\">\u76f4\u63a5\u5f71\u54cdISI\u4e25\u91cd\u7a0b\u5ea6\u3002\u62d6\u5c3e\u8d8a\u957f\u3001\u7cfb\u6570\u8d8a\u5927&#xff0c;\u773c\u56fe\u95ed\u5408\u8d8a\u4e25\u91cd\u3002\u5c1d\u8bd5[1, 0]&#xff08;\u65e0ISI&#xff09;\u548c[0.5, 0.5]&#xff08;\u4e25\u91cdISI&#xff09;\u5bf9\u6bd4\u3002<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left\">\u6bcf\u7b26\u53f7\u91c7\u6837\u6570<\/td>\n<td style=\"text-align:left\">fs<\/td>\n<td style=\"text-align:left\">4, 8, 16, 32<\/td>\n<td style=\"text-align:left\">\u5f71\u54cd\u773c\u56fe\u6ce2\u5f62\u7684\u5e73\u6ed1\u5ea6\u3002fs\u8fc7\u4f4e&#xff08;\u59824&#xff09;\u4f1a\u4f7f\u773c\u56fe\u5448\u9636\u68af\u72b6&#xff0c;\u4e0d\u771f\u5b9e&#xff1b;fs\u8fc7\u9ad8\u4f1a\u589e\u52a0\u8ba1\u7b97\u91cf&#xff0c;\u4f46\u6ce2\u5f62\u5e73\u6ed1\u3002<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left\">\u6570\u636e\u957f\u5ea6<\/td>\n<td style=\"text-align:left\">N<\/td>\n<td style=\"text-align:left\">100, 1000, 10000<\/td>\n<td style=\"text-align:left\">\u5f71\u54cd\u773c\u56fe\u7684\u6e05\u6670\u5ea6\u548c\u7a33\u5b9a\u5ea6\u3002\u6570\u636e\u592a\u77ed&#xff08;\u5982100&#xff09;&#xff0c;\u773c\u56fe\u8f68\u8ff9\u7a00\u758f&#xff0c;\u96be\u4ee5\u89c2\u5bdf&#xff1b;\u6570\u636e\u957f\u5219\u773c\u56fe\u5bc6\u96c6&#xff0c;\u5f62\u6001\u7a33\u5b9a\u3002<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align:left\">\u773c\u56fe\u663e\u793a\u7b26\u53f7\u6570<\/td>\n<td style=\"text-align:left\">eyediagram(&#8230;, 2*fs, **n**, fs)\u4e2d\u7684n<\/td>\n<td style=\"text-align:left\">1, 2, 4<\/td>\n<td style=\"text-align:left\">\u6539\u53d8\u6c34\u5e73\u8f74\u663e\u793a\u7684\u7b26\u53f7\u5468\u671f\u6570\u3002n&#061;2\u662f\u6807\u51c6\u89c6\u56fe&#xff1b;n&#061;1\u53ea\u663e\u793a\u4e00\u4e2a\u5468\u671f&#xff0c;\u53ef\u80fd\u770b\u4e0d\u5230\u5b8c\u6574\u7684\u201c\u773c\u775b\u201d&#xff1b;n&#061;4\u80fd\u770b\u5230\u66f4\u591a\u5386\u53f2\u5e72\u6270\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u52a8\u624b\u8bd5\u4e00\u8bd5&#xff1a;\u5c06\u4ee3\u7801\u4e2d\u7684channelIR\u6539\u4e3a [0.6, 0.6]&#xff0c;\u518d\u8fd0\u884c\u4e00\u6b21\u3002\u4f60\u4f1a\u53d1\u73b0\u773c\u56fe\u51e0\u4e4e\u5b8c\u5168\u95ed\u5408&#xff0c;\u8fd9\u6a21\u62df\u4e86\u4e00\u4e2a\u975e\u5e38\u6076\u52a3\u7684\u4fe1\u9053\u6761\u4ef6\u3002\u63a5\u7740&#xff0c;\u5c1d\u8bd5\u5c06fs\u4ece16\u964d\u52304&#xff0c;\u89c2\u5bdf\u773c\u56fe\u4ece\u5e73\u6ed1\u66f2\u7ebf\u53d8\u4e3a\u660e\u663e\u7684\u9636\u68af\u5f62\u72b6&#xff0c;\u8fd9\u8bf4\u660e\u4e86\u91c7\u6837\u7387\u5bf9\u6570\u5b57\u6ce2\u5f62\u91cd\u5efa\u7684\u91cd\u8981\u6027\u3002<\/p>\n<p>\u63d0\u793a&#xff1a;\u5728\u8c03\u8bd5\u65f6&#xff0c;\u53ef\u4ee5\u5355\u72ec\u7ed8\u5236idealWaveform\u548cisiWaveform\u7684\u524d100\u4e2a\u91c7\u6837\u70b9&#xff0c;\u76f4\u89c2\u611f\u53d7\u4fe1\u53f7\u6ce2\u5f62\u662f\u5982\u4f55\u88ab\u4fe1\u9053\u201c\u626d\u66f2\u201d\u7684\u3002\u4f7f\u7528 plot(t(1:100), idealWaveform(1:100), \u2018b-\u2018, t(1:100), isiWaveform(1:100), \u2018r\u2013\u2018) \u5373\u53ef\u3002<\/p>\n<h3>4. \u4ece\u73b0\u8c61\u5230\u672c\u8d28&#xff1a;\u6df1\u5165\u5206\u6790\u4e0e\u5e38\u89c1\u95ee\u9898\u6392\u67e5<\/h3>\n<p>\u770b\u5230\u773c\u56fe\u5f20\u5f00\u4e0e\u95ed\u5408\u7684\u5dee\u5f02\u53ea\u662f\u7b2c\u4e00\u6b65\u3002\u4f5c\u4e3a\u4e00\u4e2a\u4e25\u8c28\u7684\u5b9e\u8df5\u8005&#xff0c;\u6211\u4eec\u9700\u8981\u8ffd\u95ee&#xff1a;\u8fd9\u80cc\u540e\u5230\u5e95\u53d1\u751f\u4e86\u4ec0\u4e48&#xff1f;\u5982\u4f55\u91cf\u5316\u8fd9\u79cd\u5dee\u5f02&#xff1f;\u4ee5\u53ca\u5728\u5b9e\u9a8c\u4e2d\u9047\u5230\u95ee\u9898\u8be5\u5982\u4f55\u89e3\u51b3&#xff1f;<\/p>\n<p>\u773c\u56fe\u80cc\u540e\u7684\u4fe1\u53f7\u5904\u7406\u539f\u7406&#xff1a;<br \/>\n\u5f53\u6211\u4eec\u4f7f\u7528filter(channelIR, 1, idealWaveform)\u65f6&#xff0c;MATLAB\u6267\u884c\u7684\u662f\u79bb\u6563\u65f6\u95f4\u5377\u79ef\u3002\u5bf9\u4e8e\u4fe1\u9053\u54cd\u5e94h &#061; [h0, h1, h2, \u2026]&#xff0c;\u8f93\u51fa\u4fe1\u53f7\u7684\u6bcf\u4e00\u4e2a\u70b9\u90fd\u662f\u8f93\u5165\u4fe1\u53f7\u4e00\u6bb5\u5386\u53f2\u7684\u52a0\u6743\u548c\u3002\u4f8b\u5982&#xff0c;isiWaveform(n) &#061; h0*idealWaveform(n) &#043; h1*idealWaveform(n-1) &#043; h2*idealWaveform(n-2) &#043; \u2026\u3002\u8fd9\u610f\u5473\u7740\u5f53\u524d\u65f6\u523b\u7684\u8f93\u51fa&#xff0c;\u4e0d\u4ec5\u53d6\u51b3\u4e8e\u5f53\u524d\u8f93\u5165\u7b26\u53f7&#xff0c;\u8fd8\u53d6\u51b3\u4e8e\u4e4b\u524d\u5df2\u7ecf\u53d1\u9001\u51fa\u53bb\u7684\u7b26\u53f7&#xff08;\u5176\u62d6\u5c3e&#xff09;\u3002\u5728\u63a5\u6536\u7aef\u8fdb\u884c\u91c7\u6837\u5224\u51b3\u65f6&#xff0c;\u8fd9\u4e9b\u201c\u5386\u53f2\u9057\u7559\u201d\u7684\u62d6\u5c3e\u5c31\u6210\u4e3a\u4e86\u5e72\u6270\u5f53\u524d\u7b26\u53f7\u7684\u566a\u58f0\u2014\u2014\u5373\u7801\u95f4\u4e32\u6270\u3002<\/p>\n<p>\u5982\u4f55\u91cf\u5316\u773c\u56fe\u8d28\u91cf&#xff1f;<br \/>\n\u9664\u4e86\u8089\u773c\u89c2\u5bdf&#xff0c;\u6211\u4eec\u8fd8\u53ef\u4ee5\u4ece\u773c\u56fe\u4e2d\u63d0\u53d6\u5173\u952e\u6307\u6807&#xff1a;<\/p>\n<ul>\n<li>\u773c\u9ad8&#xff1a;\u5782\u76f4\u65b9\u5411\u773c\u56fe\u5f20\u5f00\u7684\u6700\u5927\u9ad8\u5ea6\u3002\u773c\u9ad8\u8d8a\u5927&#xff0c;\u5bf9\u6297\u5e45\u5ea6\u566a\u58f0\u7684\u80fd\u529b\u8d8a\u5f3a\u3002<\/li>\n<li>\u773c\u5bbd&#xff1a;\u6c34\u5e73\u65b9\u5411\u773c\u56fe\u5f20\u5f00\u7684\u6700\u5927\u5bbd\u5ea6\u3002\u773c\u5bbd\u8d8a\u5927&#xff0c;\u5bf9\u6297\u5b9a\u65f6\u6296\u52a8&#xff08;\u65f6\u949f\u504f\u5dee&#xff09;\u7684\u80fd\u529b\u8d8a\u5f3a\u3002<\/li>\n<li>\u4fe1\u566a\u6bd4\u5bb9\u9650\/\u566a\u58f0\u5bb9\u9650&#xff1a;\u901a\u5e38\u4e0e\u773c\u9ad8\u76f8\u5173\u3002<\/li>\n<\/ul>\n<p>\u867d\u7136MATLAB\u7684eyediagram\u51fd\u6570\u4e3b\u8981\u63d0\u4f9b\u53ef\u89c6\u5316&#xff0c;\u4f46\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5904\u7406\u4fe1\u53f7\u6570\u636e\u6765\u8fd1\u4f3c\u4f30\u7b97\u3002\u4f8b\u5982&#xff0c;\u53ef\u4ee5\u5728\u6700\u4f73\u91c7\u6837\u65f6\u523b&#xff08;\u901a\u5e38\u662f\u773c\u56fe\u6700\u5bbd\u5904&#xff09;\u9644\u8fd1&#xff0c;\u7edf\u8ba1\u6240\u6709\u8f68\u8ff9\u5728\u8be5\u65f6\u523b\u7684\u5e45\u5ea6\u503c&#xff0c;\u5176\u5206\u5e03\u7684\u6807\u51c6\u5dee\u53ef\u4ee5\u53cd\u6620\u566a\u58f0\u5927\u5c0f&#xff0c;\u800c\u5747\u503c\u95f4\u7684\u5dee\u5f02\u53ef\u4ee5\u53cd\u6620\u773c\u9ad8\u3002<\/p>\n<p>\u5b9e\u9a8c\u4e2d\u53ef\u80fd\u9047\u5230\u7684\u201c\u5751\u201d\u4e0e\u89e3\u51b3\u65b9\u6848&#xff1a;<\/p>\n<li>\n<p>\u9519\u8bef&#xff1a;\u672a\u627e\u5230 \u2018eyediagram\u2019 \u51fd\u6570<\/p>\n<ul>\n<li>\u539f\u56e0&#xff1a;Communications Toolbox\u6216DSP System Toolbox\u672a\u5b89\u88c5\u3002<\/li>\n<li>\u89e3\u51b3&#xff1a;\u8fd0\u884c which eyediagram -all \u67e5\u770b\u662f\u5426\u5728\u8def\u5f84\u3002\u5982\u679c\u6ca1\u6709&#xff0c;\u9700\u8981\u5b89\u88c5\u76f8\u5e94\u5de5\u5177\u7bb1\u3002\u4f5c\u4e3a\u4e34\u65f6\u66ff\u4ee3&#xff0c;\u53ef\u4ee5\u5c1d\u8bd5\u81ea\u5df1\u7f16\u5199\u7b80\u5355\u7684\u91cd\u53e0\u7ed8\u56fe\u51fd\u6570&#xff0c;\u4f46\u590d\u6742\u5ea6\u4f1a\u5927\u5927\u589e\u52a0\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u73b0\u8c61&#xff1a;\u773c\u56fe\u770b\u8d77\u6765\u5f88\u5947\u602a&#xff0c;\u50cf\u5f88\u591a\u79bb\u6563\u7684\u70b9&#xff0c;\u6ca1\u6709\u5f62\u6210\u8fde\u7eed\u7684\u201c\u773c\u775b\u201d<\/p>\n<ul>\n<li>\u539f\u56e0&#xff1a;\u6700\u53ef\u80fd\u662ffs&#xff08;\u6bcf\u7b26\u53f7\u91c7\u6837\u6570&#xff09;\u8bbe\u7f6e\u8fc7\u4f4e&#xff0c;\u6216\u8005N&#xff08;\u6570\u636e\u957f\u5ea6&#xff09;\u8bbe\u7f6e\u8fc7\u77ed\u3002<\/li>\n<li>\u89e3\u51b3&#xff1a;\u786e\u4fddfs\u81f3\u5c11\u5927\u4e8e8&#xff0c;N\u81f3\u5c11\u4e3a\u51e0\u767e\u3002\u63d0\u9ad8\u8fd9\u4e24\u4e2a\u53c2\u6570\u503c\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u73b0\u8c61&#xff1a;\u6709ISI\u7684\u773c\u56fe\u548c\u65e0ISI\u7684\u773c\u56fe\u770b\u8d77\u6765\u533a\u522b\u4e0d\u5927<\/p>\n<ul>\n<li>\u539f\u56e0&#xff1a;\u4fe1\u9053\u8109\u51b2\u54cd\u5e94channelIR\u8bbe\u7f6e\u4e0d\u5f53&#xff0c;\u4f8b\u5982\u5176\u80fd\u91cf\u51e0\u4e4e\u5168\u90e8\u96c6\u4e2d\u5728\u7b2c\u4e00\u4e2a\u62bd\u5934&#xff08;\u5982[0.99, 0.01]&#xff09;&#xff0c;ISI\u6548\u5e94\u592a\u5fae\u5f31\u3002<\/li>\n<li>\u89e3\u51b3&#xff1a;\u589e\u5f3a\u4fe1\u9053\u62d6\u5c3e\u7684\u7cfb\u6570\u3002\u5c1d\u8bd5\u4f7f\u7528[0.7, 0.5]\u6216[0.5, 0.5]\u8fd9\u7c7b\u7cfb\u6570&#xff0c;\u4f7f\u540e\u7eed\u62bd\u5934\u7684\u80fd\u91cf\u4e0e\u4e3b\u5f84\u76f8\u5f53&#xff0c;ISI\u6548\u5e94\u4f1a\u975e\u5e38\u660e\u663e\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u9700\u6c42&#xff1a;\u6211\u60f3\u6a21\u62df\u66f4\u590d\u6742\u7684\u4fe1\u9053&#xff0c;\u6bd4\u5982\u5e26\u566a\u58f0\u7684<\/p>\n<ul>\n<li>\u6269\u5c55&#xff1a;\u5728\u751f\u6210isiWaveform\u540e&#xff0c;\u53ef\u4ee5\u4e3a\u5176\u6dfb\u52a0\u9ad8\u65af\u767d\u566a\u58f0\u3002\u4f8b\u5982&#xff1a;SNR_dB &#061; 20; % \u4fe1\u566a\u6bd4<br \/>\nsignalPower &#061; mean(isiWaveform.^2);<br \/>\nnoisePower &#061; signalPower \/ (10^(SNR_dB\/10));<br \/>\nnoise &#061; sqrt(noisePower) * randn(size(isiWaveform));<br \/>\nisiNoisyWaveform &#061; isiWaveform &#043; noise;<\/p>\n<p>\u7136\u540e\u5bf9isiNoisyWaveform\u7ed8\u5236\u773c\u56fe&#xff0c;\u4f60\u4f1a\u89c2\u5bdf\u5230\u5728ISI\u7684\u57fa\u7840\u4e0a&#xff0c;\u773c\u56fe\u8fdb\u4e00\u6b65\u6a21\u7cca\u5e76\u51fa\u73b0\u5782\u76f4\u65b9\u5411\u7684\u6296\u52a8\u3002<\/li>\n<\/ul>\n<\/li>\n<h3>5. \u8d85\u8d8a\u57fa\u7840&#xff1a;\u773c\u56fe\u5728\u771f\u5b9e\u7cfb\u7edf\u8c03\u8bd5\u4e2d\u7684\u5e94\u7528\u601d\u8def<\/h3>\n<p>\u638c\u63e1\u4e86\u57fa\u7840\u7684\u751f\u6210\u4e0e\u5bf9\u6bd4\u65b9\u6cd5\u540e&#xff0c;\u6211\u4eec\u53ef\u4ee5\u601d\u8003\u5982\u4f55\u5c06\u8fd9\u4e2a\u5de5\u5177\u7528\u4e8e\u66f4\u8d34\u8fd1\u5b9e\u9645\u7684\u573a\u666f\u3002\u773c\u56fe\u5206\u6790\u7edd\u975e\u4ec5\u4ec5\u505c\u7559\u5728\u8bfe\u5802\u5b9e\u9a8c&#xff0c;\u5b83\u5728\u9ad8\u901f\u4e32\u884c\u94fe\u8def&#xff08;\u5982USB\u3001PCIe\u3001HDMI&#xff09;\u3001\u65e0\u7ebf\u901a\u4fe1\u63a5\u6536\u673a\u8bc4\u4f30\u4e2d\u90fd\u662f\u65e5\u5e38\u624b\u6bb5\u3002<\/p>\n<p>\u7ed3\u5408\u5747\u8861\u6280\u672f&#xff1a;<br \/>\n\u5728\u5b9e\u9645\u901a\u4fe1\u7cfb\u7edf\u4e2d&#xff0c;\u4e3a\u4e86\u5bf9\u6297ISI&#xff0c;\u6211\u4eec\u901a\u5e38\u4f1a\u4f7f\u7528\u5747\u8861\u5668\u3002\u4f60\u53ef\u4ee5\u5728\u6211\u4eec\u7684\u5b9e\u9a8c\u6846\u67b6\u4e2d\u8f7b\u677e\u52a0\u5165\u4e00\u4e2a\u7b80\u5355\u7684\u7ebf\u6027\u5747\u8861\u5668&#xff0c;\u89c2\u5bdf\u773c\u56fe\u5982\u4f55\u88ab\u201c\u91cd\u65b0\u6253\u5f00\u201d\u3002<\/p>\n<p>% \u5047\u8bbe\u6211\u4eec\u4f7f\u7528\u4e00\u4e2a\u7b80\u5355\u7684\u4e09\u62bd\u5934\u8feb\u96f6\u5747\u8861\u5668<br \/>\n% \u5176\u76ee\u6807\u662f\u8fd1\u4f3c\u53cd\u8f6c\u4fe1\u9053\u54cd\u5e94<br \/>\nchannelIR &#061; [0.8, 0.4, 0.2]&#039;; % \u4fe1\u9053<br \/>\nequalizerTaps &#061; [1.25, -0.5, 0]; % \u4e00\u4e2a\u975e\u5e38\u7b80\u5316\u7684\u5747\u8861\u5668\u7cfb\u6570&#xff08;\u53ef\u901a\u8fc7\u7b97\u6cd5\u8ba1\u7b97&#xff09;<br \/>\n% \u5bf9\u63a5\u6536\u5230\u7684\u542bISI\u4fe1\u53f7\u8fdb\u884c\u5747\u8861<br \/>\nequalizedSignal &#061; filter(equalizerTaps, 1, isiWaveform);<br \/>\n% \u7ed8\u5236\u5747\u8861\u540e\u7684\u773c\u56fe<br \/>\nfigure;<br \/>\neyediagram(equalizedSignal, 2*fs, 2, fs);<br \/>\ntitle(&#039;\u7ecf\u8fc7\u5747\u8861\u5904\u7406\u540e\u7684\u773c\u56fe&#039;);<\/p>\n<p>\u8fd0\u884c\u8fd9\u6bb5\u4ee3\u7801&#xff0c;\u4f60\u4f1a\u53d1\u73b0\u539f\u672c\u56e0ISI\u800c\u95ed\u5408\u7684\u773c\u56fe&#xff0c;\u5728\u5747\u8861\u540e\u6709\u4e86\u660e\u663e\u7684\u6539\u5584\u3002\u8fd9\u76f4\u89c2\u5730\u5c55\u793a\u4e86\u5747\u8861\u6280\u672f\u5728\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u6838\u5fc3\u4f5c\u7528\u3002<\/p>\n<p>\u7528\u4e8e\u65f6\u949f\u6062\u590d\u5206\u6790&#xff1a;<br \/>\n\u773c\u56fe\u6c34\u5e73\u65b9\u5411\u7684\u5f20\u5f00\u5ea6\u76f4\u63a5\u5173\u7cfb\u5230\u65f6\u949f\u6062\u590d\u7684\u96be\u6613\u7a0b\u5ea6\u3002\u5728\u5b9e\u9645\u7684\u793a\u6ce2\u5668\u6216\u4fe1\u53f7\u5206\u6790\u4eea\u4e2d&#xff0c;\u5e38\u5229\u7528\u773c\u56fe\u6765\u6d4b\u91cf\u6296\u52a8\u3002\u4f60\u53ef\u4ee5\u5728MATLAB\u4e2d\u6a21\u62df\u5b9a\u65f6\u8bef\u5dee&#xff1a;<\/p>\n<p>% \u5728\u6700\u4f73\u91c7\u6837\u65f6\u523b\u5f15\u5165\u4e00\u4e2a\u56fa\u5b9a\u7684\u5b9a\u65f6\u504f\u79fb<br \/>\nsamplingOffset &#061; 0.1 * Ts; % \u504f\u79fb10%\u7684\u7b26\u53f7\u5468\u671f<br \/>\n% \u91cd\u65b0\u751f\u6210\u65f6\u95f4\u8f74\u5e76\u91c7\u6837&#xff08;\u8fd9\u91cc\u9700\u8981\u63d2\u503c&#xff0c;\u7b80\u5316\u5904\u7406\u53ef\u8fd1\u4f3c\u79fb\u4f4d&#xff09;<br \/>\n% 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