{"id":47552,"date":"2025-07-30T08:23:01","date_gmt":"2025-07-30T00:23:01","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/47552.html"},"modified":"2025-07-30T08:23:01","modified_gmt":"2025-07-30T00:23:01","slug":"%e5%a6%82%e4%bd%95%e7%94%a8usrp%e6%8d%95%e8%8e%b7%e6%89%8b%e6%9c%ba%e4%bf%a1%e5%8f%b7%e6%b3%a2%e5%bd%a2%ef%bc%88%e4%b8%ad%ef%bc%89%e6%89%8b%e6%9c%ba-%e5%9f%ba%e7%ab%99%e9%80%9a%e4%bf%a1","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/47552.html","title":{"rendered":"\u5982\u4f55\u7528USRP\u6355\u83b7\u624b\u673a\u4fe1\u53f7\u6ce2\u5f62\uff08\u4e2d\uff09\u624b\u673a\/\u57fa\u7ad9\u901a\u4fe1"},"content":{"rendered":"

\u76ee\u5f55：<\/p>\n

\u5982\u4f55\u7528USRP\u6355\u83b7\u624b\u673a\u4fe1\u53f7\u6ce2\u5f62（\u4e0a）\u7cfb\u7edf\u53ca\u77e5\u8bc6\u51c6\u5907<\/p>\n

\u5982\u4f55\u7528USRP\u6355\u83b7\u624b\u673a\u4fe1\u53f7\u6ce2\u5f62（\u4e2d）\u624b\u673a\/\u57fa\u7ad9\u901a\u4fe1<\/p>\n

\u5982\u4f55\u7528USRP\u6355\u83b7\u624b\u673a\u4fe1\u53f7\u6ce2\u5f62（\u4e0b）\u534f\u8bae\u5206\u6790<\/p>\n

\u56db\u3001\u4fe1\u53f7\u6355\u83b7\u7ed3\u679c<\/span><\/h2>\n

4.1 \u65f6\u57df\u6ce2\u5f62<\/span><\/h3>\n

\"\"<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u6211\u6000\u7591\u4e0b\u9762\u5fae\u5f31\u7684\u4fe1\u53f7\u662f\u522b\u7684\u7528\u6237\u53d1\u5c04\u7684\u4fe1\u53f7，\u548c\u6211\u5728\u540c\u4e00\u9891\u70b9\u3002<\/p>\n

\"\"<\/h3>\n

4.2 \u4fe1\u53f7\u65f6\u9891\u56fe\u6848<\/span><\/h3>\n

\"\"<\/p>\n

fs=61.44MHz\u4e0b：<\/p>\n

\"\"<\/p>\n

fs=15.36MH\u4e0b：<\/p>\n

\"\"<\/p>\n

fs=3.84MHz：\u00a0<\/p>\n

\"\"<\/p>\n

\u624b\u673a\u5173\u673a\u65f6：<\/p>\n

\"\"<\/p>\n

\u8fd9\u4e2a\u5bbd1MHz\u7684\u4e5f\u662f\u4fe1\u53f7\u5417？<\/p>\n

4.3 \u4fe1\u53f7\u661f\u5ea7\u56fe<\/span><\/h3>\n

\"\"<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u6574\u4f53\u611f\u89c93408.96MHz\u9891\u70b9\u4e0a\u53ea\u6709\u6211\u4e00\u4e2a\u7528\u6237，\u4fe1\u9053\u8d28\u91cf\u4e5f\u5f88\u597d\u3002<\/p>\n

\u4e94\u3001\u4fe1\u9053\u5206\u6790<\/span><\/h2>\n

5.1 \u5f53\u524d\u5c0f\u533a<\/span><\/h3>\n

\u6ce8\u610f\u5230PCI\u503c\u4e00\u76f4\u5728\u53d8\u5316：<\/p>\n

\"\"<\/p>\n

\u4e86\u89e3\u4e86\u4e00\u4e0b，\u4e0a\u56fe\u4e2dSS\u4e3aSignal Strength\u4fe1\u53f7\u5f3a\u5ea6，\u5176\u4ed6\u91cd\u8981\u6307\u6807\u5185\u6db5\u5982\u4e0b：<\/p>\n

    \n
  • \n

    CI（\u7269\u7406\u5c0f\u533a\u6807\u8bc6\u7b26）：\u662f\u7f51\u7edc\u4e2d\u6bcf\u4e2a\u5c0f\u533a\u7684\u552f\u4e00\u6807\u8bc6\u7b26\u3002PCI\u7528\u4e8e\u5e2e\u52a9\u79fb\u52a8\u8bbe\u5907\u8bc6\u522b\u5f53\u524d\u8fde\u63a5\u6216\u6b63\u5728\u626b\u63cf\u7684\u65e0\u7ebf\u5c0f\u533a\u3002<\/p>\n<\/li>\n

  • \n

    RSRP（\u53c2\u8003\u4fe1\u53f7\u63a5\u6536\u529f\u7387）：\u8861\u91cf\u63a5\u6536\u5230\u7684\u53c2\u8003\u4fe1\u53f7\u7684\u5f3a\u5ea6，\u5355\u4f4d\u662fdBm（\u5206\u8d1d\u6beb\u74e6）\u3002\u503c\u8d8a\u5c0f（\u6570\u503c\u8d8a\u8d1f），\u8868\u793a\u4fe1\u53f7\u8d8a\u5f31<\/p>\n<\/li>\n

  • \n

    RSRQ（\u53c2\u8003\u4fe1\u53f7\u63a5\u6536\u8d28\u91cf）：\u8861\u91cf\u63a5\u6536\u5230\u7684\u4fe1\u53f7\u8d28\u91cf，\u5b83\u662f\u57fa\u4e8eRSRP\u548c\u566a\u58f0\u6c34\u5e73\u8ba1\u7b97\u7684\u3002\u503c\u8d8a\u4f4e，\u8868\u793a\u4fe1\u53f7\u8d28\u91cf\u8d8a\u5dee\u3002<\/p>\n<\/li>\n

  • \n

    SINR（\u4fe1\u566a\u6bd4）：\u8861\u91cf\u4fe1\u53f7\u4e0e\u5e72\u6270\u52a0\u566a\u58f0\u7684\u6bd4\u503c\u3002\u503c\u8d8a\u9ad8\u8868\u793a\u4fe1\u53f7\u8d28\u91cf\u8d8a\u597d，\u7f51\u7edc\u6027\u80fd\u8d8a\u4f73\u3002<\/p>\n<\/li>\n<\/ul>\n

    \u624b\u673a\u5f53\u524d\u5c0f\u533a\u7684\u4fe1\u9053\u8d28\u91cf\u6bd4\u90bb\u5c0f\u533a\u6700\u597d\u7684\u4fe1\u9053\u8d28\u91cf\u90fd\u5f3a\u592a\u591a，\u4e00\u4e2aSINR \u4e3a11，\u4e00\u4e2aSINR\u4e3a4\u3002<\/p>\n

    5.2 \u624b\u673a\u4fe1\u53f7\u63a7\u5236<\/span><\/h3>\n

    \u4e00\u5f00\u59cb\u6211\u60f3\u901a\u8fc7\u64ad\u653e\u89c6\u9891\u7684\u65b9\u5f0f\u8ba9\u624b\u673a\u66f4\u5bc6\u96c6\u5730\u53d1\u5c04\u4fe1\u53f7：<\/p>\n

    \"\"<\/p>\n

    \u6548\u679c：<\/p>\n

    \"\"<\/p>\n

    \u611f\u89c9\u4fe1\u53f7\u53d1\u5c04\u5bc6\u96c6\u7a0b\u5ea6\u3001\u5e26\u5bbd\u7b49\u548c\u89c6\u9891\u64ad\u653e\u8fd9\u4e00\u884c\u4e3a\u4e0d\u662f\u5f88\u5339\u914d\u3002\u6211\u89c9\u5f97\u624b\u673a\u8fd9\u8fb9\u89c6\u9891\u4e00\u76f4\u64ad\u653e，\u4fe1\u53f7\u5e94\u8be5\u51e0\u4e4e\u4e00\u76f4\u51fa\u73b0\u3002<\/p>\n

    \u6211\u7a81\u7136\u60f3\u5230，\u4e00\u76f4\u64ad\u653e\u89c6\u9891\u65f6\u662f\u4e0b\u884c\u94fe\u8def\u6bd4\u8f83\u7e41\u5fd9\u3002\u867d\u7136TDD\u6a21\u5f0f\u4e0b\u884c\u94fe\u8def\u548c\u4e0a\u884c\u94fe\u8def\u662f\u540c\u4e00\u9891\u70b9，\u4f46\u662f\u57fa\u7ad9\u4fe1\u53f7\u4f20\u8f93\u5230\u624b\u673a\u8fd9\u8fb9\u529f\u7387\u5df2\u7ecf\u5f88\u4f4e\u4e86，\u624b\u673a\u5185\u7f6e\u5c04\u9891\u82af\u7247\u662f\u7ecf\u8fc7\u4e13\u95e8\u8bbe\u8ba1\u7684，\u53ef\u4ee5\u5728\u63a5\u6536\u4fe1\u53f7\u529f\u7387\u5f88\u4f4e\u7684\u60c5\u51b5\u4e0b\u6b63\u5e38\u89e3\u7801\u3001\u83b7\u53d6\u4fe1\u606f\u3002\u4f46\u662f，\u7528USRP\u53ef\u80fd\u89c2\u5bdf\u4e0d\u5230\u660e\u663e\u7684\u4e0b\u884c\u4fe1\u53f7\u4f20\u8f93\u3002<\/p>\n

    \u63a5\u53d7\u529f\u7387\u8c03\u5230\u6700\u4f4e\u65f6\u4fe1\u53f7\u53d8\u591a\u4e86\u4e9b：<\/p>\n

    \"\"<\/p>\n

    \u63a5\u6536\u589e\u76ca\u4ece31.5dB\u8c03\u523070dB:<\/p>\n

    \"\"<\/p>\n

    \"\"<\/p>\n

    \u67e5\u770bUSRP\u5c04\u9891\u53c2\u6570，\u6ca1\u663e\u793a\u6700\u4f4e\u63a5\u6536\u529f\u7387\u3002\u4f46\u662f\u6211\u611f\u89c9\u5373\u4fbfGNU Radio\u8bbe\u7f6e\u4e3a-200dB，\u5b9e\u9645\u6700\u4f4e\u63a5\u6536\u529f\u7387\u4e0d\u592a\u53ef\u80fd\u8fd9\u4e48\u4f4e，\u4e13\u95e8\u7684SP145\u9891\u8c31\u5206\u6790\u4eea\u6700\u4f4e\u63a5\u6536\u529f\u7387\u624d-110dB\u5de6\u53f3\u3002<\/p>\n

    \u6211\u53c8\u60f3\u5230\u5373\u4fbf\u624b\u673a\u5728\u64ad\u653e\u89c6\u9891，\u6709\u53ef\u80fd\u89c6\u9891\u5df2\u7ecf\u7f13\u5b58\u5b8c\u4e86，\u4e0b\u884c\u94fe\u8def\u5e76\u4e0d\u7e41\u5fd9\u4e86\u3002\u6240\u4ee5，\u5982\u679c\u8981\u8ba9\u4e0b\u884c\u94fe\u8def\u4e00\u76f4\u7e41\u5fd9，\u5c31\u8981\u4e0d\u65ad\u5207\u6362\u65b0\u89c6\u9891\u3002\u5728\u6b64\u8fc7\u7a0b\u4e2d，\u89c2\u5bdf\u4fe1\u53f7：<\/p>\n

    \"\"<\/p>\n

    \u6709\u660e\u663e\u7684\u6548\u679c\u3002<\/p>\n

    \u767e\u5ea6\u7f51\u76d8\u4e0b\u8f7d\u6587\u4ef6\u65f6：<\/p>\n

    \"\"<\/p>\n

    \u5f00\u4e86\u4f1a\u5458，\u767e\u5ea6\u7f51\u76d8\u4e0a\u4f20\u6570\u636e\u592a\u5feb\u4e86……<\/p>\n

    \u7ed9\u5fae\u4fe1\u597d\u53cb\u53d1\u89c6\u9891\u4e5f\u884c：<\/p>\n

    \"\"<\/p>\n

    \u624b\u673a\u7184\u5c4f\u65f6：<\/p>\n

    \"\"<\/p>\n

    \u5411\u597d\u53cb\u53d1\u9001\u89c6\u9891\u65f6：<\/p>\n

    \"\"<\/p>\n

    \u540c\u65f6，\u4fe1\u53f7\u5f3a\u5ea6\u548c\u5237\u89c6\u9891\u65f6\u4e00\u81f4\u3002\u8fd9\u4e5f\u63d0\u9192\u4e86\u6211，\u6bcf\u6b21\u5207\u6362\u89c6\u9891\u65f6\u624b\u673a\u662f\u8981\u53d1\u9001\u4fe1\u53f7\u7684，\u77ed\u89c6\u9891\u4e91\u670d\u52a1\u5668\u6536\u5230\u624b\u673a\u547d\u4ee4\u540e\u624d\u4e0b\u53d1\u4e0b\u4e00\u6761\u89c6\u9891\u6570\u636e\u3002\u4e5f\u5c31\u662f\u8bf4，\u5207\u6362\u89c6\u9891\u65f6\u660e\u663e\u89c2\u5bdf\u5230\u7684\u4fe1\u53f7\u57fa\u672c\u90fd\u662f\u624b\u673a\u53d1\u9001\u7684，\u800c\u975e\u6765\u81ea\u57fa\u7ad9\u7684\u3002<\/p>\n

    \u516d\u3001MATLAB \u6df1\u5ea6\u5206\u6790<\/span><\/h2>\n

    6.1 \u6570\u636e\u8bfb\u53d6<\/span><\/h3>\n

    \u5b58\u50a8\u4e86\u4e00\u6bb5\u4fe1\u53f7：<\/p>\n

    \"\"<\/p>\n

    \u5148\u68c0\u67e5\u4e0b\u91c7\u6837\u7387：<\/p>\n

    USRP\u91c7\u6837\u7387\u81ea\u68c0\u7a0b\u5e8f-CSDN\u535a\u5ba2<\/p>\n

    \"\"<\/p>\n

    \u8bbe\u7f6e\u76843.84M\u91c7\u6837\u7387，\u4e3a\u4e3b\u65f6\u949f61.44MHz\u76841\/16，\u7b97\u4e0a\u8ba1\u65f6\u8bef\u5dee，43662120\/3.84e6=11.87s，\u5dee\u4e0d\u591a\u4e86\u3002<\/p>\n

    \u7ed8\u5236\u6ce2\u5f62\u548c\u65f6\u9891\u56fe\u7a0b\u5e8f：<\/p>\n

    clc
    \nclear
    \nclose all<\/p>\n

    % \u6253\u5f00\u6587\u4ef6
    \n% fid = fopen('real_data_show.txt', 'rb'); % 'rb'\u8868\u793a\u4ee5\u4e8c\u8fdb\u5236\u8bfb\u53d6\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6
    \nfid = fopen('D:\\\\\u65e0\u7ebf\u901a\u4fe1\u7f51\u7edc\u8ba4\u77e5\\\\\u901a\u4fe1\u5b66\u62a5\\\\5G\u4fe1\u53f7\\\\fc_3408.96e6_fs_3.84MHz.txt', 'rb'); % 'rb'\u8868\u793a\u4ee5\u4e8c\u8fdb\u5236\u8bfb\u53d6\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6<\/p>\n

    % \u8bfb\u53d6\u6570\u636e
    \nraw = fread(fid, Inf, 'float32', 0, 'l'); % \u5047\u8bbe\u6570\u636e\u662f16\u4f4d\u6574\u6570，'b'\u8868\u793a\u5c0f\u7aef<\/p>\n

    % \u5173\u95ed\u6587\u4ef6
    \nfclose(fid);<\/p>\n

    data = raw(1:2:end) + 1i * raw(2:2:end); % \u590d\u6570\u6570\u7ec4<\/p>\n

    samp_rate = 3.84e6; % \u91c7\u6837\u7387 250 kHz
    \n% signal_duration = 10; % \u6bcf\u4e2a\u4fe1\u53f7\u7684\u65f6\u957f 1\u79d2
    \n% samples_per_signal = samp_rate * signal_duration;
    \n% num_signals = floor(length(data) \/ samples_per_signal);
    \n% signals = reshape(data(1:num_signals * samples_per_signal), samples_per_signal, num_signals);
    \n% data = signals(:,5);<\/p>\n

    fs = 3.84e6;
    \nN = length(data);
    \ntall = N\/fs;
    \nt = linspace(0,tall,N);<\/p>\n

    % \u65f6\u9891\u5206\u6790（\u4f7f\u7528\u77ed\u65f6\u5085\u91cc\u53f6\u53d8\u6362 STFT）
    \nwindow = 1024; % \u7a97\u53e3\u5927\u5c0f
    \nnoverlap = 512; % \u91cd\u53e0\u90e8\u5206
    \nnfft = 4096; % FFT \u70b9\u6570<\/p>\n

    % \u7ed8\u5236\u65f6\u9891\u56fe
    \nfigure;
    \n[S,F,T] = spectrogram(double(data), window, noverlap, nfft, samp_rate, 'yaxis');<\/p>\n

    % spectrogram(double(data), window, noverlap, nfft, fs, 'yaxis');<\/p>\n

    % log_data = log(abs(double(data)));
    \n% log_data(~isfinite(log_data)) = 0; % \u5c06NaN\u6216Inf\u66ff\u6362\u4e3a0
    \n% spectrogram(log_data, window, noverlap, nfft, fs, 'yaxis');<\/p>\n

    F = F\/max(F)*samp_rate\/1e6;
    \ns1 = S(1:2048,:);
    \ns2 = S(2049:end,:);
    \nS(1:2048,:)=s2;
    \nS(2049:end,:)=s1;
    \nimagesc(T,F,10*log10(abs(S)))<\/p>\n

    % imagesc(T,F,abs(S))<\/p>\n

    % xlim([0,10])
    \n% ylim([0,1000])
    \n% ylim([0,200])<\/p>\n

    % yticks_vals = yticks;
    \n% yticks_vals = yticks_vals \/ max(yticks_vals)*samp_rate\/1e3;
    \n% yticks(yticks_vals);<\/p>\n

    % colormap jet; % \u9009\u62e9\u5408\u9002\u7684\u989c\u8272\u6620\u5c04
    \n% caxis([-30 10]); % \u8bbe\u7f6e\u989c\u8272\u8f74\u8303\u56f4<\/p>\n

    xlabel('Time (s)');
    \nset(gca, 'YDir', 'normal')
    \nylabel('Frequency (MHz)');
    \n% colorbar;<\/p>\n

    phi = (1 + sqrt(5)) \/ 2;
    \npbaspect([phi 1 1]); % \u8bbe\u7f6e\u4e3a\u9ec4\u91d1\u5206\u5272\u6bd4
    \nyticks(0:0.5:3.84);
    \nxtickformat('%.2f');
    \nset(gca, 'FontName', 'Times New Roman'); % \u8bbe\u7f6e\u5750\u6807\u8f74\u5b57\u4f53
    \nset(gca, 'FontSize', 14);<\/p>\n

    6.2\u00a0\u65f6\u9891\u56fe<\/span><\/h3>\n

    \"\"<\/p>\n

    6.3 \u65f6\u57df\u6ce2\u5f62<\/span><\/h3>\n

    \"\" <\/p>\n

    11.87s<\/p>\n

    \"\" <\/p>\n

    1s<\/p>\n

    \"\" <\/p>\n

    100ms<\/p>\n

    \"\" <\/p>\n

    0.0006s 0.6ms\u00a02304points<\/p>\n

    \"\" <\/p>\n

    0.0001s 0.1ms 384point<\/p>\n","protected":false},"excerpt":{"rendered":"

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