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finish pa phase calibration, add sample data
测试了三台对飞节点的相对幅相,测试了一台814节点的相对幅相
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@@ -13,42 +13,26 @@
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clc; clear;
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%% initial parameters/初始参数
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interp = 8; % interpolation factor
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process_interp = 8;
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channelNum = 4;
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dataLen = 8192;
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symNum = 8;
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fs = 48e6;
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freqRange = 10000:1000:28000;
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dataFile = [ ...
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% "iladata_rx_data_26G_20230509_1445.csv", ...
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% "iladata_rx_data_26G_20230509_1715.csv", ...
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"iladata_rx_data_26G_20230510_1030.csv", ...
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"iladata_rx_data_26G_20230510_1100.csv", ...
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"iladata_rx_data_26G_20230510_1115.csv", ...
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"iladata_rx_data_26G_20230510_1415_A-1.csv", ...
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"iladata_rx_data_26G_20230510_1415_A-2.csv", ...
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"iladata_rx_data_26G_20230510_1415_A-3.csv", ...
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"iladata_rx_data_26G_20230510_1455_B-1.csv", ...
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"iladata_rx_data_26G_20230510_1455_B-2.csv", ...
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"iladata_rx_data_26G_20230510_1455_B-3.csv", ...
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"iladata_rx_data_26G_20230510_1500_A-1.csv", ...
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"iladata_rx_data_26G_20230510_1500_A-2.csv", ...
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"iladata_rx_data_26G_20230510_1500_A-3.csv", ...
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"iladata_rx_data_26G_20230510_1530_B-1.csv", ...
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"iladata_rx_data_26G_20230510_1530_B-2.csv", ...
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"iladata_rx_data_26G_20230510_1530_B-3.csv", ...
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"iladata_rx_data_26G_20230510_1600_B-1.csv", ...
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"iladata_rx_data_26G_20230510_1600_B-2.csv", ...
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"iladata_rx_data_26G_20230510_1630_B-1.csv", ...
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"iladata_rx_data_26G_20230510_1630_B-2.csv", ...
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"iladata_rx_data_26G_20230510_1630_B-3.csv", ...
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"iladata_rx_data_26G_20230510_1725_B-1.csv", ...
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"iladata_rx_data_26G_20230510_1725_B-2.csv", ...
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"iladata_rx_data_26G_20230510_1725_B-3.csv", ...
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"iladata_rx_data_26G_20230510_1730_A-1.csv", ...
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"iladata_rx_data_26G_20230510_1730_A-2.csv", ...
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"iladata_rx_data_26G_20230510_1730_A-3.csv", ...
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"iladata_rx_data_26G_20230510_1740_B-1.csv", ...
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"iladata_rx_data_26G_20230510_1740_B-2.csv", ...
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"iladata_rx_data_26G_20230510_1740_B-3.csv", ...
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];
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1400_A-1.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1400_A-2.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1400_A-3.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1430_B-1.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1430_B-2.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1430_B-3.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1510_A-1.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1510_A-2.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1510_A-3.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1535_B-1.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1535_B-2.csv", ...
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"./基带2201005，天线2202004/iladata_rx_data_26G_20230515_1535_B-3.csv", ...
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];
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dataFileNum = length(dataFile);
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@@ -58,13 +42,14 @@ pnSequence = comm.PNSequence('Polynomial','x^7+x^6+1', ...
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PRBS7 = pnSequence();
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PRBS7_polar = 1-2*[PRBS7;0];
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chipLen = length(PRBS7_polar); % pn chip length
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symNum = dataLen/chipLen/interp; % total symbol number
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pnSequence = comm.PNSequence('Polynomial','x^10+x^7+1', ...
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'InitialConditions',[zeros(1,9),1],'SamplesPerFrame',2^10-1);
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PRBS10 = pnSequence();
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PRBS10_polar = 1-2*[PRBS10;0];
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%% data analysis
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% search for frequency shift
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freqRange = 22000:10:28000;
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freqDmfPeak = zeros(dataFileNum,length(freqRange));
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freqTarget = zeros(dataFileNum,channelNum);
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@@ -92,14 +77,26 @@ desiredPntIndexList = strings(dataFileNum*(symNum-1)+1,channelNum+1);
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desiredPntIndexList(1,:) = ["Chip Index", "ch1", "ch2", "ch3", "ch4"];
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for data_num = 1:dataFileNum
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% read data
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rawData = readmatrix(dataFile(data_num));
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disp(dataFile(data_num));
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seqRx = [];
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seqRx(:,1) = (rawData(:, 4) + 1i*rawData(:, 5)).';
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seqRx(:,2) = (rawData(:, 6) + 1i*rawData(:, 7)).';
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seqRx(:,3) = (rawData(:, 8) + 1i*rawData(:, 9)).';
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seqRx(:,4) = (rawData(:,10) + 1i*rawData(:,11)).';
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if (dataFile(data_num).contains(["0509","0510","0511"]))
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PRBS = PRBS7_polar;
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else
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PRBS = PRBS10_polar;
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end
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dataLen = length(seqRx(:,1));
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chipLen = length(PRBS); % pn chip length
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PRBS_up_flip = kron(flip(PRBS),ones(process_interp,1));
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% search for frequency shift
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for ch_num = 1:channelNum
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for freq_num = 1:length(freqRange)
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@@ -107,7 +104,7 @@ for data_num = 1:dataFileNum
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data_cxr = seqRx(1:2*chipLen*interp,ch_num).*exp(1i*2*pi* ...
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freqRange(freq_num)/fs*(0:2*chipLen*interp-1)');
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% convolve multiplied data with pn sequence, without zero-padded results
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data_dmf = conv(data_cxr, kron(flip(PRBS7_polar),ones(interp,1)),'valid');
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data_dmf = conv(downsample(data_cxr,interp/process_interp), PRBS_up_flip,'valid');
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% peak search
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freqDmfPeak(data_num,freq_num) = max(abs(data_dmf(1:end-1)));
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end
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@@ -117,9 +114,9 @@ for data_num = 1:dataFileNum
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% phase amplitude analysis
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for ch_num = 1:channelNum
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seqRxCxr = seqRx(:,ch_num).*exp(1i*2*pi*freqTarget(1)/fs*(0:dataLen-1)');
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seqRxCxrCorr = conv(seqRxCxr,kron(flip(PRBS7_polar),ones(interp,1)),'valid');
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seqRxCxrCorrSplit = reshape(seqRxCxrCorr(1:end-1),chipLen*interp, ...
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seqRxCxr = seqRx(:,ch_num).*exp(1i*2*pi*freqTarget(1,ch_num)/fs*(0:dataLen-1)');
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seqRxCxrCorr = conv(downsample(seqRxCxr,interp/process_interp),PRBS_up_flip,'valid');
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seqRxCxrCorrSplit = reshape(seqRxCxrCorr(1:end-1),chipLen*process_interp, ...
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symNum-1);
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desiredPntIndex(data_num,:,ch_num) = find(abs(seqRxCxrCorrSplit) == ...
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@@ -149,7 +146,12 @@ for data_num = 1:dataFileNum
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angEstSymRawList((data_num-1)*(symNum-1)+1+(1:symNum-1),2:end) = string(angEstSymRaw(data_num,:,:));
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end
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%% data analysis
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freqTargetRelative = freqTarget - freqTarget(:,1);
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freqTargetMax = max(freqTarget,[],'all');
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freqTargetMIn = min(freqTarget,[],'all');
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maxDesiredPointIndexDiff = max(abs(desiredPntIndex-(desiredPntIndex(:,:,1))),[],"all");
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ampEstSymMaxList = strings(dataFileNum+1,channelNum+1);
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@@ -183,14 +185,16 @@ figure(1);
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subplot(121);
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plot(ampEstSymAvg);
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legend({"ch1","ch2","ch3","ch4"});
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legend(["ch1","ch2","ch3","ch4"]);
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title("Amplitude Estimation");
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ylim([min(ampEstSymAvg,[],'all')-0.2,max(ampEstSymAvg,[],'all')+0.2]);
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grid on; grid minor;
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subplot(122);
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plot(angEstSymAvg);
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legend({"ch1","ch2","ch3","ch4"});
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legend(["ch1","ch2","ch3","ch4"]);
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title("Angle Estimation");
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ylim([-10,370]);
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grid on; grid minor;
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% xticks([1 5 10 20])
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% xticklabels(dataFile)
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