124 lines
4.6 KiB
Matlab
124 lines
4.6 KiB
Matlab
%% RX for labview
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clc;
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close all;
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clear ;
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%% 接收端输入测试数据
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receiveAntennasNum = 1;
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receiveBandwidth = 20e6;
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syncAlgo = 'first';
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chanEstiAlgo = 'first';
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equalizeAlgo = 'first';
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demodMode = 'first';
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interpCodeAlgo = 'first';
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%% 接收端输入端接口
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rxInput.receiveAntennasNum = receiveAntennasNum; % 1 or 2
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rxInput.receiveBandwidth = receiveBandwidth;% 10~20M
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rxInput.syncAlgo = syncAlgo;% 接口，输入类型为string
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rxInput.chanEstiAlgo = chanEstiAlgo;% 接口，输入类型为string
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rxInput.equalizeAlgo = equalizeAlgo;% 接口，输入类型为string
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rxInput.demodMode = demodMode;% 接口，输入类型为string
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rxInput.interpCodeAlgo = interpCodeAlgo;% 接口，输入类型为string
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%% 测试数据，发送端波形参数
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userNum = 1;
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fileType = 'text';
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encryptMode = 'encryptMode';
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antennasNum = 1;
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centerFreq = 2450e6;
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sendBandwidth = 5e6;
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fftNum = 128;
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CPratio = 0.25;
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pilotInterval = 3;
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% MCS_set=[2,2;4,2;4,4;16,2;16,4;64,3;64,4;64,6];% 加密算法需要做一个适配，CHB，3.19
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MCS = [16,4];
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subcarriersNum = 128; % 待适配
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%% 接收端 计算发送端的一切状态
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txInput.userNum = userNum; % 1 or 2
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txInput.fileType = fileType; % 'text' or 'picture'
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txInput.encryptMode = encryptMode; % 'encrypt' or 'not encrypt'
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txInput.antennasNum = antennasNum; % 1 or 2
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txInput.centerFreq = centerFreq; % 500MHz~2.4G
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txInput.sendBandwidth = sendBandwidth; % 20~40MHz
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txInput.fftNum = fftNum;% 128 or 256 or 512
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txInput.CPratio = CPratio; % 0.25 or 0.125 or 0.0625
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txInput.pilotInterval = pilotInterval; % 3 5 7
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txInput.MCS = MCS; % a set [2,2;4,2;4,4;16,2;16,4;64,3;64,4;64,6]
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txInput.subcarriersNum = subcarriersNum;% 52 or 106 or 242
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PacketSize = 200;
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NumerologySel = [txInput.fftNum,txInput.CPratio,txInput.pilotInterval];
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MCS_no = txInput.MCS;
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[SysParameters,WaveformPara] = WaveformNumerologyCal(PacketSize,NumerologySel,MCS_no);
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seed_set = [1 2 3];
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rng(seed_set(1),'twister');
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dataPacketBits = randi([0 1],WaveformPara.Payload,1);
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scrData = TX_CRC32_Scramble(dataPacketBits);
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trellis = poly2trellis(7,[171 133]);
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tx_encoded_bit = convenc(scrData,trellis,WaveformPara.puncpat);
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tx_padded_bit = [tx_encoded_bit;zeros(WaveformPara.DataPadding,1)];
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%---------------------------------------------
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dataMod = qammod(tx_padded_bit,WaveformPara.Mod,'InputType','bit');
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WaveformPara.Power_sym = mean(abs(dataMod).^2);
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dataMod = reshape(dataMod,WaveformPara.UsedSubcarrier,[]);
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%% 获取信道响应 %假设已知前一时刻的信号
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% 生成信道响应
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N_carriers = WaveformPara.N_FFT;
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channel_response=sqrt(1/2)*(randn(1,N_carriers)+1i*randn(1,N_carriers));
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N_windows = 8;
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N_level = 10;
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min_len_CP = 30;
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CPset = Generate_CP(channel_response,N_windows,N_level,min_len_CP);
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[serialOFDMsym,WaveformPara.pilot,serialFrameLen] = tx_FFTSymbolGen_PilotBlockPN(dataMod,WaveformPara,CPset);
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WaveformPara.Power_sig = mean(abs(serialOFDMsym).^2);
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[WaveformPara.preamble,WaveformPara.c1,WaveformPara.c2] = ...
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generatePreamble(WaveformPara,WaveformPara.Power_sig);
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%% 输入数据，接收端
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% load('preambleData.mat')
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load('rxdata6normalizedzero.mat')
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% A = 20*log10(abs(fft(rxSignal)));
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% plot(A);
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% rxSignal = rxSignal(5382:8680)';
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% rxSignal = downsample(rxSignal, 2)';%data1 part
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% rxSignal = rxSignal(5128:7889)';%data2 part
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% rxSignal = rxSignal(4500+370:7000)';%data4 part
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rxSignal = rxSignal(14000:17000)'/sqrt(mean(abs(rxSignal(14000:17000).^2)));
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rxSignal=awgn(rxSignal,20,mean(abs(rxSignal.^2)));
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% rxSignal = txSignalNormalized;
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% [rxSignal_sync,SyncErr] = rxSyncSC(rxSignal,WaveformPara,myFrameLen);
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[rxSignal_sync,MCS,PSDULength,failCheck,rec_frameNo,estNumerlogy,numeroError] = rx_preambleprocess(rxSignal);
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rxSignal_sync = rxSignal_sync(1:serialFrameLen);
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[rxDataModLs] = rx_PilotBlockChanEstForLabview(rxSignal_sync,WaveformPara,CPset); % 去CP的地方
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dataDemod = qamdemod(rxDataModLs,WaveformPara.Mod,'OutputType','approxllr', ...
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'UnitAveragePower',false,'NoiseVariance',0.0243);%ChanPara.N0
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dataDePadded = dataDemod(1:end - WaveformPara.DataPadding);
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tb = 8;
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decoded = vitdec(dataDePadded,trellis,tb,'trunc','unquant',WaveformPara.puncpat);
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[rxBits,PER] = RX_CRC32_deScramble(decoded);% 丢包率
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[numErrors,BER] = biterr(dataPacketBits,rxBits);
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%% 接收端输出接口
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rxOutput.delaySpread = 0; % 接口，输出类型为double
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rxOutput.SNR = 0;% 接口，输出类型为double
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rxOutput.RSSI = 0;% 接口，输出类型为double
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rxOutput.BER = BER;% 输出类型为double
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rxOutput.PER = PER;% 输出类型为double
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rxOutput.EVM = 0;% 接口，输出类型为double
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rxOutput.phaseNoise = 0;% 接口，输出类型为double
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BER
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PER
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% SyncErr |