function [serialOFDMsym,pilot,serialFrameLen,symbolNum] = tx_FFTSymbolGen_PilotBlockPN_CPrand(dataModInMatrix,WaveformPara,CPset,SysParameters)

numOfdmSymbol = WaveformPara.FrameSymNum;
N_used = WaveformPara.UsedSubcarrier;
CP_Len = WaveformPara.CP_Len;

pnSequence = comm.PNSequence('Polynomial',[8 6 5 4 0], ...
            'SamplesPerFrame',N_used,'InitialConditions',[0 0 0 0 0 0 0 1]);

pilotPower = WaveformPara.Power_sym;
pilot = generatePilot(pnSequence,pilotPower);

m = WaveformPara.PilotNum-1;
dataModAddPilot = zeros(N_used,numOfdmSymbol);
for i = 1:m
    dataModAddPilot(:,(i-1)*(WaveformPara.PilotInterval+1)+1:i*(WaveformPara.PilotInterval+1)) = ...
        [pilot,dataModInMatrix(:,(i-1)*WaveformPara.PilotInterval+1:i*WaveformPara.PilotInterval)];
end
dataModAddPilot(:,m*(WaveformPara.PilotInterval+1)+1:end) = ...
    [pilot,dataModInMatrix(:,m*WaveformPara.PilotInterval+1:end)];

dataModAddPilot_shift = [zeros(1,WaveformPara.FrameSymNum);...
                        dataModAddPilot(1:(N_used-1)/2,:);...
                        zeros(WaveformPara.NullSubcarrier,WaveformPara.FrameSymNum);...
                        dataModAddPilot(1+(N_used-1)/2:end,:)];
                    

OFDMsym = ifft(dataModAddPilot_shift,[],1)*sqrt(WaveformPara.N_FFT);

[~,symNum]=size(OFDMsym);
serialOFDMsym = [];
lenCPset = length(CPset);
% 对列操作
if lenCPset<symNum
    for i = 1:symNum
        if i <= lenCPset
        serialOFDMsym = [serialOFDMsym; OFDMsym(WaveformPara.N_FFT-CPset(i)+1:end,i); OFDMsym(:,i)];
        else 
        serialOFDMsym = [serialOFDMsym; OFDMsym(WaveformPara.N_FFT-CPset(end)+1:end,i); OFDMsym(:,i)];
        end
    end

elseif length(CPset) == symNum
    for i = 1:symNum
    serialOFDMsym = [serialOFDMsym; OFDMsym(WaveformPara.N_FFT-CPset(i)+1:end,i); OFDMsym(:,i)];
    end
else
print('waiting for solve')
end

symbolNum = symNum;
serialFrameLen = length(serialOFDMsym);



% OFDMsymAddCP = [OFDMsym(WaveformPara.N_FFT-CP_Len+1:end,:);OFDMsym];              % 加CP的地方  
% 
% serialOFDMsym = reshape(OFDMsymAddCP,[],1);


end

function pilot = generatePilot(pnSequence,Power)

    pilot = pnSequence();

    bpskModulator = comm.BPSKModulator;
    pilot = bpskModulator(pilot)*sqrt(Power);
end