function [rxSignal,SyncErr] = rxSyncSC(rxSignal,WaveformPara,myFrameLen)
SyncErr = 0;
N = WaveformPara.N_FFT;
L = WaveformPara.CP_Len;
delay = 6000;
c1 = WaveformPara.c1;
c2 = WaveformPara.c2;
preamble = WaveformPara.preamble;

timing = estSymTiming(rxSignal,N,L);%%%%%%%%%
tshift = delay+L+1-timing;
if timing > WaveformPara.CP_Len+delay
    SyncErr=1;
    timing = delay+1;
end

rRemoveSTO = rxSignal(timing:end);%%%%%%%%%%%%%

phi = estFFO(rRemoveSTO,N,L);%%%%%%%%%%%%
rRemoveFFO = rRemoveSTO.*exp(-sqrt(-1)*2*pi*(1:length(rRemoveSTO))'*phi/N);

gEst = estIFO(rRemoveFFO,N,L,c1,c2);%%%%%%%%%%%

rRemoveIFO = rRemoveFFO.*exp(-sqrt(-1)*2*pi*(1:length(rRemoveFFO))'*(2*gEst)/N);

fshift = phi+2*gEst;

startWindow = length(preamble)-L+1;%%%%%%%%%%%%
% endWindow = startWindow+WaveformPara.FrameLen-1;%
endWindow = startWindow+myFrameLen-1;%
rxSignal = rRemoveIFO(startWindow:endWindow);

end

%% APPENDIX
function [timing,Mavg] = estSymTiming(r,N,L)
    P = zeros(length(r)-2*N/2+1,1);
    R = zeros(length(r)-2*N/2+1,1);
    M = zeros(length(P),1);

    for d = 1:length(M)
        P(d) = (r(d:d+N/2-1))'*r(d+N/2:d+N-1);

        R(d) = (r(d+N/2:d+N-1))'*r(d+N/2:d+N-1);

        M(d) = (abs(P(d)))^2/(R(d))^2;

    end

    movavgWindow = dsp.MovingAverage(L-1);
    Mavg = movavgWindow(M);
    Mavg = Mavg(L/2:end);
    [Mmax,timing] = max(Mavg);
    timing=183;
figure
plot(M)
hold on;
plot(Mavg)
end

function gEst = estIFO(rRemoveFFO,N,L,c1,c2)
    X = 1:2:N-1;

    v = sqrt(2)*c2(X)./c1(X);
    x1 = fft(rRemoveFFO(1:N))/sqrt(N);
    x2 = fft(rRemoveFFO(1+N+L:2*N+L))/sqrt(N);

    D = 2*(sum((abs(x2(X))).^2))^2;

    gNum = N/2;
    X1 = zeros(N,gNum);
    X2 = zeros(N,gNum);
    X1(:,1) = x1;
    X2(:,1) = x2;

    for i = 2:gNum
        X1(:,i) = [X1(3:end,i-1);X1(1:2,i-1)];
        X2(:,i) = [X2(3:end,i-1);X2(1:2,i-1)];
    end

    B = zeros(gNum,1);

    for i = 1:gNum
        B(i) = (abs(sum(...
            conj(X1(X,i)).*conj(v).*X2(X,i)...
            )))^2/D;
    end

    [Bmax,g] = max(B);
    G = [0:N/4-1,-N/4:-1];
    gEst = G(g);
end

function phi = estFFO(r,N,L)
    P = sum(conj(r(1:N/2)).*r(N/2+1:2*N/2));
    phi = angle(P)/pi;
end