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来自「收集的一组跟噪声产生以及消除、衡量消噪性能指标的MATLAB仿真源代码」· 文本 代码 · 共 10 行

I need to solve the problem with BER calculation. I made a coherent correlation
type detector in MATLAB for a BPSK signal, but when I demodulate the noised
signal BER is much worse than it sould be in theory for coherent detection. I
add noise using awgn() function setting the desired SNR[dB]. I assume
EbNo[dB]=SNR[dB]+10log(TbitTsample) So why is it My M-files are attached. I
used 1000 bits to simulate and SNR=-12dB which equals according to the equation
EbNo=8dB. Theoretically the result shoul have been around 1e-4 and I get
BER=4e-2. The BER curves of the desired and of the reality I have are also enclosed.
Please help!