BPSK BER simulation

Version 1.0.0.0 (44.6 KB) by Bogdan Mikhailets
correlative detector for BPSK signal
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Updated 1 Aug 2006

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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
Eb/No[dB]=SNR[dB]+10log(Tbit/Tsample) So why is it? My M-files are attached. I
used 1000 bits to simulate and SNR=-12dB which equals according to the equation
Eb/No=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!

Cite As

Bogdan Mikhailets (2026). BPSK BER simulation (https://www.mathworks.com/matlabcentral/fileexchange/11841-bpsk-ber-simulation), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R13
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.0.0.0