I need a Matlab Code for BER versus SNR for ML RECEIVER

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pari

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Hi all,
I need urgent help to simulate the BER versus SNR for COHERENT ML RECEIVER using BPSK ,AWGN and RAYLEIGHT CHANNEL.

i face a problem to find the right shape,as SNR increas BER decreas but in convex way rather than concave way.

is there any idea?:!:
 

If you plot BER vs. SNR with a log-log scale, your error rate curve should be a straight line in large SNR region and the slope of the straight line should be -1.
 

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    pari

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ach ja PangPangfish tnx for ur Reply,I found my dumb failure for couple of days just forgot to mention it hier...
I helped u for ur Reply!!!!
 

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