Implementation of qpsk modulation to reed solomon coded data

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pinkyvidya

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To implement qpsk modulation using pskmod command in matlab requires the data bits in the range of 0:3.if i use reed solomon encoder with n=255 and k=239 from 240th bit position to 255th bit position i get data bits in the range of 1:255.Hence only 256 psk can be implemented.
But i need to implement qpsk.Is der any suitable method?Pls help.itz urgent
thanks in advance
 

hi,
i m final year student.
i have to simulate channel coding and viterbi decoding in matlab in following flow.
channel coding>bpsk modulation>pass through AWGN and Rayleigh fading channel>3-bit soft decision demodulation>viterbi decoding.
plse can u sent me matlab code for it urgently.

Added after 2 minutes:

plse sent me code fast
 

did anybody sent you any code?

if you did got it, can you pleas send it to me or post it here? I need it urgently too.
 

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