implementing m-mary qam modulation and demodulation with convolutional encoder and viterbi decoder and AWGN
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I have implemented M-mary QAM modulation and demodulation system using AWGN,convolutional encoder and viterbi decoder.for the 16,32,64 128 and 256 qam, it give me a correct constellation points for 16qam only but when i used 32 64 and 128 and 256 the constellation diagram is not same as m-mary qam. the point did not enough. maybe there are some parameter to be change but i do not know which one. here are the link to download the circuit so that it will be more easier for you to answer my question. http://www.mediafire.com/?gy7nix121bnf1s3 http://www.mediafire.com/?osbe83bpvitjg42
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