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Java implantation of LDPC decoding with Matlab interface for both AWGN and BSC

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This is a Java implantation of LDPC decoding with Matlab interface for both AWGN and BSC channels

snr2sigma(SNR, codeRate)
% Authors:
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% Shuang Wang, Lijuan Cui and Samuel Cheng
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% Copyright:
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% Copyright ? 2007-2011 Shuang Wang
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% Questions:
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% For any questions, please contact me by shuangwang AT ou dot edu
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% reference
%  L. Cui, S. Wang, S. Cheng, M. Yeary, "Adaptive Binary Slepian-Wolf Decoding using Particle Based Belief Propagation", Communications, IEEE Transactions on, to appear.
%  S. Wang, L. Cui, S. Cheng, Y. Zhai, M. Yeary, Q. Wu, "Noise Adaptive LDPC Decoding Using Particle Filtering," Communications, IEEE Transactions on, Vol 59. pp. 913 - 916, April 2011.
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function sigma = snr2sigma(SNR, codeRate)            
SNR = 10.^(SNR./10);
sigma = (2*codeRate*SNR).^(-0.5);
end

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