协作通信，turbo码链路级仿真，中继采用置信传播算法-Collaborative communications, turbo codes link level simulation, the relay using belief propagation algorithm

低密度奇偶校验码的最大似然译码的置信度传播算法-Belief-propagation decoding algorithm: Log-likelihood domain

这是最稳定的BP译码方式，就数值精度来说的话。-Belief-propagation decoding algorithm: Probabilistic decoding The algorithm works directly with probabilities. In terms of numerical precision, it is the most stable BP decoder, although it is very intensive in terms of exp()

Belief propagation to decode Hamming(7,4) Code