基于turbo码的对称式分布式信源编码研究

分布式信源编码（DSC）能有效降低编码器复杂度，特别适合传感器网络等编码端资源受限的场合。为发挥这一优势，首先介绍了分布式信源编码理论及turbo码编码、解码原理，通过对传统turbo编码器、解码器的修改和信道置信度的调整，设计了基于turbo码的分布式信源编码方案。在此基础上进一步考虑该方案的不对称性，设计了一种基于turbo码的对称分布式信源编码方案，并结合仿真研究了参数变化对编码性能的影响。仿真结果表明，该对称编码方案在解决不对称性的同时保证了良好的编码性能。

Symmetric distributed source coding based on turbo codes

Due to much lower complexity of distributed source coding(DSC),DSC technology is especially suitable to situations with resource-limited encoders,such as sensor networks.Aiming for this advantage,the principle and theory of distributed source coding and turbo were introduced firstly,and then a process of distributed source coding based on turbo was designed and realized by modifying encoder and decoder of turbo and adjusting the confidence degree of communication channel.Moreover,considering the asymmetric ...