CAJ | 학술논문

介绍了分布式信源编码的基本原理和实现方法,说明了RA码的编译码原理,然后重点将RA码应用于分布式信源编码中并进行了仿真,在BSC信道下比较了与普通的基于LDPC的分布式信源编码的性能.仿真结果证明,使用基于RA码的分布式信源编码性能上略差于基于LDPC的方法,但编码复杂度却由原来的O(n~2)降为O(n).因此基于RA码的分布式信源编码器更适用于实时业务和需要低功耗的场合,并且能降低成本,应用前景乐观.
개소료분포식신원편마적기본원리화실현방법,설명료RA마적편역마원리,연후중점장RA마응용우분포식신원편마중병진행료방진,재BSC신도하비교료여보통적기우LDPC적분포식신원편마적성능.방진결과증명,사용기우RA마적분포식신원편마성능상략차우기우LDPC적방법,단편마복잡도각유원래적O(n~2)강위O(n).인차기우RA마적분포식신원편마기경괄용우실시업무화수요저공모적장합,병차능강저성본,응용전경악관.
This paper introduces the fundamental theory and basic implementation method of DSC(Distributed Source Coding), gives the Codec Principle of RA codes and then applies the RA codes in DSC and gives the simulation,compares it with the general DSC based on LDPC codes in the BSC channel.The simulation results show that the DSC based on RA codes is slightly worse than the implementation based on LDPC codes in performance,but its complexity declines from O(n~2) to O(n).As a result, the DSC based on RA codes is more suitable for real-time business and occasions which needs low power consumption,moreover it can reduce costs,so it has a optimistic future.