关键词: 分布式信源编码, RA码, LDPC码, BSC信道

Abstract: 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（n²） 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.

Key words: Distributed Source Coding（DSC）, RA codes, LDPC codes, BSC channel