摘要
卫星通信信道具有功率受限、带宽充足的特点,要求采用具有强大纠错能力的信道纠错技术。Turbo码以其接近信道容量的纠错能力而在卫星通信中有广阔的应用前景。多重Turbo码可以充分利用信道的带宽特性,并能克服功率受限的弱点。针对卫星通信的需要,采用了多重Turbo码的编码形式,设计了几种译码结构,对不同译码结构的纠错能力进行仿真比较,结果表明设计方案具有接近信道容量的纠错能力,同时由于码长较短,为实际实现和处理时延的减少带来方便。
Satellite communication channel has the characteristic of power limited, band abundance, and powerful error correcting ability FEC scheme is needed. For its near Shannon limit error correcting capability, Turbo codes may be suitable for satellite communication systems. The multiple Turbo codes can utilize channel capacity sufficiency and overcome the disadvantages of power limited for satellite communication systems. Force on the needed for satellite communication systems, multiple Turbo codes is adopted and server decoding schemes were proposed with simulation. Simulation results show that, the schemes proposed can get near channel capacity error correcting performance with short code block.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第9期49-51,63,共4页
Journal of Chongqing University
基金
重庆市应用基础项目(2003-7961)
重庆大学骨干教师基金资助
关键词
卫星通信
TURBO码
译码
satellite communications
turbo codes
decoding
