SBAS卫星信号的Viterbi译码优化方案  

Viterbi Decoding Optimization Scheme for SBAS Satellite Signals

作　　者：林木龙[1] 易清明[1] 

机构地区：[1]暨南大学电子工程系,广州510632

出　　处：《电讯技术》2012年第8期1308-1311,共4页Telecommunication Engineering

基　　金：2011年产学研项目(2011B090400565);2011年广东高校产学研结合示范基地及科技成果转化重大项目(cgzhzd1103);2011年广东省产学研项目(2011A090200088)~~

摘　　要：为了减少硬件处理的时间浪费,针对经由卷积编码的SBAS(Satellite-based Augmentation System)卫星信号,提出一种优化的Viterbi译码处理方案。该方案对译码数据流进行截断处理并进行性能补偿,通过Matlab平台对其进行建模仿真。仿真结果表明,该方案能够在节约硬件存储容量和减少数据处理压力的同时,获得与传统译码同等的译码性能,这为硬件实现提供了很好的参考依据。In order to reduce time wasted by hardware, an optimal solution for Viterbi decoding processing is proposed to deal with SBAS（Satellite - based Augmentation System） satellite signal, which is encoded by convo- lution code. The decoding data flow is truncated and performance compensation is performed in this solution. The simulation results from the Matlab model show that the solution can obtain the same decoding performance as traditional decoding method, and can save the hardware storage capacity and reduce pressure of data processing at the same time, which provides good reference for hardware implementation.

关 键 词：SBAS 卷积码 VITERBI译码 幸存路径 优化 性能补偿 

分 类 号：TN911[电子电信—通信与信息系统]