| 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 Augmentatio
n 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。 |
| 关键词: SBAS 卷积码；Viterbi译码；幸存路径；优化；性能补偿 |
| DOI： |
|
| 基金项目: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) |
|
| Viterbi decoding optimization scheme for SBAS satellite signals |
| LIN Mu-long,YI Qing-ming |
| (Department of Electronic Engineering,Jinan University，Guangzhou 510632,China) |
| Abstract: |
| In order to reduce time wasted by hardware, an optimal solution for Vi
terbi decoding processing is proposed to deal with SBAS（Satellite-based Augmen
tation System） satellite signal, which
is encoded by convolution code. The decoding data flow is truncated and per
formance compensation is performed in this solution. The simulation results from
the Matlab m
odel show that the solution can obtain the same decoding performance as traditi
onal decoding method, and can save the hardware storage capacity and reduce pres
sure of data processing at the same time, which provides good reference for hard
ware implementation. |
| Key words: SBAS convolutional code Viterbi decoding survivor path optimization performance
compensation |
