Simulation and DSP realization of Viterbi decoding algorithm in LTE systems

Luo Youbao; Li Xiaowen

doi:10.13756/j.gtxyj.2010.03.014

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Simulation and DSP realization of Viterbi decoding algorithm in LTE systems

- Simulation and DSP realization of Viterbi decoding algorithm in LTE systems
- Study on Optical communication Issue 3, Pages: 67-70(2010)
- 作者机构：
  
  重庆邮电大学通信与信息工程学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2010.03.014
  CLC： TN929.5
- Published：2010，
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[1]罗友宝,李小文.LTE系统的Viterbi译码算法仿真及DSP实现[J].光通信研究,2010(03):67-70.

Luo Youbao, Li Xiaowen. Simulation and DSP realization of Viterbi decoding algorithm in LTE systems. [J]. (3):67-70(2010)
[1]罗友宝,李小文.LTE系统的Viterbi译码算法仿真及DSP实现[J].光通信研究,2010(03):67-70. DOI： 10.13756/j.gtxyj.2010.03.014.

Luo Youbao, Li Xiaowen. Simulation and DSP realization of Viterbi decoding algorithm in LTE systems. [J]. (3):67-70(2010) DOI： 10.13756/j.gtxyj.2010.03.014.

摘要

文章基于长期演进（LTE）系统的咬尾卷积码

通过对多种Viterbi译码算法的仿真比较

为时分长期演进（TD-LTE）测试系统选择了一种最优的Viterbi译码算法

并在TMS320C64x数字信号处理器（DSP）中实现了这种算法。提出了一些具体的软件优化策略和技巧

对加比选蝶形运算进行了大量简化。通过译码程序在CCS3.3中的运行结果

验证了该算法及优化策略和技巧的可行性和有效性。

Abstract

On the basis of the tailbiting convolutional code for Long Term Evolution（LTE） systems

this paper chooses an optimal Viterbi decoding algorithm for the TD-LTE test system after comparing multiple Viterbi algorithms by simulation and realizes it in the TMS320C64x DSP.It presents a number of specific strategies and techniques for software optimization and greatly simplifies the addition comparison selection butterfly computations.The running results of the decoding program in CCS3.3 verify the feasibility and effectiveness of this algorithm and the optimization strategies and techniques.

关键词

长期演进Viterbi译码软判决数字信号处理器实现

Keywords

LTEViterbi decodingsoft-decisionDSP realization

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School of Communication and Information Engineering,CUPT

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