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。
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.
出处
《光通信研究》
北大核心
2010年第3期67-70,共4页
Study on Optical Communications
基金
国家科技重大专项项目(2009ZX03002-009)