Implementation of an efficient two-step SOYA turbo decoder for wireless communication systems

被引：0
|
作者：
Han, JH [1 ]
Erdogan, AT [1 ]
Arslan, T [1 ]
机构：
[1] Univ Edinburgh, Sch Engn & Elect, Edinburgh EH9 3JL, Midlothian, Scotland
来源：
GLOBECOM '05: IEEE Global Telecommunications Conference, Vols 1-6: DISCOVERY PAST AND FUTURE | 2005年
关键词：
turbo decoder; low power; soft output Viterbi algorithm; trace back algorithm;
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
The authors present a soft-input soft-output (SISO) turbo decoder based on the two-step soft-output Viterbi algorithm (SOVA). The turbo decoder has been implemented with the trace-back algorithm (TBA). It achieves power and area reduction by employing an additional transition metric unit (TMU) for the generation of reliability values, instead of using a FIFO block for retrieving the previously stored reliability values in the survivor memory unit (SMU). Simulation results are provided for bit error rate (BER) performance using constraint lengths of K=3, 4, and 5. Implementation results for K=5 are also provided showing 46% area and 15% power savings compared to a conventional SOYA decoder.
引用
收藏
页码：2429 / 2433
页数：5
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