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

页码：2429 / 2433

页数：5

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