Saturday 23rd of September 2017
 

Iterative Decoding Termination Schemes for Turbo Code Performance Optimization In Mobile Wi-Max Environment


Jagdish D. Kene and Kishor D. Kulat

Use of turbo codes is more popular in most of the wireless applications, because of its greater Error control ability. The BER performance reaches to the Shannons channel capacity limit. Turbo code implementation using SISO decoders with iterative MAP decoding algorithms introduces large time delay to recover the transmitted information bits. This results in increasing Wi-Max system complexity and storage requirement (Memory size). In this paper, the efforts have been made to propose the methods for effective termination of iterations to make the decoder efficient, in terms of reduction in the time delay and the requirement of memory size while maintaining the BER performance. Authors have propose various termination techniques which help in reducing the complexity as compare to conventional MAP decoding algorithm for same BER performance.

Keywords: Turbo code, Iterative decoding, MAP Algorithm, Termination detection schemes

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ABOUT THE AUTHORS

Jagdish D. Kene
RESEARCH SCHOLAR, ECE Department, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India.

Kishor D. Kulat
PROFESSOR, ECE Department, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India.


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