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Evaluation of Complexity Versus Performance for Turbo Code and LDPC Under Different Code Rates

Authors:
Alaa Eldin Hassan
Moawad Dessouky
Atef Abou Elazm
Mona Shokair

Keywords: turbo code; LDPC; complexity

Abstract:
Turbo codes play a major role in channel error correction schemes used in wireless communications. Turbo codes emerged in 1993 and since that time they dominate the research in error control coding together with low-density parity-check codes. Due to their remarkable performances, turbo code and low density parity check code have been accepted to a number of standards by many organizations which decide to include turbo code and low density parity check into their new standards after these codes were proven successful in a many of missions. In this paper, the calculation and comparison of performance versus complexity for those two techniques of channel coding was done. For a fair comparison, the performance and complexity should be compared together. The complexity was calculated by counting the number of clock cycles need to complete the decoding algorithm. This comparison is used as a guiding lines of using either turbo code or the low density parity check in specific communication applications, The performance comparison of turbo code and low density parity check were computed for rates 1/2 and 7/8. The complexity for the two codes were calculated for different code rates like (1/2, 1/3, 3/4, 7/8), the evaluation study concludes that the turbo code was recommended for moderate rate, while the LDPC is recommended for higher code rates.

Pages: 98 to 103

Copyright: Copyright (c) The Government of Egypt, 2012. Used by permission to IARIA.

Publication date: April 29, 2012

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-194-6

Location: Chamonix, France

Dates: from April 29, 2012 to May 4, 2012