A Comparative Performance and Complexity Study of Short- Length LDPC and Turbo Product Codes. In: Proc. IEEE Intl. Conf. Info. & Comm. Tech., April 2006.

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Abstract

This paper presents a comparative performance and complexity study between low-density parity-check (LDPC) codes and turbo product codes (TPC) of short block length (within 2048 bits). The LDPC codes are of the semi-random (SR) type, characterized by low encoder complexity, and are further optimized by eliminating short cycles of length 4 (minimum girth 6). The TPC codes are obtained from 2D and 3D constructions chosen to match the LDPC codes' parameters. The numerical results show that the SR-LDPC codes have slightly better error performance (to within 0.5dB, at a BER of 1E-5) while demonstrating lower computational complexity per decoder iteration, but the required number of decoding iterations is larger. However, this disadvantage is significantly reduced for moderately high signal-to-noise ratios (starting from 2.5dB). It is therefore concluded that SR-LDPC codes have a more competitive performance-complexity advantage overall.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	Electrical
Department:	College of Engineering and Physics > Electrical Engineering
Depositing User:	MOHAMMAD NURUZZAMAN
Date Deposited:	02 Jun 2008 08:46
Last Modified:	01 Nov 2019 13:25
URI:	http://eprints.kfupm.edu.sa/id/eprint/1007