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A new interconnection structure method for QC-LDPC codes

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4 Author(s)
Ghani, F. ; Sch. of Comput. & Commun. Eng., Univ. Malaysia Perlis (UniMAP), Kuala Perlis, Malaysia ; Yahya, A. ; Kader, M.A. ; Islam, M.A.

A new technique for constructing the Quasi Cyclic Low density Parity Check (QC-LDPC) codes based on splitting rows into sub rows method is proposed. The proposed QC-LDPC code, at BER of 10-6 achieves 0.1dB coding gain over the PEG-LDPC codes. Moreover, in the high Eb / N0 region, the proposed code with girths 16 and 20 respectively, achieve 0.056 dB and 0.27 dB at a BER of 10-5 over the randomly constructed code. Simulation results portray that large girth QC-LDPC codes achieve a 0.1dB coding gain over randomly constructed codes and perform 1.3dB from the Shannon-limit at a BER of -6 with a code rate of 0.89 for block length of 1332.

Published in:

Multimedia, Signal Processing and Communication Technologies (IMPACT), 2011 International Conference on

Date of Conference:

17-19 Dec. 2011