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arXiv · 1512.02520

Study of Structured Root-LDPC Codes and PEG Techniques for Block-Fading Channels

C. T. Healy·A. G. D. Uchoa·R. C. de Lamare
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Abstract

In this work, we propose structured Root-Low-Density Parity-Check (LDPC) codes and design techniques for block-fading channels. In particular, Quasi-Cyclic Root-LDPC codes, Irregular repeat-accumulate Root-LDPC codes and Controlled Doping Root-LDPC codes based on Progressive Edge Growth (PEG) techniques for block-fading channels are proposed. The proposed Root-LDPC codes are both suitable for channels under $F = 2, 3$ and $4$ independent fading per codeword. The performance of the proposed codes is investigated in terms of Frame Error Rate (FER). The proposed Root-LDPC codes are capable of achieving the channel diversity and outperform standard LDPC codes. For block-fading channel with $F = 2$ our proposed PEG-based Root-LDPC codes outperform PEG-based LDPC codes by $7.5$dB at a FER close to $10^{-3}$.

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C. T. Healy, A. G. D. Uchoa, R. C. de Lamare. 2015-12-08. Study of Structured Root-LDPC Codes and PEG Techniques for Block-Fading Channels. https://arxiv.org/abs/1512.02520

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