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Proceedings Paper

High-throughput GPU-based LDPC decoding
Author(s): Yang-Lang Chang; Cheng-Chun Chang; Min-Yu Huang; Bormin Huang
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Paper Abstract

Low-density parity-check (LDPC) code is a linear block code known to approach the Shannon limit via the iterative sum-product algorithm. LDPC codes have been adopted in most current communication systems such as DVB-S2, WiMAX, WI-FI and 10GBASE-T. LDPC for the needs of reliable and flexible communication links for a wide variety of communication standards and configurations have inspired the demand for high-performance and flexibility computing. Accordingly, finding a fast and reconfigurable developing platform for designing the high-throughput LDPC decoder has become important especially for rapidly changing communication standards and configurations. In this paper, a new graphic-processing-unit (GPU) LDPC decoding platform with the asynchronous data transfer is proposed to realize this practical implementation. Experimental results showed that the proposed GPU-based decoder achieved 271x speedup compared to its CPU-based counterpart. It can serve as a high-throughput LDPC decoder.

Paper Details

Date Published: 24 August 2010
Proc. SPIE 7810, Satellite Data Compression, Communications, and Processing VI, 781008 (24 August 2010); doi: 10.1117/12.862716
Show Author Affiliations
Yang-Lang Chang, National Taipei Univ. of Technology (Taiwan)
Cheng-Chun Chang, National Taipei Univ. of Technology (Taiwan)
Min-Yu Huang, National Taipei Univ. of Technology (Taiwan)
Bormin Huang, Univ. of Wisconsin-Madison (United States)

Published in SPIE Proceedings Vol. 7810:
Satellite Data Compression, Communications, and Processing VI
Bormin Huang; Antonio J. Plaza; Joan Serra-Sagristà; Chulhee Lee; Yunsong Li; Shen-En Qian, Editor(s)

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