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Please use this identifier to cite or link to this item: http://hdl.handle.net/2014/39500

Title: Memory-efficient decoding of LDPC codes
Authors: Kwok-San Lee, Jason
Thorpe, Jeremy
Hawkins, Jon
Keywords: Low-Density-Parity-Check (LDPC)
quantization
channel capacity
Issue Date: Sep-2005
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2005.
Citation: IEEE International Symposium on Information Theory, Adelaide, Australia, September 2005.
Abstract: We present a low-complexity quantization scheme for the implementation of regular (3,6) LDPC codes. The quantization parameters are optimized to maximize the mutual information between the source and the quantized messages. Using this non-uniform quantized belief propagation algorithm, we have simulated that an optimized 3-bit quantizer operates with 0.2dB implementation loss relative to a floating point decoder, and an optimized 4-bit quantizer operates less than 0.1dB quantization loss.
URI: http://hdl.handle.net/2014/39500
Appears in Collections:JPL TRS 1992+

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