LDPC Code Design for Transmission of Correlated Sources Across Noisy Channels Without CSIT

Details LDPC Code Design for Transmission of Correlated Sources Across Noisy Channels Without CSIT LDPC Code Design for Transmission of Correlated Sources Across Noisy Channels Without CSIT

2010-07-06

arxiv.org/abs/1007.0931v1

Computer Science

Information Theory

5 pages, 5 figures, to appear in ISTC 2010

Scientific paper

We consider the problem of transmitting correlated data after independent encoding to a central receiver through orthogonal channels. We assume that the channel state information is not known at the transmitter. The receiver has access to both the source correlation and the channel state information. We provide a generic framework for analyzing the performance of joint iterative decoding, using density evolution. Using differential evolution, we design punctured systematic LDPC codes to maximize the region of achievable channel conditions, with joint iterative decoding. The main contribution of this paper is to demonstrate that properly designed LDPC can perform well simultaneously over a wide range of channel parameters.

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