1 research outputs found
Design of Protograph Codes for Additive White Symmetric Alpha-Stable Noise Channels
The protograph low-density parity-check (LDPC) codes possess many attractive
properties, such as the low encoding/decoding complexity and better error floor
performance, and hence have been successfully applied to different types of
communication and data storage channels. In this paper,we design protograph
LDPC codes for communication systems corrupted by the impulsive noise, which
are modeled as additive white symmetric alpha-stable noise (AWSaSN) channels.
We start by presenting a novel simulation-based protograph extrinsic
information transfer (P-EXIT) analysis to derive the iterative decoding
threshold of the protograph codes. By further applying the asymptotic weight
distribution (AWD) analysis, we design new protograph codes for the AWSaSN
channel. Both theoretical analysis and simulation results demonstrate that the
proposed protograph codes can provide better error rate performance than the
prior art AR4JA code, the irregular codes optimized for the AWGN channel, as
well as the irregular codes optimized for the AWSaSN channel