Nonlinear Sparse-Graph Codes for Lossy Compression of Discrete Nonredundant Sources
Ankit Gupta, Sergio Verdú · 2007
We propose a scheme to implement lossy data compression for discrete equiprobable sources using block codes based on sparse matrices. We prove asymptotic optimality of the codes for a Hamming distortion criterion. We also present a sub-optimal decoding algorithm, which has near optimal performance for moderate blocklengths.