Gaussian Multiple Description Coding with Low-Density Generator Matrix Codes
Multiple description coding is a classic problem in network information theory. El Gamal and Cover established a general inner bound of the 2-description rate region, commonly referred to as the EGC region. Ozarow proved that the EGC region is tight in the quadratic Gaussian case. In fact, it has been shown, by refining and generalizing Ozarow's proof technique, that a natural extension of the EGC region to the L-description case is tight for Gaussian multiple descriptions coding with individual and central distortion constraints.