The Gray-Wyner network with a limited-rate helper to the encoder and decoders

Abstract

In this paper, the Gray-Wyner network with a limited-rate helper is investigated. The helper sends a common message to the encoder and the decoders. We characterize the complete rate region. Successive refinement with a limited-rate helper is treated as a special case. The rate region for a Gaussian source with squared error distortions is explicitly calculated.