Layered Source-Channel Coding over Two-Way Relay Networks

Abstract

In this paper, we study the performances of various layered source-channel coding schemes over two-way relay networks, where the sources are coded into different layers and transmitted by progressive coding or superposition coding. The two-way relay network employs multiple-access-broadcast or time-division-broadcast protocol, and the relay uses decode-andforward (DF) protocol. We first derive the optimal distortion exponents of different schemes at high signal-to-noise ratios (SNRs). Fast resource allocation algorithms are then developed to optimize the expected distortion of the source at finite SNRs. Simulation results show that layered coding achieves better performance than single rate coding, and the proposed fast resource allocation scheme is near-optimal.

Joint Source-Channel Coding of JPEG 2000 Image Transmission Over Two-Way Multi-Relay Networks

“…The theoretical advantage of integrating cooperative communication and progressive image coding has been studied in [36]- [39]. Based on these analyses, several works have been proposed to study the image/video transmission over oneway cooperative communication channels [40]- [42].…”