Iteratively Suboptimum Decoder Design for Distributed Space-Time Coding Based on Distributed Interleavers

In, the authors have presented a detailed analysis on the problem of distributed space-time coding employing Amplify-and-Forward (AF) protocol for a synchronized wireless relay networks, where maximum likelihood (ML) decoding is employed. In this paper, an iterative turbo-like decoder is introduced to improve system performance by allocating interleavers at each relay node and using multiuser concept. Due to different overall channel gains consisting source-relay link and relay-destination link, ordering and canceling techniques of interferences are considered in our design. Simulation results show an accepted improvement in the high SNR region.