University of Canterbury. Electrical and Computer Engineering
Doi
Abstract
We propose a cooperative transmission scheme for two users with one common relay using superposition modulation. It uses distributed Turbo codes (DTCs) for each user. The relay always decodes, then interleaves and re-encodes the decoded
data. A new packet is formed by combining the re-encoded packets from both users using superposition modulation. This packet is forwarded to the destination with the average receive SNRs of each user. The destination uses the cooperative Turbo
decoder of [1] to improve performance. Simulation results show the proposed scheme outperforms XOR based schemes and is simple to implement