Semi-Orthogonal MARC with half duplex relaying: A Backward Compatible Cooperative Network with Interference Channels - Archive ouverte HAL Access content directly
Conference Papers Year : 2016

Semi-Orthogonal MARC with half duplex relaying: A Backward Compatible Cooperative Network with Interference Channels

Abstract

This paper proposes a full-rate cooperative scheme adapted to the slow fading semi-orthogonal multiple access relay channel (MARC). It is assumed that the sources transmit on orthogonal channels and the relay is half duplex transmitting on the same channels as the one of the sources. The sources employ LDPC to encode their messages before transmitting them, while the relay uses a simple demodulate-and-forward strategy to transmit the combination of the received codewords. The presence of the relay does not affect the time-scheduling of the sources. Therefore, this scheme is backward compatible to existing non-cooperative systems. In order to cancel the interference at the destination, we propose a joint network-channel decoder that uses maximum a posteriori (MAP) detection and channel decoding. Through numerical results, we show the benefits of joint network-channel decoder. We also show that the proposed scheme significantly outperforms, in terms of BER, the non-cooperative system as well as the classical relay-assisted orthogonal channel network and that it achieves the maximum code diversity.
Fichier principal
Vignette du fichier
DraftBackwardSPAWC_Final.pdf (532.92 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01315162 , version 1 (12-05-2016)

Identifiers

Cite

Mohieddine El Soussi, Xuan Thang Vu, Nguyen Hong Nhat, Pierre Duhamel, Florence Alberge, et al.. Semi-Orthogonal MARC with half duplex relaying: A Backward Compatible Cooperative Network with Interference Channels. 17th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2016), IEEE, Jul 2016, Edinburgh, United Kingdom. ⟨10.1109/spawc.2016.7536879⟩. ⟨hal-01315162⟩
89 View
120 Download

Altmetric

Share

Gmail Facebook X LinkedIn More