Opportunistic Network Coding and Signal Combining ARQ for Two-Way DF Relay Network

DOI

10.2991/icitmi-15.2015.191How to use a DOI?

Keywords

Two-way DF relay, buffer-aided relaying, opportunistic network coding, signal combining.

Abstract

For the purpose of improving the throughput and reliability of the two way decode-and-forward (DF) relay networks, we propose an opportunistic network coding and signal combining (ONCSC) based automatic repeat request (ARQ) protocol. We assume that the relay node (RN) has a buffer which can store the signals received. Hence, RN can combine the signals received from different time slots and judge to transmit or receive in the next time slot according to the output of the maximal likelihood (ML) detector. Two signal combining methods at the RN, namely maximal sum signal-to-noise ratio combining (MSSNR) and maximal minimum signal-to-noise ratio combining (MM-SNR) are proposed in this paper. Simulation results show that the proposed two signal combining methods outperform traditional No-ARQ and No-combining ARQ systems on the packets error ratio (PER) and throughput performances in the moderate SNR. Also the optimal power allocation factor between the sources and RN is discussed in the simulations.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Fei Wang
AU  - Dongmei Zhang
AU  - Kui Xu
AU  - Jingzhou Yang
AU  - Yang Liu
PY  - 2015/10
DA  - 2015/10
TI  - Opportunistic Network Coding and Signal Combining ARQ for Two-Way DF Relay Network
BT  - Proceedings of the 4th International Conference on Information Technology and Management Innovation
PB  - Atlantis Press
SP  - 1134
EP  - 1143
SN  - 2352-538X
UR  - https://doi.org/10.2991/icitmi-15.2015.191
DO  - 10.2991/icitmi-15.2015.191
ID  - Wang2015/10
ER  -