A Simple Distributed Relay-Assignment Algorithm for Multi-Antenna Relay Networks

Chao Zhang; Lei Wang; Weidong Wang; Guo Wei

ChinaCom2008-Wireless Communications and Networking Symposium

Research Article

A Simple Distributed Relay-Assignment Algorithm for Multi-Antenna Relay Networks

Cite: BibTeX Plain Text

@INPROCEEDINGS{10.1109/CHINACOM.2008.4685049,
    author={Chao Zhang and Lei Wang and Weidong Wang and Guo Wei},
    title={A Simple Distributed Relay-Assignment Algorithm for Multi-Antenna Relay Networks},
    proceedings={ChinaCom2008-Wireless Communications and Networking Symposium},
    publisher={IEEE},
    proceedings_a={CHINACOM2008-WCN},
    year={2008},
    month={11},
    keywords={cooperative relay; relay select; multi-antenna relay},
    doi={10.1109/CHINACOM.2008.4685049}
}

Chao Zhang
Lei Wang
Weidong Wang
Guo Wei
Year: 2008
A Simple Distributed Relay-Assignment Algorithm for Multi-Antenna Relay Networks
CHINACOM2008-WCN
IEEE
DOI: 10.1109/CHINACOM.2008.4685049

Chao Zhang¹^,*, Lei Wang¹, Weidong Wang¹^,*, Guo Wei¹^,*

1: Dept. of Electronic Engineering & Information Science， and Wireless Information Network Lab. University of Science and Technology of China, Hefei, China.

*Contact email: lockhead@mail.ustc.edu.cn, wdwang@ustc.edu.cn, wei@ustc.edu.cn

Abstract

In multi-antenna relay networks, how to assign source-relay pairs is still a challenge. In this paper, we propose a simple distributed relay-assignment algorithm for multi-antenna relay networks, which exploits the ability of AOA (Angle of Arrival) estimating in a multi-antenna terminal. The proposed algorithm based on an opportunistic relaying model uses RTS packet to estimate AOA of the source and CTS packet to estimate AOA of the destination in potential relays, and then calculates the interval angle of each node. The best relay is chosen to be with the maximum interval angle between source-relay link and relay-destination link. An outage analysis for the proposed algorithm is provided within a limited area where available relaying nodes are uniformly distributed. Finally, simulation results show that the proposed algorithm offers great improvement on the reliability of the relaying links and is more suitable for multi-antenna relay networks than existing relay-assignment algorithms. The outage analysis is also verified.

Keywords: cooperative relay; relay select; multi-antenna relay

Published: 2008-11-21
Publisher: IEEE
Modified: 2010-05-16

: http://dx.doi.org/10.1109/CHINACOM.2008.4685049