Outage minimized relay selection with partial channel information

Selection relaying is a promising technique for practical implementation of cooperative systems with multiple relays. However, to select the best relay, globe channel knowledge is required at the selecting entity. In this paper, we consider the relay selection problem in dual-hop amplify-and-forward...

Full description

Saved in:
Bibliographic Details
Main Authors: Zhaoxi Fang, Xiaolin Zhou, Xiaojing Bao, Zongxin Wang
Format: Conference Proceeding
Language:English
Subjects:
amplify-and-forward
Bandwidth
Channel state information
Cooperative systems
Decoding
Feedback
partial channel information
Power system relaying
Probability
Protocols
relay selection
Relays
Space time codes
Wireless relay networks
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Selection relaying is a promising technique for practical implementation of cooperative systems with multiple relays. However, to select the best relay, globe channel knowledge is required at the selecting entity. In this paper, we consider the relay selection problem in dual-hop amplify-and-forward (AF) communication systems with partial channel state information (CSI). We present relay selection strategies aiming at minimizing the outage probability with different kinds of channel knowledge available, including perfect, statistical and quantized CSI. Simulation results show that near optimal performance is achievable with a few bits feedback to the selecting entity. Thus the signaling overhead of relay selection can be greatly reduced with quantized CSI feedback.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2009.4960159