Diversity Analysis of Multi-User Multi-Relay Networks

In this paper, we analyze the diversity order of opportunistic scheduling networks with arbitrary numbers of relays and users. We show that the opportunistic selection of the relay-user pair with the best end-to-end signal-to-noise ratio (SNR) among M relays and N users achieves a diversity order in...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on wireless communications 2011-07, Vol.10 (7), p.2380-2389
Main Authors: Junsu Kim, Michalopoulos, D. S., Schober, R.
Format: Article
Language:English
Subjects:
Access methods and protocols, osi model
Amplification
Applied sciences
Codes
Coding, codes
Cooperative relaying
Decoding
diversity order
Exact sciences and technology
Fading
Harmonic analysis
Information, signal and communications theory
Links
Networks
outage analysis
relay selection
Relays
Scheduling
Signal and communications theory
Signal to noise ratio
Simulation
Strontium
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Transmission and modulation (techniques and equipments)
Wireless communication
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, we analyze the diversity order of opportunistic scheduling networks with arbitrary numbers of relays and users. We show that the opportunistic selection of the relay-user pair with the best end-to-end signal-to-noise ratio (SNR) among M relays and N users achieves a diversity order in the range of [M + N, MN + N] for amplify-and-forward (AF) relays and in the range of [N, MN + N] for decode-and-forward (DF) relays. Our analysis reveals that the achievable diversity order with AF relays depends on the relative strength of the source-relay (SR) and relay-destination (RD) links, while the achievable diversity order with DF relays depends on the SR link SNR. Based on our analysis, which is verified by simulation results, we show that, for AF relays, the maximum diversity order of MN + N is achieved if the SR link quality is better than the RD link quality, and, for DF relays, if the SR link is sufficiently strong such that the relays always succeed in decoding.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2011.042211.110221