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Relay selection schemes relying on adaptive modulation and imperfect channel knowledge for cooperative networks

Relay selection schemes relying on adaptive modulation and imperfect channel knowledge for cooperative networks
Relay selection schemes relying on adaptive modulation and imperfect channel knowledge for cooperative networks
Cooperative MAC protocols have been shown to increase the attainable network throughput and to reduce the outage probability when perfect Channel State Information (CSI) is available either at the source station or at candidate relays. This paper investigates the realistically achievable network performance of relay selection schemes under imperfect CSI knowledge. Novel relay selection algorithms, based on a Markov Decision Process (MDP) framework, are proposed for mitigating the performance degradation introduced by imperfect channel knowledge. We demonstrate that the performance of cooperative MAC schemes crucially depends on the accuracy of the CSI knowledge. Furthermore, it is shown that the Markov framework allows the source station to predict the channel quality and hence to reduce the number of transmission errors, ultimately resulting in an improved network performance.
978-1-4577-2051-2
4300-4304
Babich, Fulvio
bde56684-2789-4377-861f-2d8bddf58c5c
Crismani, Alessandro
4326264b-427e-428e-9897-62d506f54ac5
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Babich, Fulvio
bde56684-2789-4377-861f-2d8bddf58c5c
Crismani, Alessandro
4326264b-427e-428e-9897-62d506f54ac5
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Babich, Fulvio, Crismani, Alessandro and Hanzo, Lajos (2012) Relay selection schemes relying on adaptive modulation and imperfect channel knowledge for cooperative networks. IEEE International Conference on Communications (ICC 2012), Canada. 10 - 15 Jun 2012. pp. 4300-4304 . (doi:10.1109/ICC.2012.6364378).

Record type: Conference or Workshop Item (Paper)

Abstract

Cooperative MAC protocols have been shown to increase the attainable network throughput and to reduce the outage probability when perfect Channel State Information (CSI) is available either at the source station or at candidate relays. This paper investigates the realistically achievable network performance of relay selection schemes under imperfect CSI knowledge. Novel relay selection algorithms, based on a Markov Decision Process (MDP) framework, are proposed for mitigating the performance degradation introduced by imperfect channel knowledge. We demonstrate that the performance of cooperative MAC schemes crucially depends on the accuracy of the CSI knowledge. Furthermore, it is shown that the Markov framework allows the source station to predict the channel quality and hence to reduce the number of transmission errors, ultimately resulting in an improved network performance.

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More information

Published date: 10 June 2012
Venue - Dates: IEEE International Conference on Communications (ICC 2012), Canada, 2012-06-10 - 2012-06-15
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 340502
URI: https://eprints.soton.ac.uk/id/eprint/340502
ISBN: 978-1-4577-2051-2
PURE UUID: 9f43a13f-7610-4031-b7cc-8c398bbae40c
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 22 Jun 2012 11:15
Last modified: 06 Jun 2018 13:15

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