Selective sub-carrier relaying and power allocation for multi-relay-assisted cooperative OFDM systems

Shashika Biyanwilage; Upul Gunawardana; Ranjith Liyanapathirana

doi:10.1109/AUSCTW.2011.5728756

Selective sub-carrier relaying and power allocation for multi-relay-assisted cooperative OFDM systems

Shashika Biyanwilage, Upul Gunawardana, Ranjith Liyanapathirana

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

10 Citations (Scopus)

Abstract

We investigate the relay selection, sub-carrier pairing and power allocation problems in a two-hop, multi-relay-assisted cooperative OFDM system with amplify-and-forward (AF) relays. We propose a sub optimal but more feasible approach to solve the power allocation problem with relay selection and sub-carrier pairing. The proposed method is based on selective sub-carrier relaying concept where the relays forward only a selected set of sub-carriers of the received OFDM symbol. Transmit power allocation is performed such that the end-to-end system capacity is maximized under individual power constraints at each node. The proposed technique outperforms the all sub-carrier relaying scheme when the relays are distributed between the source and the destination.

Original language	English
Title of host publication	Proceedings of the 2011 Australian Communications Theory Workshop, The University of Melbourne, Melbourne, Australia, 31st January - 2nd February 2011
Publisher	IEEE
Pages	164-169
Number of pages	6
ISBN (Print)	9781424497133
DOIs	https://doi.org/10.1109/AUSCTW.2011.5728756
Publication status	Published - 2011
Event	Australian Communications Theory Workshop - Duration: 29 Jan 2013 → …

Conference

Conference	Australian Communications Theory Workshop
Period	29/01/13 → …

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10.1109/AUSCTW.2011.5728756

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Biyanwilage, S., Gunawardana, U., & Liyanapathirana, R. (2011). Selective sub-carrier relaying and power allocation for multi-relay-assisted cooperative OFDM systems. In Proceedings of the 2011 Australian Communications Theory Workshop, The University of Melbourne, Melbourne, Australia, 31st January - 2nd February 2011 (pp. 164-169). IEEE. https://doi.org/10.1109/AUSCTW.2011.5728756

@inproceedings{9772ea25aaf842548f787255e74feea3,

title = "Selective sub-carrier relaying and power allocation for multi-relay-assisted cooperative OFDM systems",

abstract = "We investigate the relay selection, sub-carrier pairing and power allocation problems in a two-hop, multi-relay-assisted cooperative OFDM system with amplify-and-forward (AF) relays. We propose a sub optimal but more feasible approach to solve the power allocation problem with relay selection and sub-carrier pairing. The proposed method is based on selective sub-carrier relaying concept where the relays forward only a selected set of sub-carriers of the received OFDM symbol. Transmit power allocation is performed such that the end-to-end system capacity is maximized under individual power constraints at each node. The proposed technique outperforms the all sub-carrier relaying scheme when the relays are distributed between the source and the destination.",

author = "Shashika Biyanwilage and Upul Gunawardana and Ranjith Liyanapathirana",

year = "2011",

doi = "10.1109/AUSCTW.2011.5728756",

language = "English",

isbn = "9781424497133",

pages = "164--169",

booktitle = "Proceedings of the 2011 Australian Communications Theory Workshop, The University of Melbourne, Melbourne, Australia, 31st January - 2nd February 2011",

publisher = "IEEE",

note = "Australian Communications Theory Workshop ; Conference date: 29-01-2013",

}

Biyanwilage, S, Gunawardana, U & Liyanapathirana, R 2011, Selective sub-carrier relaying and power allocation for multi-relay-assisted cooperative OFDM systems. in Proceedings of the 2011 Australian Communications Theory Workshop, The University of Melbourne, Melbourne, Australia, 31st January - 2nd February 2011. IEEE, pp. 164-169, Australian Communications Theory Workshop, 29/01/13. https://doi.org/10.1109/AUSCTW.2011.5728756

Selective sub-carrier relaying and power allocation for multi-relay-assisted cooperative OFDM systems. / Biyanwilage, Shashika; Gunawardana, Upul ; Liyanapathirana, Ranjith.
Proceedings of the 2011 Australian Communications Theory Workshop, The University of Melbourne, Melbourne, Australia, 31st January - 2nd February 2011. IEEE, 2011. p. 164-169.

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

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T1 - Selective sub-carrier relaying and power allocation for multi-relay-assisted cooperative OFDM systems

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AU - Gunawardana, Upul

AU - Liyanapathirana, Ranjith

PY - 2011

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N2 - We investigate the relay selection, sub-carrier pairing and power allocation problems in a two-hop, multi-relay-assisted cooperative OFDM system with amplify-and-forward (AF) relays. We propose a sub optimal but more feasible approach to solve the power allocation problem with relay selection and sub-carrier pairing. The proposed method is based on selective sub-carrier relaying concept where the relays forward only a selected set of sub-carriers of the received OFDM symbol. Transmit power allocation is performed such that the end-to-end system capacity is maximized under individual power constraints at each node. The proposed technique outperforms the all sub-carrier relaying scheme when the relays are distributed between the source and the destination.

AB - We investigate the relay selection, sub-carrier pairing and power allocation problems in a two-hop, multi-relay-assisted cooperative OFDM system with amplify-and-forward (AF) relays. We propose a sub optimal but more feasible approach to solve the power allocation problem with relay selection and sub-carrier pairing. The proposed method is based on selective sub-carrier relaying concept where the relays forward only a selected set of sub-carriers of the received OFDM symbol. Transmit power allocation is performed such that the end-to-end system capacity is maximized under individual power constraints at each node. The proposed technique outperforms the all sub-carrier relaying scheme when the relays are distributed between the source and the destination.

UR - http://handle.uws.edu.au:8081/1959.7/542825

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DO - 10.1109/AUSCTW.2011.5728756

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SN - 9781424497133

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BT - Proceedings of the 2011 Australian Communications Theory Workshop, The University of Melbourne, Melbourne, Australia, 31st January - 2nd February 2011

PB - IEEE

T2 - Australian Communications Theory Workshop

Y2 - 29 January 2013

ER -

Selective sub-carrier relaying and power allocation for multi-relay-assisted cooperative OFDM systems

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