Power allocation for nonregenerative OFDM relay links with outdated channel knowledge

Shashika Biyanwilage; Upul Gunawardana; Ranjith Liyanapathirana

Power allocation for nonregenerative OFDM relay links with outdated channel knowledge

Shashika Biyanwilage, Upul Gunawardana, Ranjith Liyanapathirana

School of Engineering, Design & Built Environment

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

2 Citations (Scopus)

Abstract

This paper investigates the power allocation problem in a two-hop OFDM relay link with a nonregenarative relay where the available channel state information (CSI) is an outdated version of the actual instantaneous CSI. A power allocation method is proposed to maximize the expected capacity, assuming that the correlation between the outdated and instantaneous CSI is known. The performance is compared with that of the baseline method, where the power allocation is performed solely based on the outdated CSI. Results confirm that the proposed method outperforms the baseline method when the available CSI is highly outdated.

Original language	English
Title of host publication	Proceedings of the 11th International Symposium on Communications and Information Technologies (ISCIT 2011): Green and Cognitive Communications for the Future, 12-14 October 2011, Hangzhou, China
Publisher	IEEE
Pages	428-432
Number of pages	5
ISBN (Print)	9781457712937
Publication status	Published - 2011
Event	International Symposium on Communications and Information Technologies - Duration: 2 Oct 2012 → …

Conference

Conference	International Symposium on Communications and Information Technologies
Period	2/10/12 → …

Cite this

Biyanwilage, S., Gunawardana, U., & Liyanapathirana, R. (2011). Power allocation for nonregenerative OFDM relay links with outdated channel knowledge. In Proceedings of the 11th International Symposium on Communications and Information Technologies (ISCIT 2011): Green and Cognitive Communications for the Future, 12-14 October 2011, Hangzhou, China (pp. 428-432). IEEE.

Biyanwilage, Shashika ; Gunawardana, Upul ; Liyanapathirana, Ranjith. / Power allocation for nonregenerative OFDM relay links with outdated channel knowledge. Proceedings of the 11th International Symposium on Communications and Information Technologies (ISCIT 2011): Green and Cognitive Communications for the Future, 12-14 October 2011, Hangzhou, China. IEEE, 2011. pp. 428-432

@inproceedings{2d63d4eaa3be4cbdabc4ad7f657713cf,

title = "Power allocation for nonregenerative OFDM relay links with outdated channel knowledge",

abstract = "This paper investigates the power allocation problem in a two-hop OFDM relay link with a nonregenarative relay where the available channel state information (CSI) is an outdated version of the actual instantaneous CSI. A power allocation method is proposed to maximize the expected capacity, assuming that the correlation between the outdated and instantaneous CSI is known. The performance is compared with that of the baseline method, where the power allocation is performed solely based on the outdated CSI. Results confirm that the proposed method outperforms the baseline method when the available CSI is highly outdated.",

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

year = "2011",

language = "English",

isbn = "9781457712937",

pages = "428--432",

booktitle = "Proceedings of the 11th International Symposium on Communications and Information Technologies (ISCIT 2011): Green and Cognitive Communications for the Future, 12-14 October 2011, Hangzhou, China",

publisher = "IEEE",

note = "International Symposium on Communications and Information Technologies ; Conference date: 02-10-2012",

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Biyanwilage, S, Gunawardana, U & Liyanapathirana, R 2011, Power allocation for nonregenerative OFDM relay links with outdated channel knowledge. in Proceedings of the 11th International Symposium on Communications and Information Technologies (ISCIT 2011): Green and Cognitive Communications for the Future, 12-14 October 2011, Hangzhou, China. IEEE, pp. 428-432, International Symposium on Communications and Information Technologies, 2/10/12.

Power allocation for nonregenerative OFDM relay links with outdated channel knowledge. / Biyanwilage, Shashika; Gunawardana, Upul ; Liyanapathirana, Ranjith.
Proceedings of the 11th International Symposium on Communications and Information Technologies (ISCIT 2011): Green and Cognitive Communications for the Future, 12-14 October 2011, Hangzhou, China. IEEE, 2011. p. 428-432.

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

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AU - Biyanwilage, Shashika

AU - Gunawardana, Upul

AU - Liyanapathirana, Ranjith

PY - 2011

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N2 - This paper investigates the power allocation problem in a two-hop OFDM relay link with a nonregenarative relay where the available channel state information (CSI) is an outdated version of the actual instantaneous CSI. A power allocation method is proposed to maximize the expected capacity, assuming that the correlation between the outdated and instantaneous CSI is known. The performance is compared with that of the baseline method, where the power allocation is performed solely based on the outdated CSI. Results confirm that the proposed method outperforms the baseline method when the available CSI is highly outdated.

AB - This paper investigates the power allocation problem in a two-hop OFDM relay link with a nonregenarative relay where the available channel state information (CSI) is an outdated version of the actual instantaneous CSI. A power allocation method is proposed to maximize the expected capacity, assuming that the correlation between the outdated and instantaneous CSI is known. The performance is compared with that of the baseline method, where the power allocation is performed solely based on the outdated CSI. Results confirm that the proposed method outperforms the baseline method when the available CSI is highly outdated.

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Power allocation for nonregenerative OFDM relay links with outdated channel knowledge

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