To cooperate, or not to cooperate in imperfectly-known fading channels

Junwei Zhang; Mustafa Cenk Gursoy

doi:10.1109/SPAWC.2008.4641650

To cooperate, or not to cooperate in imperfectly-known fading channels

Junwei Zhang, Mustafa Cenk Gursoy

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

In this paper, communication over imperfectly-known fading channels with different degrees of cooperation is studied. The three-node relay channel is considered. It is assumed that communication starts with the network training phase in which the receivers estimate the fading coefficients of their respective channels. In the data transmission phase, amplify-and-forward and decode-and-forward relaying schemes are employed. For different cooperation protocols, achievable rate expressions are obtained. These achievable rate expressions are then used to find the optimal resource allocation strategies. In particular, the fraction of total time or bandwidth that needs to be allocated to the relay for best performance is identified. Under a total power constraint, optimal allocation of power between the source and relay is investigated. Finally, bit energy requirements in the low-power regime are studied.

Original language	English (US)
Pages	461-465
Number of pages	5
DOIs	https://doi.org/10.1109/SPAWC.2008.4641650
State	Published - 2008
Externally published	Yes
Event	2008 IEEE 9th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2008 - Recife, Brazil Duration: Jul 6 2008 → Jul 9 2008

Other

Other	2008 IEEE 9th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2008
Country/Territory	Brazil
City	Recife
Period	7/6/08 → 7/9/08

ASJC Scopus subject areas

Electrical and Electronic Engineering
Computer Science Applications
Information Systems

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10.1109/SPAWC.2008.4641650

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title = "To cooperate, or not to cooperate in imperfectly-known fading channels",

abstract = "In this paper, communication over imperfectly-known fading channels with different degrees of cooperation is studied. The three-node relay channel is considered. It is assumed that communication starts with the network training phase in which the receivers estimate the fading coefficients of their respective channels. In the data transmission phase, amplify-and-forward and decode-and-forward relaying schemes are employed. For different cooperation protocols, achievable rate expressions are obtained. These achievable rate expressions are then used to find the optimal resource allocation strategies. In particular, the fraction of total time or bandwidth that needs to be allocated to the relay for best performance is identified. Under a total power constraint, optimal allocation of power between the source and relay is investigated. Finally, bit energy requirements in the low-power regime are studied.",

author = "Junwei Zhang and Gursoy, {Mustafa Cenk}",

note = "Copyright: Copyright 2009 Elsevier B.V., All rights reserved.; 2008 IEEE 9th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2008 ; Conference date: 06-07-2008 Through 09-07-2008",

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doi = "10.1109/SPAWC.2008.4641650",

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T1 - To cooperate, or not to cooperate in imperfectly-known fading channels

AU - Zhang, Junwei

AU - Gursoy, Mustafa Cenk

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N2 - In this paper, communication over imperfectly-known fading channels with different degrees of cooperation is studied. The three-node relay channel is considered. It is assumed that communication starts with the network training phase in which the receivers estimate the fading coefficients of their respective channels. In the data transmission phase, amplify-and-forward and decode-and-forward relaying schemes are employed. For different cooperation protocols, achievable rate expressions are obtained. These achievable rate expressions are then used to find the optimal resource allocation strategies. In particular, the fraction of total time or bandwidth that needs to be allocated to the relay for best performance is identified. Under a total power constraint, optimal allocation of power between the source and relay is investigated. Finally, bit energy requirements in the low-power regime are studied.

AB - In this paper, communication over imperfectly-known fading channels with different degrees of cooperation is studied. The three-node relay channel is considered. It is assumed that communication starts with the network training phase in which the receivers estimate the fading coefficients of their respective channels. In the data transmission phase, amplify-and-forward and decode-and-forward relaying schemes are employed. For different cooperation protocols, achievable rate expressions are obtained. These achievable rate expressions are then used to find the optimal resource allocation strategies. In particular, the fraction of total time or bandwidth that needs to be allocated to the relay for best performance is identified. Under a total power constraint, optimal allocation of power between the source and relay is investigated. Finally, bit energy requirements in the low-power regime are studied.

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DO - 10.1109/SPAWC.2008.4641650

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T2 - 2008 IEEE 9th Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2008

Y2 - 6 July 2008 through 9 July 2008

ER -

To cooperate, or not to cooperate in imperfectly-known fading channels

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