Adaptive power loading for multi-relay OFDM regenerative networks with relay selection

Osama Amin; Murat Uysal

doi:10.1109/TCOMM.2011.122111.100197A

Adaptive power loading for multi-relay OFDM regenerative networks with relay selection

Osama Amin, Murat Uysal

Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper, we propose an adaptive power loading algorithm for an OFDM (orthogonal frequency division multiplexing)-based multi-relay regenerative network with relay selection. The proposed scheme is based on selecting the "best" relay(s) according to different strategies and distributing the power adaptively among the subcarriers of source and selected relay(s) as to minimize an upper bound on the bit error rate (BER). Our Monte Carlo simulation results demonstrate superior performance gains through power loading with respect to conventional equal power loading schemes. The effects of imperfect channel estimation and relay location on the BER performance are further discussed.

Original language	English (US)
Article number	6118258
Pages (from-to)	614-619
Number of pages	6
Journal	IEEE Transactions on Communications
Volume	60
Issue number	3
DOIs	https://doi.org/10.1109/TCOMM.2011.122111.100197A
State	Published - Mar 2012

Keywords

OFDM
cooperative diversity
detect-and-forward relaying
power allocation
relay selection

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TCOMM.2011.122111.100197A

Cite this

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title = "Adaptive power loading for multi-relay OFDM regenerative networks with relay selection",

abstract = "In this paper, we propose an adaptive power loading algorithm for an OFDM (orthogonal frequency division multiplexing)-based multi-relay regenerative network with relay selection. The proposed scheme is based on selecting the {"}best{"} relay(s) according to different strategies and distributing the power adaptively among the subcarriers of source and selected relay(s) as to minimize an upper bound on the bit error rate (BER). Our Monte Carlo simulation results demonstrate superior performance gains through power loading with respect to conventional equal power loading schemes. The effects of imperfect channel estimation and relay location on the BER performance are further discussed.",

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AU - Uysal, Murat

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AB - In this paper, we propose an adaptive power loading algorithm for an OFDM (orthogonal frequency division multiplexing)-based multi-relay regenerative network with relay selection. The proposed scheme is based on selecting the "best" relay(s) according to different strategies and distributing the power adaptively among the subcarriers of source and selected relay(s) as to minimize an upper bound on the bit error rate (BER). Our Monte Carlo simulation results demonstrate superior performance gains through power loading with respect to conventional equal power loading schemes. The effects of imperfect channel estimation and relay location on the BER performance are further discussed.

KW - OFDM

KW - cooperative diversity

KW - detect-and-forward relaying

KW - power allocation

KW - relay selection

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Adaptive power loading for multi-relay OFDM regenerative networks with relay selection

Abstract

Keywords

ASJC Scopus subject areas

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