A constrained approach to pre-compensation for TDD OFDM systems

MRG Butler; PN Fletcher; AR Nix; DR Bull

doi:10.1109/VETECS.2001.944923

A constrained approach to pre-compensation for TDD OFDM systems

MRG Butler, PN Fletcher, AR Nix, DR Bull

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

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Abstract

Pre-compensation techniques can be used to enhance the bit error rate (BER) performance of time division duplex (TDD) orthogonal frequency division multiplexing (OFDM) communication links. With pre-compensation at the transmitter, the power assigned to each subcarrier is varied according to the channel state information (CSI). This paper derives a pre-compensation algorithm for OFDM systems that use coherent quadrature phase shift keying (QPSK) modulation on each subcarrier. The algorithm attempts to minimize the received BER subject to a constraint on the transmitted signal power. In order to yield a closed-form solution, the minimization is based on an approximation of the BER function, and is sub-optimal. The performance of the algorithm is compared with the fully optimal solution. In addition, the possible exploitation of the technique within a wireless local area network (WLAN) is discussed.

Translated title of the contribution	A constrained approach to pre-compensation for TDD OFDM systems
Original language	English
Title of host publication	53rd IEEE Vehicular Technology Conference
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	648 - 652
Number of pages	5
Volume	1
ISBN (Print)	0780367286
DOIs	https://doi.org/10.1109/VETECS.2001.944923
Publication status	Published - May 2001
Event	53rd Vehicular Technology Conference 2001 (VTC 2001-Spring) - Rhodes, Greece Duration: 1 May 2001 → …

Conference

Conference	53rd Vehicular Technology Conference 2001 (VTC 2001-Spring)
Country/Territory	Greece
City	Rhodes
Period	1/05/01 → …

Bibliographical note

Rose publication type: Conference contribution

Sponsorship: The financial support of Blue Wave Systems inc. and thc Engineering and Physical Sciences Research Council is gratefully acknowledged.

Terms of use: Copyright © 2001 IEEE. Reprinted from Proceedings of IEEE Vehicular Technology Conference, Spring 2001. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected].

By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Keywords

OFDM modulation
wireless LAN

Access to Document

10.1109/VETECS.2001.944923

Butler IEEE VTC spring2001Accepted author manuscript, 465 KB

http://hdl.handle.net/1983/298

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Cite this

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title = "A constrained approach to pre-compensation for TDD OFDM systems",

abstract = "Pre-compensation techniques can be used to enhance the bit error rate (BER) performance of time division duplex (TDD) orthogonal frequency division multiplexing (OFDM) communication links. With pre-compensation at the transmitter, the power assigned to each subcarrier is varied according to the channel state information (CSI). This paper derives a pre-compensation algorithm for OFDM systems that use coherent quadrature phase shift keying (QPSK) modulation on each subcarrier. The algorithm attempts to minimize the received BER subject to a constraint on the transmitted signal power. In order to yield a closed-form solution, the minimization is based on an approximation of the BER function, and is sub-optimal. The performance of the algorithm is compared with the fully optimal solution. In addition, the possible exploitation of the technique within a wireless local area network (WLAN) is discussed.",

keywords = "OFDM modulation, wireless LAN",

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note = "Rose publication type: Conference contribution Sponsorship: The financial support of Blue Wave Systems inc. and thc Engineering and Physical Sciences Research Council is gratefully acknowledged. Terms of use: Copyright {\textcopyright} 2001 IEEE. Reprinted from Proceedings of IEEE Vehicular Technology Conference, Spring 2001. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. ; 53rd Vehicular Technology Conference 2001 (VTC 2001-Spring) ; Conference date: 01-05-2001",

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Butler, MRG, Fletcher, PN, Nix, AR & Bull, DR 2001, A constrained approach to pre-compensation for TDD OFDM systems. in 53rd IEEE Vehicular Technology Conference. vol. 1, Institute of Electrical and Electronics Engineers (IEEE), pp. 648 - 652, 53rd Vehicular Technology Conference 2001 (VTC 2001-Spring), Rhodes, Greece, 1/05/01. https://doi.org/10.1109/VETECS.2001.944923

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N1 - Rose publication type: Conference contribution Sponsorship: The financial support of Blue Wave Systems inc. and thc Engineering and Physical Sciences Research Council is gratefully acknowledged. Terms of use: Copyright © 2001 IEEE. Reprinted from Proceedings of IEEE Vehicular Technology Conference, Spring 2001. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

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N2 - Pre-compensation techniques can be used to enhance the bit error rate (BER) performance of time division duplex (TDD) orthogonal frequency division multiplexing (OFDM) communication links. With pre-compensation at the transmitter, the power assigned to each subcarrier is varied according to the channel state information (CSI). This paper derives a pre-compensation algorithm for OFDM systems that use coherent quadrature phase shift keying (QPSK) modulation on each subcarrier. The algorithm attempts to minimize the received BER subject to a constraint on the transmitted signal power. In order to yield a closed-form solution, the minimization is based on an approximation of the BER function, and is sub-optimal. The performance of the algorithm is compared with the fully optimal solution. In addition, the possible exploitation of the technique within a wireless local area network (WLAN) is discussed.

AB - Pre-compensation techniques can be used to enhance the bit error rate (BER) performance of time division duplex (TDD) orthogonal frequency division multiplexing (OFDM) communication links. With pre-compensation at the transmitter, the power assigned to each subcarrier is varied according to the channel state information (CSI). This paper derives a pre-compensation algorithm for OFDM systems that use coherent quadrature phase shift keying (QPSK) modulation on each subcarrier. The algorithm attempts to minimize the received BER subject to a constraint on the transmitted signal power. In order to yield a closed-form solution, the minimization is based on an approximation of the BER function, and is sub-optimal. The performance of the algorithm is compared with the fully optimal solution. In addition, the possible exploitation of the technique within a wireless local area network (WLAN) is discussed.

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KW - wireless LAN

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Y2 - 1 May 2001

ER -

A constrained approach to pre-compensation for TDD OFDM systems

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