OFDM-CDMA systems with nonlinear power amplifier

Junsong Li; Mohsen Kavehrad

doi:10.1109/WCNC.1999.796903

OFDM-CDMA systems with nonlinear power amplifier

Junsong Li, Mohsen Kavehrad

Materials Research Institute (MRI)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

10 Scopus citations

Abstract

This investigation has been motivated by a recent increased interest in orthogonal frequency division multiplexing (OFDM) CDMA systems for broadband wireless services. One of the major problems in OFDM systems is nonlinear distortion caused by high-power amplifiers. In this paper, the effect of non-perfect power amplification on OFDM-CDMA systems is examined. Simulation results show that, with an ideally linearized amplifier, the performance of OFDM-CDMA systems can be improved over an AWGN channel. In general, OFDM-CDMA systems perform better than OFDM systems with non-ideal power amplification, by using a simple code word assignment scheme.

Original language	English (US)
Title of host publication	1999 IEEE Wireless Communications and Networking Conference, WCNC
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1167-1171
Number of pages	5
ISBN (Electronic)	0780356683
DOIs	https://doi.org/10.1109/WCNC.1999.796903
State	Published - Jan 1 1999
Event	1st IEEE Annual Wireless Communications and Networking Conference, WCNC 1999 - New Orleans, United States Duration: Sep 21 1999 → Sep 24 1999

Publication series

Name	IEEE Wireless Communications and Networking Conference, WCNC
Volume	3
ISSN (Print)	1525-3511

Other

Other	1st IEEE Annual Wireless Communications and Networking Conference, WCNC 1999
Country	United States
City	New Orleans
Period	9/21/99 → 9/24/99

All Science Journal Classification (ASJC) codes

Engineering(all)

Access to Document

10.1109/WCNC.1999.796903

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title = "OFDM-CDMA systems with nonlinear power amplifier",

abstract = "This investigation has been motivated by a recent increased interest in orthogonal frequency division multiplexing (OFDM) CDMA systems for broadband wireless services. One of the major problems in OFDM systems is nonlinear distortion caused by high-power amplifiers. In this paper, the effect of non-perfect power amplification on OFDM-CDMA systems is examined. Simulation results show that, with an ideally linearized amplifier, the performance of OFDM-CDMA systems can be improved over an AWGN channel. In general, OFDM-CDMA systems perform better than OFDM systems with non-ideal power amplification, by using a simple code word assignment scheme.",

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note = "1st IEEE Annual Wireless Communications and Networking Conference, WCNC 1999 ; Conference date: 21-09-1999 Through 24-09-1999",

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Li, J & Kavehrad, M 1999, OFDM-CDMA systems with nonlinear power amplifier. in 1999 IEEE Wireless Communications and Networking Conference, WCNC., 796903, IEEE Wireless Communications and Networking Conference, WCNC, vol. 3, Institute of Electrical and Electronics Engineers Inc., pp. 1167-1171, 1st IEEE Annual Wireless Communications and Networking Conference, WCNC 1999, New Orleans, United States, 9/21/99. https://doi.org/10.1109/WCNC.1999.796903

OFDM-CDMA systems with nonlinear power amplifier. / Li, Junsong; Kavehrad, Mohsen.

1999 IEEE Wireless Communications and Networking Conference, WCNC. Institute of Electrical and Electronics Engineers Inc., 1999. p. 1167-1171 796903 (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - This investigation has been motivated by a recent increased interest in orthogonal frequency division multiplexing (OFDM) CDMA systems for broadband wireless services. One of the major problems in OFDM systems is nonlinear distortion caused by high-power amplifiers. In this paper, the effect of non-perfect power amplification on OFDM-CDMA systems is examined. Simulation results show that, with an ideally linearized amplifier, the performance of OFDM-CDMA systems can be improved over an AWGN channel. In general, OFDM-CDMA systems perform better than OFDM systems with non-ideal power amplification, by using a simple code word assignment scheme.

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