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OFDM-CDMA systems with nonlinear power amplifier

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2 Author(s)
Junsong Li ; CICTR, Pennsylvania State Univ., University Park, PA, USA ; Kavehrad, Mohsen

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

Published in:

Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE

Date of Conference:

1999

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