TY - GEN
T1 - OFDM-CDMA systems with nonlinear power amplifier
AU - Li, Junsong
AU - Kavehrad, Mohsen
PY - 1999/1/1
Y1 - 1999/1/1
N2 - 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.
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.
UR - http://www.scopus.com/inward/record.url?scp=84907552563&partnerID=8YFLogxK
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U2 - 10.1109/WCNC.1999.796903
DO - 10.1109/WCNC.1999.796903
M3 - Conference contribution
AN - SCOPUS:84907552563
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 1167
EP - 1171
BT - 1999 IEEE Wireless Communications and Networking Conference, WCNC
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1st IEEE Annual Wireless Communications and Networking Conference, WCNC 1999
Y2 - 21 September 1999 through 24 September 1999
ER -