Performance of OFDM receivers in presence of nonlinear power amplifiers

Author

Eslami, M. ; Shafiee, H.

Author_Institution

Dept. of Electr. & Comput. Eng., Tehran Univ., Iran

Volume

1

fYear

2002

fDate

25-28 Nov. 2002

Firstpage

219

Abstract

The nonlinear response of power amplifiers in radio transmitters affects the bit error rate performance of OFDM communication systems. We study traveling wave tube and soft-limiter amplifiers, and obtain bit-error rates of an OFDM system using analytical techniques as well as computer simulation when the operation of the receiver blocks is taken into account. This is done with and without a predistorter in the transmitter. Computer simulations are done for a communication system designed based on the IEEE 802.11a standard for wireless local area networks. Good agreement between the predicted analytical values and simulation results are obtained, especially at high channel SNRs.

Keywords

IEEE standards; OFDM modulation; error statistics; limiters; power amplifiers; radio receivers; radio transmitters; radiofrequency amplifiers; telecommunication standards; travelling wave amplifiers; wireless LAN; BER performance; IEEE 802.11a standard; OFDM communication systems; OFDM receiver performance; bit error rate performance; computer simulation; computer simulations; high channel SNR; nonlinear power amplifiers; nonlinear response; radio transmitters; soft-limiter amplifier; transmitter predistorter; traveling wave tube amplifier; wireless local area networks; Bit error rate; Communication standards; Computational modeling; Computer simulation; OFDM; Operational amplifiers; Power amplifiers; Radio transmitters; Receivers; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, 2002. ICCS 2002. The 8th International Conference on

Print_ISBN

0-7803-7510-6

Type

conf

DOI

10.1109/ICCS.2002.1182469

Filename

1182469