Performance of QPSK/OFDM on Frequency-Selective Rayleigh Fading Channels

Jeong-Woo JWA

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Summary :

In this paper, we derive expressions for the bit error probability of QPSK/OFDM on frequency-selective Rayleigh fading channels. In the OFDM system, ICI (interchannel interference) caused by Doppler spread of the channel degrades the error performance of the system and introduces the error floor even for coherent detection. Analysis results show that the error performance of QPSK/OFDM can be degraded as the normalized maximum Doppler frequency fD /Bsub is increased where fD is the maximum Doppler frequency and Bsub is the subchannel bandwidth. Computer simulations confirm the theoretical analysis results for BPSK and QPSK signals.

Publication
IEICE TRANSACTIONS on Communications Vol.E87-B No.5 pp.1407-1411
Publication Date
2004/05/01
Publicized
Online ISSN
DOI
Type of Manuscript
LETTER
Category
Wireless Communication Technology

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