Performance Analysis of COFDM for Broadband Transmission on a Fading Multipath Channel

Authors:
A. G. Burr
Affiliations:
University of York, York YO1 5DD, U.K. alister@ohm.york.ac.uk
Venue:
Wireless Personal Communications: An International Journal
Year:
1999

Citing 0
Cited 2

Performance of Frequency-Time MMSE Equalizer for MC-CDMA over Multipath Fading Channel

Wireless Personal Communications: An International Journal
OFDM system under the combined effect analysis of the phase noise, carrier frequency offset, Doppler spread, and amplifier nonlinearity of the SEL

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Abstract

This paper gives a unified analysis of the effects of multipath dispersion and Doppler spreading due to fast fading in OFDM systems, deriving simple closed-form expressions for intersymbol and interchannel interference in the most important cases. It shows also why sine wave carriers are in general the optimum bearers for the sub-channels. The expressions for interference are used to estimate the BER performance of coded OFDM, showing that the use of forward error correction (FEC) coding and a guard period are both essential for optimum performance. As an example it is shown that a 64 sub-channel OFDM system can achieve a data rate of 6.4 Mbit/s on a typical urban mobile radio channel.