Approximate ber expression of ML equalizer for OFDM over doubly selective channels

Author

Ohno, Shuichi ; Teo, Kok Ann Donny

Author_Institution

Dept. of ACSE, Hiroshima Univ., Higashi-Hiroshima

fYear

2008

fDate

March 31 2008-April 4 2008

Firstpage

3049

Lastpage

3052

Abstract

Maximum Likelihood (ML) equalization for Orthogonal Frequency Division Multiplexing (OFDM) over time- and frequency- selective channels is analyzed in this paper. An approximate expression for bit error rate (BER) performance of the ML equalizer with a limited number of taps is developed, which subsumes the matched filter bound (MFB) equalization performance as a special case, and which saves on intensive time-consuming empirical simulations. Numerical simulations validate our approximate expression.

Keywords

OFDM modulation; approximation theory; equalisers; error statistics; maximum likelihood estimation; OFDM; approximate BER expression; bit error rate; doubly selective channels; matched filter bound; maximum likelihood equalization; orthogonal frequency division multiplexing; time-frequency selective channel; Bit error rate; Equalizers; Intersymbol interference; Maximum likelihood detection; Multipath channels; Numerical simulation; OFDM; Oscillators; Time-varying channels; Transmitters; Maximum likelihood detection; Multipath channels; Time-varying channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on

Conference_Location

Las Vegas, NV

ISSN

1520-6149

Print_ISBN

978-1-4244-1483-3

Electronic_ISBN

1520-6149

Type

conf

DOI

10.1109/ICASSP.2008.4518293

Filename

4518293