Title :
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
fDate :
March 31 2008-April 4 2008
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;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2008.4518293
