Title :
Equalization for orthogonal frequency division multiplexing system
Author :
Siala, Mohamed ; Kaleh, Ghassan Kawas
Author_Institution :
Ecole Nat. Superieure des Telecommun., Paris, France
Abstract :
Multipath distortion in a digital mobile channel can be alleviated by using the orthogonal frequency division multiplexing system in which the discrete Fourier transform is used for multiplexing N subchannels. Albeit every subchannel is subject to a flat fading, the difference in fading level results in intersymbol interference. Five equalization methods are studied, and their performance is compared. It is concluded that the minimum-mean-squared-error block linear equalizer is a good compromise between complexity and performance
Keywords :
computational complexity; digital radio; discrete Fourier transforms; equalisers; fading; frequency division multiplexing; intersymbol interference; land mobile radio; least mean squares methods; multipath channels; radiofrequency interference; complexity; digital mobile channel; discrete Fourier transform; equalization methods; flat fading; intersymbol interference; minimum-mean-squared-error block linear equalizer; orthogonal frequency division multiplexing; performance; Covariance matrix; Detectors; Equalizers; Equations; Error probability; Fading; Noise reduction; OFDM; Signal to noise ratio; Symmetric matrices;
Conference_Titel :
Vehicular Technology Conference, 1993., 43rd IEEE
Conference_Location :
Secaucus, NJ
Print_ISBN :
0-7803-1267-8
DOI :
10.1109/VETEC.1993.508775
