Blind channel identification and equalization for GI-less OFDM systems

Author

Alayyan, Faisal O. ; Leung, Yee Hong ; Zoubir, Abdelhak M. ; Shubair, Raed M. ; Alketbi, Omar

Author_Institution

Technol. & Res., Khalifa Univ. of Sci., Sharjah

fYear

2008

fDate

24-27 Nov. 2008

Firstpage

1

Lastpage

5

Abstract

We introduce blind channel identification and equalization for orthogonal frequency division multiplexing (OFDM) system without using a guard interval (GI). Inter-symbol-interference (ISI) is significantly reduced by truncation method. To perform channel identification, Subspace and Maximum Likelihood methods are proposed. To achieve enhanced performance and robustness to channel frequency nulls, receiver diversity and OFDM is combined. The performance of the proposed system is illustrated by computer simulations.

Keywords

OFDM modulation; blind equalisers; intersymbol interference; maximum likelihood estimation; receivers; blind channel equalization; blind channel identification; channel frequency nulls; guard interval-less OFDM; intersymbol interference; maximum likelihood method; orthogonal frequency division multiplexing; receiver diversity; subspace method; truncation method; Bandwidth; Blind equalizers; Delay; Digital video broadcasting; Intersymbol interference; Maximum likelihood estimation; Multimedia systems; OFDM; Transmitters; Wireless LAN; GI-less; OFDM; channel identification; equalization;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Days, 2008. WD '08. 1st IFIP

Conference_Location

Dubai

Print_ISBN

978-1-4244-2828-1

Electronic_ISBN

978-1-4244-2829-8

Type

conf

DOI

10.1109/WD.2008.4812827

Filename

4812827