Analysis of OFDM Receiver with Insufficient Guard Interval

Author

Zhang, Zhonghao ; Li, Baojin ; Chang, Yongyu ; Yang, Dacheng

Author_Institution

Wireless Theor. & Technol. Lab. (WT&T), Beijing Univ. of Posts & Telecommun., Beijing

fYear

2009

fDate

5-8 April 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, we propose a novel receiver consists of the Inter Symbol Interference (ISI) canceller and the turbo equalizer for orthogonal frequency division multiplexing (OFDM) systems over frequency selective fading channels where the multipath delay exceeds the guard interval duration. The proposed turbo equalization algorithm performs soft Inter Carrier Interference (ICI) cancellation and frequency domain minimum mean-square error (MMSE) filtering to minimize the performance degradation caused by ICI distortion and frequency-selective channels. Simulation results of the system performance show that the proposed receiver effectively recovers the contaminated OFDM signals.

Keywords

OFDM modulation; equalisers; fading channels; intercarrier interference; intersymbol interference; radio receivers; ICI cancellation; ISI canceller; OFDM receiver; OFDM systems; frequency domain minimum mean-square error filtering; frequency selective fading channel; insufficient guard interval; intercarrier interference; intersymbol interference; multipath delay; orthogonal frequency division multiplexing; turbo equalizer; Degradation; Delay; Equalizers; Fading; Filtering algorithms; Frequency domain analysis; Interference cancellation; Intersymbol interference; OFDM; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE

Conference_Location

Budapest

ISSN

1525-3511

Print_ISBN

978-1-4244-2947-9

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2009.4917593

Filename

4917593