Intercarrier interference cancellation scheme for OFDM communication systems

Author

Chuandan Wang ; Zhongpei Zhang ; Shaoqian Li ; Chuansheng Fu

Author_Institution

Nat. Key Lab Of Commun., Univ. of Electron. Sci. & Technol. of China, China

Volume

1

fYear

2004

Firstpage

344

Abstract

The paper studies an efficient ICI cancellation method termed segment equalization scheme. According to the time-variant nature of the mobile channel, the received OFDM signal and channel impulse response (CIR) are divided into many segments before FFT, then all the segments are equalized in the frequency-domain, the results are summed to demodulate the OFDM signal. Simulations and performance analysis show that an OFDM system using the proposed segment equalization can effectively reduce the ICI caused by the frequency offset and large Doppler frequencies in mobile radio channels.

Keywords

Doppler effect; OFDM modulation; equalisers; fast Fourier transforms; interference suppression; mobile radio; radiofrequency interference; transient response; Doppler frequencies; FFT; ICI cancellation; OFDM communication systems; channel impulse response; frequency offset; frequency-domain; intercarrier interference cancellation; mobile radio channels; segment equalization; Analytical models; Computational modeling; Frequency domain analysis; Interference cancellation; Land mobile radio; Mobile communication; OFDM modulation; Paper technology; Performance analysis; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on

Conference_Location

Chengdu

Print_ISBN

0-7803-8647-7

Type

conf

DOI

10.1109/ICCCAS.2004.1346089

Filename

1346089