Low-complexity equalization of rapidly time-varying multi-path channels for OFDM systems

Author

Zhang, Han ; Dai, Xianhua ; Li, Dong

Author_Institution

Sch. of Phys. & Telecommun., South China Normal Univ., Guangzhou, China

fYear

2009

fDate

8-10 Dec. 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, we present a low-complexity equalizer for orthogonal frequency division multiplexing (OFDM) systems over rapidly time-varying multi-path channels. By taking advantage of the time-domain receiver windowing, the computational complexity of the equalization algorithm is linear in the number of sub-carriers and turns out to be smaller than the existing time-varying channel equalization methods. Simulations show that the proposed approach exhibits fairly robust to the time variation of channel.

Keywords

OFDM modulation; communication complexity; equalisers; radio receivers; time-varying channels; computational complexity; low-complexity equalization; low-complexity equalizer; orthogonal frequency division multiplexing systems; rapidly time-varying multipath channels; time-domain receiver windowing; Computational complexity; Computational modeling; Equalizers; Iterative methods; OFDM; Robustness; TV; Time domain analysis; Time varying systems; Time-varying channels; Equalization; OFDM systems; Rapidly Time-varying channel;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communications and Signal Processing, 2009. ICICS 2009. 7th International Conference on

Conference_Location

Macau

Print_ISBN

978-1-4244-4656-8

Electronic_ISBN

978-1-4244-4657-5

Type

conf

DOI

10.1109/ICICS.2009.5397645

Filename

5397645