ICI cancellation method for OFDM systems using compressed sensing based channel estimation

Author

Ma, Ziji ; Sato, Tomonori ; Okada, Minoru ; Furudate, Hideki

Author_Institution

Grad. Sch. of Inf. Sci., NAIST, Nara, Japan

fYear

2011

fDate

7-9 Dec. 2011

Firstpage

1

Lastpage

5

Abstract

The time-varying multipath fading causes the intercarrier interference (ICI) that destroys the orthogonality between the subcarriers for orthogonal frequency division multiplexing (OFDM) systems. In this paper, we propose an iterative equalization method using channel estimation based on compressed sensing (CS) that can be used to optimize and reconstruct the channel state information (CSI) for sparse channel. Simulation results demonstrate that the proposed method significantly improves the system performance, comparing with the conventional Least Square (LS) methods.

Keywords

OFDM modulation; channel estimation; data compression; equalisers; intercarrier interference; interference suppression; iterative methods; ICI cancellation method; LS method; OFDM systems; channel estimation; channel state information; compressed sensing; intercarrier interference; iterative equalization method; least square method; orthogonal frequency division multiplexing systems; sparse channel; time-varying multipath fading; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communications Systems (ISPACS), 2011 International Symposium on

Conference_Location

Chiang Mai

Print_ISBN

978-1-4577-2165-6

Type

conf

DOI

10.1109/ISPACS.2011.6146095

Filename

6146095