Impact of the a priori channel state information on the performance of OFDM systems

Author

Ma, Junjie ; Geng, Nian ; Ping, Li

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong, China

fYear

2011

fDate

3-4 May 2011

Firstpage

1

Lastpage

5

Abstract

In this paper, we investigate the impact of the a priori channel state information (CSI) on the orthogonal frequency-division multiplexing (OFDM) system performance. A joint iterative channel estimation, detection and decoding receiver involving the dual diagonal linear-minimum-mean-square-error (DD-LMMSE) algorithm is employed. We show that the discrepancy between the a priori CSI and true CSI has a relatively benign impact. On the other hand, the position discrepancy can lead to significant performance loss.

Keywords

OFDM modulation; channel coding; channel estimation; least mean squares methods; radio receivers; DD-LMMSE algorithm; OFDM systems; a priori channel state information; channel detection; decoding receiver; dual diagonal linear-minimum-mean-square-error algorithm; joint iterative channel estimation; orthogonal frequency-division multiplexing system; Bit error rate; Channel estimation; Delay; Dispersion; Modulation; OFDM; Receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Multi-Carrier Systems & Solutions (MC-SS), 2011 8th International Workshop on

Conference_Location

Herrsching

Print_ISBN

978-1-61284-885-3

Electronic_ISBN

978-1-61284-886-0

Type

conf

DOI

10.1109/MC-SS.2011.5910730

Filename

5910730