Blind Estimation of Channel Length for OFDM Systems

Author

Sheng, Bin ; Wang, Xiangyang ; You, Xiaohu ; Chen, Lan

Author_Institution

Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

3

Abstract

In orthogonal frequency division multiplexing (OFDM) systems, multipath fading channels introduce interference between adjacent symbols. Although the interference degrades the system performance considerably, it also provides the information of channel impulse response (CIR) length to us. Therefore, based on the estimation of interference in the cyclic prefix (CP) interval, we can use the minimum description length (MDL) criterion to detect the channel length blindly.

Keywords

OFDM modulation; channel estimation; fading channels; multipath channels; radiofrequency interference; OFDM system; adjacent symbol; blind channel length estimation; channel impulse response; cyclic prefix interval; minimum description length criterion; multipath fading channel interference; orthogonal frequency division multiplexing; Bandwidth; Convolution; Degradation; Delay; Fading; Intersymbol interference; Laboratories; Mobile communication; OFDM; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5302154

Filename

5302154