Channel estimation based on coded pilot for OFDM

Author

H´Mimy, Hossam H.

Author_Institution

Wireless Eng. Technol., Ericsson Inc., Richardson, TX, USA

Volume

3

fYear

1997

fDate

4-7 May 1997

Firstpage

1375

Abstract

The multipath fast frequency selective fading channel is estimated using coded pilot, based on DS-SS, for orthogonal frequency division multiplexing (CP-OFDM). The effect of the channel is equalized using channel inversion and channel estimation with maximum likelihood sequence estimation (CE-MLSE). The performance of unfaded coded pilot OFDM is derived for AWGN. The performance of channel inversion and CE-MLSE are simulated for multipath fast fading channels. The coded pilot estimation occurs at the same instant that the signal undergoes the fading effect which makes it suitable for fast fading channels

Keywords

Gaussian noise; equalisers; estimation theory; fading; frequency division multiplexing; maximum likelihood estimation; multipath channels; personal communication networks; pseudonoise codes; spread spectrum communication; white noise; AWGN; CE-MLSE; DS-SS; FDM; channel equalization; channel estimation; channel inversion; coded pilot; maximum likelihood sequence estimation; multipath fast frequency selective fading channel; orthogonal frequency division multiplexing; performance; personal communications; unfaded coded pilot OFDM; Bandwidth; Channel estimation; Digital audio broadcasting; Equalizers; Fading; Frequency estimation; Frequency response; Least squares approximation; Maximum likelihood estimation; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1997, IEEE 47th

Conference_Location

Phoenix, AZ

ISSN

1090-3038

Print_ISBN

0-7803-3659-3

Type

conf

DOI

10.1109/VETEC.1997.605432

Filename

605432