Adaptive channel estimation using cyclic prefix in multicarrier modulation system

Author

Wang, Xiaowen ; Liu, K. J Ray

Author_Institution

Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA

Volume

3

Issue

10

fYear

1999

Firstpage

291

Lastpage

293

Abstract

Multicarrier modulation (MCM) is a promising technique for high rate data transmission and the channel estimation is very important for the implementation of MCM. We found that the cyclic prefix, originally used solely to reduce the intersymbol interference (ISI), can be viewed as a source of channel information. Based on this observation, we propose an adaptive channel estimation algorithm using the cyclic prefix. This algorithm can adaptively track the channel variation without additional training sequences.

Keywords

adaptive estimation; data communication; identification; interference suppression; intersymbol interference; modulation; time-varying channels; DFT; ISI reduction; QAM constellation; adaptive channel estimation algorithm; channel identification algorithm; channel information; channel variation tracking; cyclic prefix; deterministic least squares; high rate data transmission; intersymbol interference; multicarrier modulation system; time varying channel; Channel estimation; Data communication; Discrete Fourier transforms; Equalizers; Frequency response; Intersymbol interference; Partitioning algorithms; Performance loss;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.798021

Filename

798021