Input sequence estimation and blind channel identification in HF communication

Author

Khames, M. ; Miled, B.H. ; Arikan, Orhan

Author_Institution

Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara, Turkey

Volume

5

fYear

2000

fDate

2000

Firstpage

2705

Abstract

A new algorithm is proposed for reliable communication over HF tropospheric links in the presence of rapid channel variations. In the proposed approach, using fractionally spaced channel outputs, sequential estimation of channel characteristics and input sequence is performed by utilizing subspace tracking and Kalman filtering. Simulation based comparisons with the existing algorithms show that the proposed approaches significantly improve the performance of the communication system and enable us to utilize HF communication in bad conditions

Keywords

HF radio propagation; Kalman filters; blind equalisers; multipath channels; radio links; sequential estimation; time-varying channels; tropospheric electromagnetic wave propagation; HF communication; HF tropospheric links; Kalman filtering; blind channel identification; fractionally spaced channel outputs; input sequence estimation; rapid channel variations; sequential estimation; subspace tracking; Additive noise; Atmospheric modeling; Baseband; Equalizers; Filtering; Iterative algorithms; Kalman filters; Reliability engineering; State estimation; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on

Conference_Location

Istanbul

ISSN

1520-6149

Print_ISBN

0-7803-6293-4

Type

conf

DOI

10.1109/ICASSP.2000.861045

Filename

861045