A multi-slot method to estimate fast-varying channels in TD-CDMA systems

Author

Nicoli, Monica ; Simeone, Osvaldo ; Spagnolini, Umberto

Author_Institution

Dip. Elettron. e Inf., Politec. di Milano, Milan, Italy

fYear

2002

fDate

3-6 Sept. 2002

Firstpage

1

Lastpage

4

Abstract

In mobile communications, the multipath radio channel is characterized by fast-varying faded amplitudes and slowly-varying delays. These different varying rates can be exploited by estimating the temporal subspace of the channel through a multi-slot averaging. This paper proves that the temporal subspace basis can be calculated with any accuracy (provided that the averaging memory is large enough), so that the mean square error (MSE) on the channel response depends only on the number of fast-varying parameters. The method shows promising benefits in the channel estimation for time slotted system such as the third generation TD-CDMA standards (TDD-UTRA [1] or TD-SCDMA [2]).

Keywords

channel estimation; code division multiple access; mean square error methods; mobile communication; multipath channels; time division multiple access; wireless channels; MSE; TD-CDMA system; channel response; channel temporal subspace estimation; code division multiple access; fast-varying faded amplitude; mean square error method; mobile communication; multipath radio channel; multislot method; slowly-varying delay; time division multiple access; time slotted system; Abstracts; Phase shift keying; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2002 11th European

Conference_Location

Toulouse

ISSN

2219-5491

Type

conf

Filename

7072202