The influence of the channel estimation error on the closed loop transmit diversity algorithms performance

Author

Novakovic, Dejan M. ; Juntti, Markku J. ; Dukic, Miroslav L.

Author_Institution

Centre for Wireless Commun., Oulu Univ., Finland

Volume

3

fYear

2002

fDate

15-18 Sept. 2002

Firstpage

1427

Abstract

In this paper the influence of the channel estimation error on the performance of the closed loop Tx diversity algorithms for WCDMA is studied for a high number of Tx antennas. The analysed algorithms are generalised closed loop Tx diversity, all-antenna Tx diversity and one-antenna selection Tx diversity. It was shown that generalised closed loop Tx diversity algorithm is more robust to channel estimation errors that all-antenna Tx diversity algorithm. This is valid for both uncorrelated fading and for correlated fading between Tx antennas. The one-antenna selection Tx diversity algorithm is also robust to the channel estimation errors, but its performance is worse than that of generalised closed loop Tx diversity algorithm.

Keywords

3G mobile communication; channel estimation; closed loop systems; correlation methods; diversity reception; error analysis; fading channels; radio access networks; transmitting antennas; UMTS Terrestrial Radio Access Network; WCDMA; all-antenna transmit diversity; channel estimation error; closed loop transmit diversity algorithms performance; correlated fading; generalised closed loop transmit diversity; one-antenna selection transmit diversity; performance; transmit antennas; uncorrelated fading; Algorithm design and analysis; Antennas and propagation; Base stations; Channel estimation; Downlink; Fading; Mobile antennas; Multiaccess communication; Receiving antennas; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on

Print_ISBN

0-7803-7589-0

Type

conf

DOI

10.1109/PIMRC.2002.1045264

Filename

1045264