Downlink channel covariance matrix (DCCM) estimation for FDD SDMA

Author

Liang, Ying-Chang ; Chin, Francois ; Kot, Alex

Author_Institution

Centre for Wireless Commun., Singapore, Singapore

Volume

4

fYear

2001

fDate

2001

Firstpage

2382

Abstract

The downlink channel covariance matrix (DCCM) is of vital importance in determining downlink beamforming weights for base station (BS) antenna array systems. For frequency-division-duplex (FDD) mode, DCCM is difficult to obtain due to lack of direct measurement of downlink channel responses. A novel technique is proposed for estimating DCCM using uplink channel responses only, which does not need DOA estimation and its association. The new technique is much simpler than the DOA-based approach and the GF algorithm

Keywords

antenna arrays; covariance matrices; mobile radio; space division multiple access; telecommunication switching; DCCM estimation; FDD; SDMA; antenna array systems; base station; beamforming weights; downlink channel covariance matrix; frequency division duplexing; mobile radio; uplink channel responses; Antenna arrays; Array signal processing; Base stations; Calibration; Covariance matrix; Direction of arrival estimation; Downlink; Frequency; Multiaccess communication; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944027

Filename

944027