Performance of the downlink multi-beam algorithm in TD-SCDMA system

Author

Shao-li, Kang ; Zheng-ding, Qiu

Author_Institution

Inst. of Inf. Sci., Northern Jiaotong Univ., Beijing, China

Volume

2

fYear

2002

fDate

26-30 Aug. 2002

Firstpage

1295

Abstract

Smart antennas (SA), which are able to resist intracell interference (MAI), act as the beamforming (BF) in the downlink of a TD-SCDMA system. Conventional single beam BF algorithms aim only at the strongest path, which loses the power diversity in the wireless multipath environment. In this paper, we propose a new beamforming algorithm, the multibeam algorithm, which makes a beam at each tap of the delay. By doing this, we can get diversity gain of different paths. Theory analysis and simulation results are consistent with each other and demonstrate the validity of this new algorithm.

Keywords

adaptive antenna arrays; array signal processing; cellular radio; cochannel interference; code division multiple access; diversity reception; interference suppression; multibeam antennas; multipath channels; time division multiple access; MAI suppression; TD-SCDMA system; beamforming algorithm; diversity gain; downlink multibeam algorithm; intracell interference; performance; smart antennas; wireless multipath environment; Algorithm design and analysis; Analytical models; Array signal processing; Delay; Downlink; Interference; Mobile antennas; Multiaccess communication; Resists; Time division synchronous code division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2002 6th International Conference on

Print_ISBN

0-7803-7488-6

Type

conf

DOI

10.1109/ICOSP.2002.1180029

Filename

1180029