Adaptive beamforming of uniform circular arrays (UCA) for wireless CDMA system

Author

Tsai, Jiann-An ; Woerner, Brian D.

Author_Institution

Mobile & Portable Radio Res. Group, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

1

fYear

2001

fDate

4-7 Nov. 2001

Firstpage

399

Abstract

We evaluate the performance of adaptive beamforming using uniform circular antenna arrays for wireless CDMA systems. Two types of uniform circular array systems are considered: phased arrays and diversity arrays. For a phased array, the circle of radius of the uniform circular array (UCA) is less than one half wavelength; for a diversity array, the circle of radius is greater than one half wavelength. The adaptive beamforming performance is evaluated based on bit-error-rate (BER) simulation. The effects of angle spread and the distribution of user´s location are considered for both AWGN and Rayleigh fading channels.

Keywords

AWGN channels; Rayleigh channels; antenna phased arrays; array signal processing; cellular radio; code division multiple access; diversity reception; error statistics; least mean squares methods; 3G systems; 4G systems; AWGN channels; BER; MMSE beamforming; Rayleigh fading channels; adaptive beamforming; angle spread; bit-error-rate; diversity arrays; phased arrays; uniform circular antenna arrays; wireless CDMA; AWGN; Adaptive arrays; Antenna arrays; Array signal processing; Bit error rate; Fading; Impedance; Multiaccess communication; Phased arrays; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-7147-X

Type

conf

DOI

10.1109/ACSSC.2001.986958

Filename

986958