Performance analysis of MAI canceller combined with adaptive array antenna for DS-CDMA

Author

Yano, Kazuto ; Hirose, Shouichi ; Murata, Hidekazu ; Yoshida, Susumu

Author_Institution

Graduate Sch. of Informatics, Kyoto Univ., Japan

Volume

3

fYear

2001

fDate

2001

Firstpage

1819

Abstract

The capacity of a DS-CDMA system is limited by multiple access interference (MAI). In order to suppress MAI effectively, a receiver integrating an adaptive array antenna and a successive MAI canceller has been proposed. In this paper, the performance of the receiver to analyzed which consists of a circular antenna array and a serial/parallel canceller by computer simulations. Substantial performance improvement is confirmed by combining an antenna array and an MAI canceller. Further improvement is observed by increasing the number of RAKE fingers used in the MAI canceller part. In addition, to prevent undesirable antenna beam forming for the dominant paths contributing to RAKE combining, these paths are excluded in advance from the signals used for generating antenna weights. This is shown to be effective in the higher E_b/N₀ region

Keywords

adaptive antenna arrays; array signal processing; code division multiple access; interference suppression; planar antenna arrays; radio receivers; radiofrequency interference; spread spectrum communication; DS-CDMA; MAI canceller; RAKE combining; RAKE fingers; adaptive array antenna; antenna beam forming; antenna weights; capacity; circular antenna array; dominant paths; multiple access interference; serial/parallel canceller; Adaptive arrays; Antenna arrays; Computer simulation; Fingers; Multiaccess communication; Multiple access interference; Performance analysis; RAKE receivers; Receiving antennas; Signal generators;

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.2001.945008

Filename

945008