Frequency shift based multiple access interference canceller for DS-CDMA systems

Author

Gonçalves, Luis ; Silva, Adão ; Gameiro, Atilio

Author_Institution

Instituto de Telecomunicacoes, Universitario de Santiago, Aveiro, Portugal

Volume

4

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

2475

Abstract

The cyclostationary properties of direct sequence spread spectrum signals are well known. These cyclostationary properties imply a redundancy between frequency components separated by multiples of the symbol rate. We present a multiple access interference canceller that explores this property and applies it to UMTS-TDD. This frequency domain canceller acts on the spread signal in such a way that minimizes the interference and noise at its output (minimum mean squared error criterium). The performance is evaluated in two detector configurations: one including the frequency shift canceller (FSC) and the other plus a parallel interference canceller (PIC). The results are benchmarked against the performance of the conventional RAKE detector and the conventional PIC detector

Keywords

cellular radio; code division multiple access; interference suppression; least mean squares methods; radiofrequency interference; spread spectrum communication; time division multiplexing; DS-CDMA; RAKE detector; UMTS-TDD; cyclostationary properties; direct sequence spread spectrum signals; frequency shift canceller; minimum mean square error criterion; multiple access interference canceller; parallel interference canceller; third generation cellular systems; Band pass filters; Bandwidth; Detectors; Frequency; Interference cancellation; Multiaccess communication; Multiple access interference; Pulse modulation; Pulse shaping methods; Redundancy;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th

Conference_Location

Atlantic City, NJ

ISSN

1090-3038

Print_ISBN

0-7803-7005-8

Type

conf

DOI

10.1109/VTC.2001.957195

Filename

957195