Title :
Frequency shift based multiple access interference canceller for multirate UMTS-TDD systems
Author :
Gonçalves, Luis ; Gameiro, Atilio
Author_Institution :
Instituto de Telecomunicacoes, Universitario de Santiago, Aveiro, Portugal
Abstract :
Direct sequence spread spectrum (DS-SS) signals exhibit cyclostationary properties which imply a redundancy between frequency components separated by multiples of the symbol rate. In this paper we present a multiple access interference canceller that explores this property and applies to UMTS-TDD This frequency domain canceller operates in the spreading signal in such way that the interference and noise at its output is minimized (minimum mean squared error criterion). The performance is evaluated in two configurations: one including the frequency shift canceller (FSC) and the other concatenated with the parallel interference canceller (PIC). The results are benchmarked against the performance of the conventional RAKE detector and the conventional PIC detector.
Keywords :
3G mobile communication; code division multiple access; frequency-domain analysis; interference suppression; least mean squares methods; redundancy; spread spectrum communication; time division multiplexing; CDMA; DS-SS signals; UMTS-TDD; concatenation; cyclostationary properties; direct sequence spread spectrum signals; frequency domain canceller; frequency shift canceller; interference minimization; minimum mean squared error criterion; multiple access interference canceller; parallel interference canceller; performance evaluation; redundancy; spreading signal; Detectors; Frequency; Interference cancellation; Multiaccess communication; Multiple access interference; Power capacitors; Pulse modulation; Radio communication; Spread spectrum communication; Time division multiple access;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on
Print_ISBN :
0-7803-7589-0
DOI :
10.1109/PIMRC.2002.1046517
