Title :
Linear Multiuser Detection for Asynchronous CDMA Systems: Chip Pulse Design and Time Delay Distribution
Author :
Cottatellucci, Laura ; Debbah, Mérouane ; Müller, Ralf R.
Author_Institution :
University of South Australia, Mawson Lakes Boulevard, Adelaide, Australia, Email: laura.cottatellucci@unisa.edu.au
Abstract :
The large system performance analysis of linear multiuser detectors (e.g. MMSE, MSWF, multistage detectors) for asynchronous CDMA systems is provided. While the performance of synchronous systems with square-root waveforms is independent of the chip bandwidth, the performance of asynchronous systems depends on the pulse shape and the bandwidth. It increases as the bandwidth increases beyond half on the chip rate and, in such a case, asynchronous systems outperform the synchronous ones.
Keywords :
Bandwidth; Delay effects; Detectors; Low pass filters; Matched filters; Multiaccess communication; Multiuser detection; Nonlinear filters; Performance analysis; Signal to noise ratio;
Conference_Titel :
Information Theory Workshop, 2006. ITW '06 Punta del Este. IEEE
Conference_Location :
Punta del Este, Uruguay
Print_ISBN :
1-4244-0035-X
Electronic_ISBN :
1-4244-0036-8
DOI :
10.1109/ITW.2006.1633832
