Synchronisation error resistant multiuser detection for asynchronous CDMA

Author

Zheng, F.-C.

Author_Institution

Sch. of Commun. & Informatics, Victoria Univ. of Technol., Melbourne, Vic., Australia

Volume

3

fYear

2001

fDate

2001

Firstpage

1755

Abstract

Linear CDMA detectors have emerged as a promising solution to multiple access interference (MAI) suppression. Unfortunately, most existing linear detectors suffer from high sensitivity to synchronisation errors (also termed parameter estimation error), and synchronisation error resistant detectors have so far not been as widely investigated as they should have. This paper extends the minimum variance distortionless response (MVDR) detector, proposed previously by this author (Zheng 2000) for synchronous systems, to asynchronous systems. It has been shown that the MVDR structure is equally effective for asynchronous systems, especially for the weaker users

Keywords

code division multiple access; interference suppression; multiuser channels; parameter estimation; receivers; signal detection; spread spectrum communication; synchronisation; MAI suppression; MVDR detector; asynchronous CDMA; minimum variance distortionless response detector; multiple access interference; parameter estimation error; synchronisation error resistant multiuser detection; Detectors; Frequency estimation; Frequency synchronization; Integrated circuit noise; Matched filters; Multiaccess communication; Multiple access interference; Multiuser detection; Parameter estimation; Phase estimation;

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.2001.944995

Filename

944995