Frequency-Domain Multiuser Detection for CP-Assisted DS-CDMA Signals

Author

Silva, Paulo ; Dinis, Rui

Author_Institution

ISR-IST, Tech. Univ. Lisbon

Volume

5

fYear

2006

fDate

7-10 May 2006

Firstpage

2103

Lastpage

2108

Abstract

In this paper we consider the use of CP-assisted (cyclic prefix) DS-CDMA schemes (direct sequence code division multiple access) in broadband wireless systems. We present an iterative, frequency-domain MUD (multiuser detection) receiver for the uplink transmission that combines IB-DFE (iterative block decision feedback equalization) principles with serial interference cancellation. It is shown that the performance proposed receiver can be close to the single-user MFB (matched filter bound), even for fully loaded systems, in severely time-dispersive channel and/or in the presence of strong interfering signals

Keywords

broadband networks; code division multiple access; decision feedback equalisers; dispersive channels; frequency-domain analysis; iterative methods; matched filters; multiuser detection; radio links; radiofrequency interference; spread spectrum communication; CP-assisted DS-CDMA signals; broadband wireless systems; cyclic prefix; direct sequence code division multiple access; frequency-domain multiuser detection; iterative block decision feedback equalization; matched filter bound; multiuser detection receiver; serial interference cancellation; strong interfering signals; time-dispersive channel; uplink transmission; Bit rate; Decision feedback equalizers; Direct-sequence code-division multiple access; Feedback loop; Fluctuations; Interference cancellation; Matched filters; Multiaccess communication; Multiuser detection; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd

Conference_Location

Melbourne, Vic.

ISSN

1550-2252

Print_ISBN

0-7803-9391-0

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2006.1683227

Filename

1683227