A Multiuser Receiver for CDMA Systems with Parity Bit Selected Spreading Sequences

Author

Mirzaee, Alireza ; D´Amours, Claude

Author_Institution

Sch. of Inf. Technol. & Eng., Univ. of Ottawa, Ottawa, ON, Canada

fYear

2010

fDate

6-9 Sept. 2010

Firstpage

1

Lastpage

4

Abstract

In this paper we propose a multiuser receiver using multistage detection and interference cancellation for direct-sequence code-division multiple-access (DS/CDMA) systems with parity bit selected spreading sequences in synchronous channels. In a CDMA system with parity bit selected spreading sequences (CDMA/PB), the spreading code used by each user depends on the transmitted data bits and it is selected from a set of mutually orthogonal spreading waveforms allocated to each user. Multistage parallel interference cancellation (PIC) detector is used to estimate and subtract out all multiple-access interference (MAI) for each user in parallel. The performance of the proposed system is compared with the conventional uncoded CDMA systems.

Keywords

code division multiple access; interference suppression; multiuser detection; spread spectrum communication; CDMA/PB; DS/CDMA systems; MAI; PIC detector; direct-sequence code-division multiple-access; multiple-access interference; multistage detection; multistage parallel interference cancellation; multiuser receiver; mutually orthogonal spreading waveforms; parity bit selected spreading sequences; spreading code; synchronous channels; uncoded CDMA systems; Bit error rate; Fading; Interference cancellation; Matched filters; Multiaccess communication; Receivers; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd

Conference_Location

Ottawa, ON

ISSN

1090-3038

Print_ISBN

978-1-4244-3573-9

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2010.5594403

Filename

5594403