Interference suppression capability of linear receivers for band-limited DS/SSMA communications

Author

Jeong, Yeon K. ; Cho, Joon Ho ; Lehnert, James S.

Author_Institution

Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA

Volume

2

fYear

2002

fDate

7-10 Oct. 2002

Firstpage

1325

Abstract

Interference suppression capabilities of linear receivers for band-limited direct-sequence spread-spectrum multiple-access (DS/SSMA) systems with aperiodic random spreading sequences are considered. First, bounds on the performance of systems with BPSK data symbols and QPSK spreading sequences are derived for fixed matched filter (MF) receivers and adaptive linear receivers. The bounds apply for the case in which the maximum conditional signal-to-interference ratio is obtained or, equivalently, for the case in which the linear minimum-mean-squared error (MMSE) criterion is used. The bounds are used to examine the dependence of the capability of the linear receivers to suppress multiple-access interference (MAI) on the system excess bandwidth and the profile of multiple-access users.

Keywords

bandlimited communication; interference suppression; least mean squares methods; matched filters; military communication; mobile radio; multi-access systems; quadrature phase shift keying; radio receivers; spread spectrum communication; BPSK data symbols; DS/SSMA; MAI; QPSK spreading sequences; adaptive linear receivers; aperiodic random spreading sequences; band-limited communications; direct-sequence spread-spectrum multiple-access; fixed matched filter receivers; interference suppression; linear MMSE; maximum conditional signal-to-interference ratio; military communication; minimum-mean-squared error; multiple-access interference; performance bounds; system excess bandwidth; user profile; Background noise; Binary phase shift keying; Interference suppression; Matched filters; Multiple access interference; Propagation delay; Quadrature phase shift keying; Signal design; Signal to noise ratio; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

MILCOM 2002. Proceedings

Print_ISBN

0-7803-7625-0

Type

conf

DOI

10.1109/MILCOM.2002.1179672

Filename

1179672