Characterization of noncoherent spread-spectrum multiple-access communications

Author

Akinniyi, Akingbade R. ; Lehnert, James S.

Author_Institution

Motorola Inc., Arlington Heights, IL, USA

Volume

42

Issue

1

fYear

1994

fDate

1/1/1994 12:00:00 AM

Firstpage

139

Lastpage

148

Abstract

An expression for the decision statistic of the receiver in a noncoherent DS/SSMA communication system is obtained, and conditions are identified that allow key parameters in the expression to be modeled as a set of Gaussian random variables. The decision statistic is then characterized as an inhomogeneous quadratic form in Gaussian random variables. An applicable theorem is applied to obtain a new expression, a function of a set of independent Gaussian random variables, with the same distribution as the decision statistic. The results are used to determine the distribution for the decision statistic and to compute the average probability of error for the system. The effects of the length of the signature sequences and the number of interfering transmitters are illustrated

Keywords

error statistics; multi-access systems; radio receivers; radiofrequency interference; spread spectrum communication; stochastic processes; Gaussian random variables; average probability of error; decision statistic; inhomogeneous quadratic form; interfering transmitters; noncoherent DS/SSMA communication system; noncoherent spread-spectrum multiple-access communications; receiver; signature sequences; Density functional theory; Error analysis; Fading; Multiple access interference; Probability; Random variables; Spread spectrum communication; Statistical distributions; Statistics; Transmitters;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.275309

Filename

275309