Rapid converging adaptive interference suppression for direct-sequence code-division multiple-access systems

Author

Lee, Edward K B

Author_Institution

Land Mobile Products Sector. Res. Lab., Motorola Inc., USA

fYear

1993

fDate

29 Nov-2 Dec 1993

Firstpage

1683

Abstract

Rapid converging adaptive equalization algorithms for interference suppression in direct sequence code division multiple access (DS/CDMA) systems are presented. These adaptive algorithms, based on an orthogonal transformation, do not require a priori knowledge on interfering signals parameters such as spreading sequences and relative signal power levels. The convergent rate of these algorithms is independent of the eigen-value spread of the input data correlation matrix. The performance of these proposed rapid converging adaptive equalizers is investigated both in the absence and presence of frequency offsets among transmitters

Keywords

code division multiple access; convergence of numerical methods; equalisers; interference suppression; mobile radio systems; radiofrequency interference; spread spectrum communication; DS/CDMA; adaptive equalization algorithms; adaptive interference suppression; convergent rate; direct-sequence code-division multiple-access; eigen-value spread; frequency offsets; input data correlation matrix; mobile communication; orthogonal transformation; performance; transmitters; Adaptive algorithm; Adaptive equalizers; Eigenvalues and eigenfunctions; Frequency; Interference cancellation; Interference suppression; Least squares approximation; Multiaccess communication; Spread spectrum communication; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1993, including a Communications Theory Mini-Conference. Technical Program Conference Record, IEEE in Houston. GLOBECOM '93., IEEE

Conference_Location

Houston, TX

Print_ISBN

0-7803-0917-0

Type

conf

DOI

10.1109/GLOCOM.1993.318356

Filename

318356