Convergence and stability analysis of a synchronous adaptive CDMA-based PCS receiver

Author

Zhu, Bin ; Ansari, Nirwan ; Siveski, Zoran ; Bar-Ness, Yeheskel

Author_Institution

Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA

fYear

1994

fDate

2-5 Oct 1994

Firstpage

923

Abstract

A thorough investigation on the convergence and stability of an adaptive synchronous CDMA receiver is presented. The receiver consists of a decorrelator at the first stage and an adaptive interference canceler at the second stage. By using a steepest descent algorithm to adaptively control the weights, the knowledge of the users´ received powers is no longer required. It is shown that the system has good “near-far” resistance, and can approach optimum performance when the interfering users SNRs are high. Sufficient conditions for the receiver to achieve convergence are derived, and their properties are analyzed

Keywords

adaptive signal detection; code division multiple access; convergence; correlation methods; interference suppression; personal communication networks; radio receivers; radiofrequency interference; stability; adaptive interference canceler; convergence; decorrelator; interfering users; near-far resistance; optimum performance; received power; stability analysis; steepest descent algorithm; synchronous adaptive CDMA-based PCS receiver; Computational complexity; Convergence; Covariance matrix; Decorrelation; Detectors; Interference cancellation; Multiaccess communication; Performance analysis; Personal communication networks; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 1994. MILCOM '94. Conference Record, 1994 IEEE

Conference_Location

Fort Monmouth, NJ

Print_ISBN

0-7803-1828-5

Type

conf

DOI

10.1109/MILCOM.1994.473980

Filename

473980