Applications of Maximum Likelihood Algorithm in Asynchronous CDMA Systems
Paper in proceedings, 2002

In this paper, we treat the problems of propagation delay and channel estimation as well as data detection of orthogonally modulated signals in asynchronous DS-CDMA system over fading channels using the maximum likelihood (ML) approach. The overwhelming computational complexity of the ML algorithm makes it unfeasible for implementation. The emphasis of this paper is to reduce its complexity by some approximation methods. The derived approximative ML schemes are compared with conventional algorithms as well as some others, e.g., the PIC for data detection and the subspace-based algorithm for acquisition.

cdma

Author

Pei Xiao

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Erik Ström

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

2002 IEEE SEVENTH INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES AND APPLICATIONS, ISSSTA'2002, SEP 02-05, Prague, Czech Republic

Vol. 1 208-213

Subject Categories

Computer and Information Science

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Created

10/6/2017