Estimation of numbers of multipaths in DS-CDMA by the MDL principle

Author

SAARNISAARI, Harri

Author_Institution

Telecommun. Lab., Oulu Univ., Finland

Volume

1

fYear

1998

fDate

2-4 Sep 1998

Firstpage

258

Abstract

In DS-CDMA systems the optimal maximum likelihood and some sub-optimal multiuser receivers require that the delays of all active users are known. This means that the numbers of multipaths also have to be known. In this paper it is discussed how the numbers of multipaths, can be estimated by the minimum description length (MDL) principle. The suggested method gives estimates for both the numbers of multipaths and delays. Simulation results are provided to give a brief idea of the method´s performance. Some alternative MDL based procedures are also suggested

Keywords

code division multiple access; delay estimation; maximum likelihood estimation; multipath channels; multiuser channels; radio receivers; spread spectrum communication; DS-CDMA; MDL principle; delay estimation; minimum description length; multipath estimation; optimal maximum likelihood; performance; simulation results; sub-optimal multiuser receivers; Delay effects; Delay estimation; Laboratories; Maximum likelihood estimation; Multiaccess communication; Parameter estimation; Probability density function; Propagation delay; Tail;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on

Conference_Location

Sun City

Print_ISBN

0-7803-4281-X

Type

conf

DOI

10.1109/ISSSTA.1998.726238

Filename

726238