An efficient multipath channel estimator for DS-CDMA systems

Author

Ye, Getian ; Bi, Guoan

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore

Volume

3

fYear

1999

fDate

1999

Firstpage

1613

Abstract

In this paper, we consider maximum likelihood estimation of multipath channel parameters in asynchronous direct-sequence code-division multiple access communication systems. The proposed algorithm is based on the training sequence which is transmitted by the desired user. By modeling the interfering signals as unknown colored Gaussian noise, the multiuser estimation problem is decomposed into a series of single user problems. Simulation results show that the proposed estimator is efficient and robust against the near-far problem and channel fading

Keywords

Gaussian noise; code division multiple access; fading channels; land mobile radio; maximum likelihood estimation; multipath channels; multiuser channels; radiofrequency interference; spread spectrum communication; DS-CDMA systems; asynchronous direct-sequence code-division multiple access; channel fading; interfering signals; maximum likelihood estimation; multipath channel estimator; multipath channel parameters; multiuser estimation problem; near-far problem; single user problems; training sequence; unknown colored Gaussian noise; Direct-sequence code-division multiple access; Fading; Gaussian noise; Maximum likelihood estimation; Multiaccess communication; Multipath channels; Multiple access interference; Parameter estimation; Propagation delay; Pulse modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1999. ICC '99. 1999 IEEE International Conference on

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-5284-X

Type

conf

DOI

10.1109/ICC.1999.765502

Filename

765502