Reference assisted coherent CDMA communication-an analytical treatment

Author

Ling, Fuyun

Author_Institution

Motorola Inc., Arlington Heights, IL, USA

Volume

2

fYear

1998

fDate

18-21 May 1998

Firstpage

1249

Abstract

Coherent spread spectrum communications with transmitted reference, also called pilot, based channel estimation is considered for asynchronous CDMA communication over fading channels. We derived the optimal receiver structure with a maximum likelihood (ML) convolutional decoder and the Bhattacharyya bound and the cut-off rate of the ML receiver. The analytical results are applied to evaluating the system performance and for selecting parameters such as coding rate and the data to reference power ratio that optimizes the system performance. Simulation results are also given and compared with the analytical results

Keywords

code division multiple access; convolutional codes; fading channels; maximum likelihood decoding; parameter estimation; radio receivers; spread spectrum communication; Bhattacharyya bound; DS-CDMA; ML receiver; analytical results; asynchronous CDMA; channel estimation; coding rate; coherent spread spectrum communications; cut-off rate; data to reference power ratio; fading channels; maximum likelihood convolutional decoder; optimal receiver structure; pilot; reference assisted coherent CDMA communication; simulation results; system performance evaluation; transmitted reference; Analytical models; Channel estimation; Convolutional codes; Fading; Maximum likelihood decoding; Maximum likelihood estimation; Multiaccess communication; Performance analysis; Spread spectrum communication; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1998. VTC 98. 48th IEEE

Conference_Location

Ottawa, Ont.

ISSN

1090-3038

Print_ISBN

0-7803-4320-4

Type

conf

DOI

10.1109/VETEC.1998.686439

Filename

686439