Code timing estimation using a spatial diversity for DS-CDMA communication systems

Author

Kim, Sangchoon ; Miller, Scott L.

Author_Institution

Dept. of Electr. & Comput. Eng., Florida Univ., FL, USA

Volume

3

fYear

1999

fDate

36342

Firstpage

2383

Abstract

The problem of estimating code timings of DS-CDMA signals when using a multiple antenna sensor array which exploits spatial diversity is considered on a frequency selective fading channel. We propose an efficient implementation of an asymptotic maximum likelihood approach for joint estimation of multipath timings of a desired user´s signal on fading channels due to multipath propagation. The proposed algorithm is shown to work well in the presence of frequency selective fading and near-far environments

Keywords

antenna arrays; code division multiple access; diversity reception; fading channels; land mobile radio; maximum likelihood estimation; multipath channels; receiving antennas; spread spectrum communication; DS-CDMA communication systems; asymptotic maximum likelihood approach; code timing estimation; frequency selective fading; frequency selective fading channel; multipath propagation; multipath timings; multiple antenna sensor array; near-far environments; spatial diversity; Antenna arrays; Antennas and propagation; Fading; Frequency estimation; Maximum likelihood estimation; Multiaccess communication; Receiving antennas; Sensor arrays; Timing; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1999 IEEE 49th

Conference_Location

Houston, TX

ISSN

1090-3038

Print_ISBN

0-7803-5565-2

Type

conf

DOI

10.1109/VETEC.1999.778499

Filename

778499