Sensor-efficient spatial processing of multiple co-channel digital signals

Author

Schodorf, Jeflrey B. ; Williams, Douglas B. ; Barry, John R.

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

3

fYear

1995

fDate

9-12 May 1995

Firstpage

1749

Abstract

An adaptive space-time processing system for dynamic spatial channels in a CDMA mobile communications network is presented. The proposed system consists of an adaptive sensor array that estimates the desired directions and waveforms, followed by adaptive linear equalizers that refine the waveform estimates by compensating for the mobile radio uplink channel. Capacity gains are achieved through code reuse, which is made possible by performing the spatial processing after the codes have been decorrelated with one another. Simulation results for a two sensor array in a variety of interference scenarios are presented in the form of bit error rate curves

Keywords

adaptive equalisers; adaptive signal processing; array signal processing; channel capacity; code division multiple access; digital radio; digital signals; land mobile radio; radio networks; radiofrequency interference; CDMA mobile communications network; adaptive linear equalizers; adaptive sensor array; adaptive space-time processing system; bit error rate curves; capacity gains; channel capacity; code reuse; decorrelation; dynamic spatial channels; interference; mobile radio uplink channel; multiple co-channel digital signals; sensor-efficient spatial processing; simulation results; waveform estimates; Adaptive arrays; Adaptive systems; Channel capacity; Equalizers; Land mobile radio; Mobile communication; Multiaccess communication; Performance gain; Sensor arrays; Sensor systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on

Conference_Location

Detroit, MI

ISSN

1520-6149

Print_ISBN

0-7803-2431-5

Type

conf

DOI

10.1109/ICASSP.1995.480036

Filename

480036