NDLI: Enhanced CDMA cellular system using interpolated uniform linear arrays

Content Provider	IEEE Xplore Digital Library
Author	Rouphael, T. Cruz, J.R.
Copyright Year	1996
Description	Author affiliation: Sch. of Electr. Eng., Oklahoma Univ., Norman, OK, USA (Rouphael, T.; Cruz, J.R.)
Abstract	A spatial interpolation algorithm for the upsampling, beyond spatial aliasing, of uniform linear arrays (ULAs) is presented. Its usage, at the base station, to enhance the performance of a code division multiple access (CDMA) cellular antenna system is considered. The objective is to increase the user-capacity and array resolution and reduce the fading and coupling effects with a minimal receiver hardware and processing cost. The proposed base station antenna is formed by placing the real array elements farther apart than /spl lambda//2, where /spl lambda/ is the free space wavelength. This increase in aperture enhances the resolution, minimizes coupling, and provides a form of space diversity to combat fading. To increase the user-capacity and at the same time eliminate any spatial ambiguities, the ULA is interpolated to within the spatial Nyquist rate. This is done by placing a virtual antenna element half way in between every two real adjacent antenna elements. Numerical simulations that validate these claims are also presented.
Starting Page	531
Ending Page	535
File Size	466594
Page Count	5
File Format	PDF
ISBN	0780332504
DOI	10.1109/ICC.1996.542253
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-06-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Base stations Spatial resolution Fading Interpolation Linear antenna arrays Hardware Costs Antenna arrays Space stations
Content Type	Text
Resource Type	Article

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