Performance Analysis of CDMA Mobile System Employing LPA Smart Antenna

Seokjin SUNG  Hyunduk KANG  Vladimir KATKOVNIK  Kiseon KIM  

IEICE TRANSACTIONS on Communications   Vol.E90-B   No.1   pp.184-188
Publication Date: 2007/01/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.1.184
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
LPA antenna,  moving user environment,  time-varying DOA,  

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We investigate the performance of a code division multiple access (CDMA) system employing local polynomial approximation (LPA) smart antenna under moving user scenario. A closed form for average signal to interference plus noise power ratio (SINR) is derived, where the angular velocity of a target user is invariant during an observation interval. This SINR is independent of user velocity, and consequently it induces the independence of bit error rate (BER) with respect to the user velocity, while the use of conventional smart antenna shows significant degradation in the system performance by moving user.