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A Novel Wireless Local Positioning System via a Merger of DS-CDMA and Beamforming: Probability-of-Detection Performance Analysis Under Array Perturbations

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2 Author(s)
Hui Tong ; Dept. of Electr. & Comput. Eng., Michigan Technol. Univ., Houghton, MI ; Seyed A. Zekavat

This paper investigates the probability-of-detection (POD) performance of a novel wireless local positioning system (WLPS) realized via direct sequence code division multiple access (DS-CDMA) and beamforming techniques. The proposed WLPS has unique signaling schemes that discriminate it from the traditional wireless systems and allows the WLPS to have many civilian and military applications. The WLPS consists of two main parts: 1) the detecting unit, a base station carried by a mobile unit defined as dynamic base station (DBS), and 2) the being detected unit, a transponder (TRX) that is mounted on the targets, each assigned a unique identification code. Each DBS should be capable of detecting and locating all available TRXs in its coverage area. As a result, the main complexity of this system is focused at the DBS receiver. In this paper, we introduce WLPS structure, and both theoretically and numerically compute, and compare the POD performance of the DBS receiver realized by a merger of DS-CDMA and antenna arrays. We also analyze and simulate the performance of this system under perturbations in the DBS antenna array vector. The simulations are particularly performed for vehicular collision avoidance applications

Published in:

IEEE Transactions on Vehicular Technology  (Volume:56 ,  Issue: 3 )