Approved for public release, distribution is unlimited / Presently, the uniform linear array (ULA) is the most commonly used antenna system for a sectorized cell system like the commercial cellular systems. However, in many omni-directional cell communication systems, such as the ground-based military communications, interest in using the uniform circular array (UCA) has greatly increased. This thesis examines the use of an equally-spaced circular adaptive antenna array at the mobile station for a typical coded direct sequence code division multiple access (DS-CDMA) communication system. This thesis analyzed the performance of a randomly orientated adaptive UCA in the forward channel (base station to mobile station) of a coded multi-cell DS-CDMA system. Using a 3- and 4-element UCA, the ca-pacity and performance of different cellular systems under a range of shadowing conditions, with and without an-tenna sectoring at the base station, and various user capacities were simulated using the Monte Carlo simulation. The results for both ULA, as studied in [7], and UCA were compared and presented in this thesis. / http://hdl.handle.net/10945/1064 / Civilian, Defence Science and Technology Agency (Singapore)
| Identifer | oai:union.ndltd.org:nps.edu/oai:calhoun.nps.edu:10945/1064 |
| Date | 03 1900 |
| Creators | Seow, Tian Beng |
| Contributors | Ha, Tri T., Lebaric, Jovan, Electrical Engineering |
| Publisher | Monterey, California. Naval Postgraduate School |
| Source Sets | Naval Postgraduate School |
| Detected Language | English |
| Type | Thesis |
| Format | xvi, 59 p. : ill. (some col.) ;, application/pdf |
| Rights | Copyright is reserved by the copyright owner. |
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