Title :
Performance of switched-beam smart antennas for cellular radio systems
Author :
Ho, Ming-Ju ; Stuber, Gordon L. ; Austin, Mark D.
Author_Institution :
AT&T Bell Labs., Whippany, NJ, USA
fDate :
2/1/1998 12:00:00 AM
Abstract :
The performance and feasibility of switched-beam smart antennas for cellular radio systems is investigated. Switched-beam smart antenna systems are shown to either increase the capacity or extend the radio coverage by increasing the carrier-to-interference ratio (CIR). The trunking efficiency degradation caused by narrow-beam sectoring can be recovered or even improved by using a variety of trunkpool techniques. One drawback of switched-beam smart antennas is that the improvement in reverse-channel performance is not uniform over the entire cell area, and this presents a limiting factor on the achievable gains, practical considerations such as power control and the limited deployment of smart antenna cells are also addressed
Keywords :
cellular radio; channel capacity; cochannel interference; directive antennas; interference suppression; land mobile radio; multibeam antennas; power control; radiofrequency interference; telecommunication control; achievable gains; carrier-to-interference ratio; cellular radio systems; cochannel interference; directive antennas; multibeam antenna; narrow-beam sectoring; power control; radio coverage; reverse-channel performance; smart antenna cells; switched-beam smart antennas; trunking efficiency degradation; trunkpool techniques; Adaptive arrays; Antenna arrays; Cellular networks; Costs; Degradation; Directive antennas; Land mobile radio cellular systems; Macrocell networks; Microcell networks; Receiving antennas;
Journal_Title :
Vehicular Technology, IEEE Transactions on
