Title :
Dynamic channel allocation techniques using adaptive modulation and adaptive antennas
Author :
Blogh, Jonathan S. ; Cherriman, Peter J. ; Hanzo, Lajos
Author_Institution :
Dept. of Electron. & Comput. Sci., Southampton Univ., UK
fDate :
2/1/2001 12:00:00 AM
Abstract :
This article studies the impact of adaptive quadrature amplitude modulation (AQAM) on network performance when applied to a cellular network, using adaptive antennas in conjunction with both fixed channel allocation (FCA) and locally distributed dynamic channel allocation (DCA) schemes. The performance advantages of using adaptive modulation are investigated in terms of the overall network performance, mean transmitted power, and the average network throughput. Adaptive modulation allowed an extra 51% of users to be supported by an FCA 4-QAM network, while in conjunction with DCA, an additional 54% user capacity was attained
Keywords :
adaptive antenna arrays; adaptive modulation; cellular radio; channel allocation; channel capacity; quadrature amplitude modulation; radio networks; AQAM; DCA; FCA 4-QAM network; adaptive antennas; adaptive quadrature amplitude modulation; average network throughput; cellular network; fixed channel allocation; locally distributed dynamic channel allocation; mean transmitted power; network performance; user capacity; Adaptive arrays; Adaptive control; Antenna arrays; Base stations; Channel allocation; Directive antennas; Interference; Land mobile radio cellular systems; Programmable control; Quadrature amplitude modulation;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
