Title :
Adaptive antenna array assisted dynamic channel allocation techniques
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 :
The performance of base station adaptive antenna arrays (AAAs) is investigated in conjunction with fixed channel allocation (FCA) and dynamic channel allocation (DCA) schemes. Locally distributed DCA arrangements are studied and benchmarked against standard FCA, in the context of both line-of-sight (LOS) and multipath propagation environments. One-, two-, four-, and eight-element AAAs are employed using the sample matrix inversion (SMI) beamforming algorithm, in both the up- and the downlink. In most investigated scenarios, the locally optimized least interference algorithm (LOLIA) exhibited the best overall compromise in terms of a set of combined metrics, such as the forced termination probability, new call blocking probability, and the probability of a low quality access
Keywords :
adaptive antenna arrays; array signal processing; channel allocation; cochannel interference; interference suppression; matrix inversion; microcellular radio; multipath channels; probability; signal sampling; CCI; DCA; FCA; LOS propagation; SMI algorithm; base station adaptive antenna arrays; cochannel interference; distributed DCA arrangements; downlink; dynamic channel allocation; fixed channel allocation; forced termination probability; line-of-sight propagation; locally optimized least interference algorithm; low quality access probability; microcellular system; multipath channels; multipath propagation environment; new call blocking probability; performance; performance metrics; sample matrix inversion; sample matrix inversion beamforming algorithm; standard FCA; uplink; Adaptive arrays; Antenna arrays; Antennas and propagation; Array signal processing; Base stations; Channel allocation; Employment; Frequency; Radiofrequency interference; Wireless networks;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
