Title :
A study of adaptive array antenna system for land mobile communications
Author :
Fujimoto, Mitosh ; Nishikawa, Kunitoshi ; Sato, Kazuo
Author_Institution :
Toyota Central Res. & Dev. Labs. Inc., Aichi, Japan
Abstract :
Performances of an adaptive array antenna system for land mobile communications have been investigated through computer simulation and experiments. The adaptive array antenna system can automatically form nulls in the direction of undesired wave on receiving directional pattern. First, it is verified by computer simulation that only desired wave is received without interference by the system controlled on the basis of CMA, when the desired and undesired waves arrive at the receiving point together. Next, it is experimentally indicated that the undesired wave is suppressible by approximately 20 dB, even if the antenna element of the system has not an omni-directional pattern. From these studies, it is confirmed that the adaptive array antenna system is very useful for high quality land mobile communications
Keywords :
adaptive antenna arrays; antenna radiation patterns; interference suppression; land mobile radio; mobile antennas; radiofrequency interference; CMA; adaptive array antenna system; computer simulation; constant modulus algorithm; desired wave; interference suppression; land mobile communications; undesired wave; Adaptive arrays; Adaptive systems; Antenna arrays; Computer simulation; Control system synthesis; Directive antennas; Interference; Mobile antennas; Mobile communication; Receiving antennas;
Conference_Titel :
Intelligent Vehicles '95 Symposium., Proceedings of the
Conference_Location :
Detroit, MI
Print_ISBN :
0-7803-2983-X
DOI :
10.1109/IVS.1995.528254
