Title :
Performance enhancement of adaptive phased arrays for wireless indoor communication systems
Author :
Denidni, Ahmed T. ; Delisle, Gilles Y. ; Lecours, Michel
Author_Institution :
Dept. of Electr. Eng., Laval Univ., Que., Canada
Abstract :
This paper addresses the problem of communicating over a confined area that is characterized by multipath-fading as wireless indoor communication. To combat the effects of multipath-fading, we propose a new adaptive phased array antenna which is based on a non-linear method. An “on-off” adaptive algorithm to adjust a phase angle is developed and applied to an antenna system in order to control automatically its directivity pattern to enhance the received signal. A prototype of the antenna system (20 GHz linear array) has been built and tested; and the measured results of antenna patterns are presented to illustrate the performance of the method
Keywords :
adaptive antenna arrays; antenna phased arrays; antenna radiation patterns; fading; indoor radio; land mobile radio; linear antenna arrays; microwave antenna arrays; microwave propagation; multipath channels; 20 GHz; adaptive phased array antenna; adaptive phased arrays; antenna patterns; antenna system; automatic control; directivity pattern control; measured results; multipath fading; nonlinear method; on-off adaptive algorithm; performance enhancement; phase angle adjustment; received signal; wireless indoor communication systems; Adaptive arrays; Antenna measurements; Antenna radiation patterns; Communication system performance; Fading channels; Indoor radio communication; Land mobile radio propagation factors; Linear arrays; Microwave antennas; Microwave radio propagation; Multipath channels; Phased arrays;
Conference_Titel :
Electrical and Computer Engineering, 1994. Conference Proceedings. 1994 Canadian Conference on
Conference_Location :
Halifax, NS
Print_ISBN :
0-7803-2416-1
DOI :
10.1109/CCECE.1994.405734
