Title :
Improvement of performance in wireless communications systems by using adaptive arrays
Author :
De Faria, Vagner Vilela ; Ribeiro, Jose AntBnio Justino
Author_Institution :
Nat. Telecommun. Inst., Santa Rita Do Sapucai, Brazil
Abstract :
Smart antennas is a system consisting of an antenna array and an adaptive processor that can adjust the main lobe and s of the radiation diagram. The direction of main beam maximum and the beam width are determined by a pilot signal. The system can reject or attenuate interference signals or noises occurring outside the main lobe. This performance is obtained if the output signals of the elements of the antenna array are properly combined to reduce the interference according to specified directions.
Keywords :
adaptive antenna arrays; antenna radiation patterns; array signal processing; beam steering; cellular radio; interference suppression; adaptive antenna arrays; adaptive processor; beam switching; cellular telephony; interference signal attenuation; interference signal rejection; main beam direction; noise rejection; radiation diagram main lobe; radiation diagram s; smart antennas; wireless communications system performance improvement; Adaptive arrays; Adaptive systems; Antenna arrays; Communication system control; Directive antennas; Frequency; Interchannel interference; Radio link; Telephony; Wireless communication;
Conference_Titel :
Microwave and Optoelectronics Conference, 2003. IMOC 2003. Proceedings of the 2003 SBMO/IEEE MTT-S International
Print_ISBN :
0-7803-7824-5
DOI :
10.1109/IMOC.2003.1242687
