Title :
Adaptive antenna arrays for mobile satellite communications
Author :
El Zooghby, Ahmed H. ; El Khamy, Said ; Christodoulou, C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Central Florida Univ., Orlando, FL, USA
Abstract :
The problem of increasing the number of users in FDMA mobile satellite communication systems is addressed. An antenna array is used to estimate the AOA of the desired and cochannel mobile users then the same array is used to allocate the maximum of the pattern to desired users while cochannel interference is nulled. This paper describes the use of the MUSIC algorithm for DOA estimation. Pattern nulls are obtained using the Wiener solution for the optimum array weights. It is shown that this approach allows closer proximity of the mobile users with same frequency thus increasing the channel capacity
Keywords :
adaptive antenna arrays; antenna radiation patterns; channel capacity; cochannel interference; direction-of-arrival estimation; frequency division multiple access; land mobile radio; mobile antennas; mobile satellite communication; radiofrequency interference; satellite antennas; stochastic processes; AOA; DOA estimation; FDMA mobile satellite communication; MUSIC algorithm; Wiener solution; adaptive antenna arrays; channel capacity; cochannel interference; cochannel mobile users; mobile satellite communications; optimum array weights; pattern; pattern nulls; Adaptive arrays; Antenna arrays; Channel capacity; Direction of arrival estimation; Frequency division multiaccess; Interchannel interference; Mobile antennas; Multiple signal classification; Satellite antennas; Satellite communication;
Conference_Titel :
Southeastcon '96. Bringing Together Education, Science and Technology., Proceedings of the IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
0-7803-3088-9
DOI :
10.1109/SECON.1996.510084
