Title :
Effect of Antenna Patterns on Narrowband MIMO Capacity
Author :
Intarapanich, Apichart ; Thongsopa, Chanchai ; Saetiaw, Charinsak
Author_Institution :
Nat. Electron. & Comput. Technol. Center, Phatumtani
Abstract :
In this paper, a model for MIMO capacity calculation with array element radiation patterns is proposed. The proposed model considers effect of radiation pattern, channel impulse responses and elements correlation separately. The effects of both directional and omni-directional antennas to the MIMO capacity are investigated. For the directional antenna case, horizontal polarized Dipole and Yagi-uda antennas are employed in the array. The omni-directional antennas case is considered to be an ideal MIMO capacity. We have shown that directional antennas reduce the narrowband MIMO capacity when the angle of arrival (AOA) is uniformly distributed. When the directional antennas with proper alignment to the mean AOA are used in a scenario where the AOA is Laplacian distribution, the capacity is increased. However, if the antenna alignment is off from the mean AOA, then the capacity is decreased.
Keywords :
Laplace transforms; MIMO communication; Yagi antenna arrays; antenna radiation patterns; dipole antenna arrays; direction-of-arrival estimation; directive antennas; Laplacian distribution; MIMO capacity calculation; Yagi-Uda antennas; angle of arrival; antenna patterns; array element radiation patterns; channel impulse responses; dipole antennas; omni-directional antennas; Antenna radiation patterns; Antennas and propagation; Dipole antennas; Directional antennas; MIMO; Microwave technology; Narrowband; Receiving antennas; Stochastic processes; Transmitting antennas; MIMO capacity;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007 International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-1044-6
Electronic_ISBN :
978-1-4244-1045-3
DOI :
10.1109/MAPE.2007.4393569
