Title :
MIMO capacity at 2.1 GHz while entering tunnels
Author :
Molina-García-Pardo, José-María ; Rodríguez, José-Víctor ; Juan-Llácer, Leandro
Author_Institution :
Departamento de Tecnologias de la Informacion y las Comunicaciones, Univ. Politecnica de Cartagena, Spain
Abstract :
A ray-launching model based on the application of the uniform theory of diffraction (UTD) and geometrical optics (GO) has been used to study the propagation in an idealized tunnel for an 8×8 MIMO system. Capacity has been studied for 4 positions of the transmitter, and it is shown that there exists a zone from the entrance to a certain distance where capacity remains high, and after this zone capacity decreases sharply. This distance depends on the position of the transmitter and can be directly related to the excitation zone.
Keywords :
MIMO systems; UHF radio propagation; channel capacity; geometrical optics; geometrical theory of diffraction; 2.1 GHz; MIMO capacity; UTD; excitation zone; geometrical optics; ray-launching model; transmitter positions; tunnel UHF propagation; tunnel entrance high capacity zone; uniform theory of diffraction; Antennas and propagation; Electronic mail; Geometrical optics; Hospitals; MIMO; Optical transmitters; Physical theory of diffraction; Receiving antennas; Solid modeling; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1399906
