Title :
Characterization of Line-of-Sight MIMO Channel for Fixed Wireless Communications
Author :
Liu, Leilei ; Hong, Wei ; Wang, Haiming ; Yang, Guangqi ; Zhang, Nianzu ; Zhao, Hongxin ; Chang, Jing ; Yu, Cheng ; Yu, Xutao ; Tang, Hongjun ; Zhu, Hongbin ; Tian, Ling
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing
fDate :
6/29/1905 12:00:00 AM
Abstract :
In this letter, we proposed an approach to construct multiple-input-multiple-output (MIMO) channel in line-of-sight (LOS) environment. It could be a potential technique for high-speed data transmission in fixed broadband wireless access (BWA). Based on Ricean fading channel model, our research is focused on the characteristics of the channel matrix such as the condition number. The initial discussion starts from a 4 times 4 MIMO scheme that the four antennas formed a square array on each side. A design constraint for antenna arrangement as a function of frequency and distance is derived for the LOS MIMO communication. Since rigorous constraint is difficult to achieve in practice, simulation results of the acceptable deviation from optimal design in different cases are presented. Smart geometrical arrangement and multipolarization may also weaken this constraint
Keywords :
MIMO communication; Rician channels; antenna arrays; data communication; radio access networks; BWA; LOS environment; Ricean fading channel model; antenna arrangement; channel matrix; fixed broadband wireless access; fixed wireless communications; high-speed data transmission; line-of-sight MIMO channel; multiple-input-multiple-output channel; Antennas and propagation; Data communication; Frequency; MIMO; Microwave propagation; Receiving antennas; Scattering; Transmitting antennas; Vectors; Wireless communication; Antenna arrangement; condition number; design constraint; line-of-sight (LOS); multiple-input-multiple-output (MIMO); multipolarization;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2007.890761
