Effects of Array Orientations on Degrees of Freedom for 3D LoS Channels in Short-Range Communications

Author

Xumin Pu ; Shihai Shao ; Kai Deng ; Youxi Tang

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

4

Issue

1

fYear

2015

fDate

Feb. 2015

Firstpage

106

Lastpage

109

Abstract

In this letter, we investigate the spatial degrees of freedom (DoF) of line-of-sight (LoS) channels in three-dimensional (3D) space with respect to the array orientations in short-range communications. First, the corresponding response of LoS channels is modeled using the spherical-wave model (SWM). The analytical expression for the spatial DoF of LoS channels with various array orientations is then derived and compared with that obtained in long-range communications. Both the analytical and simulation results show that the array orientations have a significant impact on the spatial DoF of short-range LoS channels.

Keywords

antenna arrays; radiocommunication; wireless channels; 3D LoS channels; 3D space; DoF; SWM; array orientations; degrees of freedom; line-of-sight channels; long-range communications; short-range communications; spherical-wave model; Antennas; Arrays; Eigenvalues and eigenfunctions; MIMO; Simulation; Three-dimensional displays; Wireless communication; Degrees of freedom (DoF); line-of-sight (LoS); short-range communications; spherical-wave model (SWM);

fLanguage

English

Journal_Title

Wireless Communications Letters, IEEE

Publisher

ieee

ISSN

2162-2337

Type

jour

DOI

10.1109/LWC.2014.2381221

Filename

6985587