Title :
Mode Combination in an Ideal Wireless OAM-MIMO Multiplexing System
Author :
Opare, Kwasi A. ; Yujun Kuang ; Kponyo, Jerry J.
Author_Institution :
Dept. of Electr. Eng., Kwame Nkrumah Univ. of Sci. & Technol. (KNUST), Kumasi, Ghana
Abstract :
In this letter, we present the mode combinations needed to achieve orthogonal sub-channels in an ideal wireless orbital angular momentum based multiple-input multiple-output (OAM-MIMO) multiplexing system with N OAM transmitters and M receive antennas. The results show that, orthogonality is achieved if the absolute difference between any two transmitted modes |vk| mod M ≠ 0. The modes are considered equivalent if their absolute difference is a multiple of M. Orthogonal OAM-MIMO multiplexing systems can be used to enhance spectral efficiency in wireless backhaul networks.
Keywords :
MIMO communication; angular momentum; multiplexing; radio networks; radio spectrum management; radio transmitters; receiving antennas; OAM transmitters; ideal wireless OAM-MIMO multiplexing system; mode combination; multiple input multiple output; orbital angular momentum; orthogonal subchannel; receive antenna; spectral efficiency enhancement; wireless backhaul networks; Eigenvalues and eigenfunctions; MIMO; Multiplexing; Receiving antennas; Signal to noise ratio; Wireless communication; OAM modes; Wireless orbital angular momentum (OAM); full rank; line of sight MIMO; orthogonal multiplexing system;
Journal_Title :
Wireless Communications Letters, IEEE
DOI :
10.1109/LWC.2015.2434375
