Is Orbital Angular Momentum (OAM) Based Radio Communication an Unexploited Area?

被引:416
作者
Edfors, Ove [1 ]
Johansson, Anders J. [1 ]
机构
[1] Lund Univ, Elect & Informat Technol Dept, S-22100 Lund, Sweden
关键词
Antenna arrays; antenna radiation patterns; channel capacity; free-space propagation; MIMO; orbital angular momentum; radio communication; CAPACITY;
D O I
10.1109/TAP.2011.2173142
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We compare the technique of using the orbital angular momentum (OAM) of radio waves for generating multiple channels in a radio communication scenario with traditional multiple-in-multiple-out (MIMO) communication methods. We demonstrate that, for certain array configurations in free space, traditional MIMO theory leads to eigen-modes identical to the OAM states. From this we conclude that communicating over the sub-channels given by OAM states is a subset of the solutions offered by MIMO, and therefore does not offer any additional gains in capacity.
引用
收藏
页码:1126 / 1131
页数:6
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