Chirp Signal Transmission and Reception With Orbital Angular Momentum Multiplexing

Vortex electromagnetic waves, which carry the orbital angular momentum (OAM), can increase channel capacity by utilizing OAM multiplexing technology in optical field. In order to fully exploit OAM mode-division multiplexing in radio domain, a crosstalk matrix of the communication channel between the...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2019-05, Vol.18 (5), p.986-990
Main Authors: Shu, Gaofeng, Wang, Wentao, Liang, Da, Deng, Yunkai, Wang, Robert, Zhang, Heng, Li, Ning
Format: Article
Language:English
Subjects:
Angular momentum
Antenna arrays
Antennas
Bandwidth
Channel capacity
Chirp
Chirp signal
Communication
Crosstalk
Division
Electromagnetic radiation
Frequency modulation
Laser beams
Matrices (mathematics)
Multiplexing
multiplexing and demultiplexing
Near field communication
orbital angular momentum (OAM)
Power dividers
Radar imaging
radio
Signal transmission
vortex waves
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Summary:Vortex electromagnetic waves, which carry the orbital angular momentum (OAM), can increase channel capacity by utilizing OAM multiplexing technology in optical field. In order to fully exploit OAM mode-division multiplexing in radio domain, a crosstalk matrix of the communication channel between the multi-OAM-mode transmission and reception is deduced theoretically in this letter. The crosstalk matrix shows that it is achievable to communicate between the same OAM modes but not possible between different OAM modes. To confirm this statement, a near-field proof-of-concept communication experiment, transmitting and receiving linear frequency modulation signals with different frequency modulation (FM) rate using uniform circular array antenna, is then carried out. The experimental results show that the crosstalk between different modes meets the requirements of near-field communication. It may also be beneficial for the application of the vortex wave for radar imaging in the future.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2019.2906996