Multimode vortex wave orthogonalization adaptive transmission method and device

An adaptive transmission and orthogonalization technology, which is applied in transmission systems, digital transmission systems, complex mathematical operations, etc., can solve the problem of OAM modal orthogonality degradation, solve the problem of modal orthogonality deterioration, and satisfy Communication requirements, increasing the number of modal multiplexing and the effect of communication spectrum efficiency

Active Publication Date: 2020-09-22
SHANGHAI RES CENT FOR WIRELESS TECH
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Problems solved by technology

[0045] The purpose of the present invention is to provide a multi-mode vortex wave orthogonalization adaptive transmission method and device suitable for non-ideal environments to solve the problem of OAM modal orthogonality degradation

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  • Multimode vortex wave orthogonalization adaptive transmission method and device
  • Multimode vortex wave orthogonalization adaptive transmission method and device
  • Multimode vortex wave orthogonalization adaptive transmission method and device

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Embodiment Construction

[0083] Below in conjunction with the drawings, preferred embodiments of the present invention are given and described in detail.

[0084] The multimode vortex wave orthogonalization adaptive transmission method of the present invention is based on the following principles:

[0085] Assuming that the communication requirement is R, the constructed orthogonalization matrix is ​​H PC . According to the formula in the background art section above, the purpose of the present invention is to orthogonalize the matrix H PC The possibly distorted channel matrix H OAM An equivalent circulant matrix is ​​reconstructed to ensure the orthogonality between the orbital angular momentum (OAM) modes.

[0086] The following description is the orthogonalization matrix H for three different communication requirements R PC The theoretical basis of the construction method.

[0087] 1) If the communication requirement R means: increase the number of data multiplexing channels;

[0088] Then th...

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Abstract

The invention provides a multimode vortex wave orthogonalization adaptive transmission method. The multimode vortex wave orthogonalization adaptive transmission method comprises the following steps: establishing a bidirectional orbital angular momentum multiplexing communication link; acquiring a channel matrix and a communication demand on a transmitting device; obtaining a pre-equalization matrix according to the channel matrix; analyzing the optimization target, and constructing an equivalent cyclic matrix meeting the optimization target; constructing an orthogonalization matrix according to the pre-equalization matrix and the equivalent cyclic matrix; and weighting the orbital angular momentum multiplexing data by using the orthogonalization matrix to realize orbital angular momentum signal preprocessing. The invention also provides a multimode vortex wave orthogonalization adaptive transmission device. According to the multimode vortex wave orthogonalization adaptive transmissionmethod, the channel matrix and the communication requirement of the link are obtained on the transmitting device, the orthogonalization matrix meeting the optimization target is constructed in a self-adaption mode according to the channel matrix and the communication requirement, and different communication requirements can be met in real time while OAM modal orthogonality is improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a multimode vortex wave orthogonalization self-adaptive transmission method and device, which is applicable to an orbital angular momentum multiplexing communication system in microwave and millimeter wave frequency bands. Background technique [0002] According to quantum mechanics and Maxwell's theory, the electromagnetic waves radiated by antennas have wave-particle duality, and can carry linear momentum and angular momentum like moving particles. Electromagnetic wave angular momentum includes two parts: spin angular momentum (Spin Angular Momentum, SAM) and orbital angular momentum (Orbital Angular Momentum, OAM). Among them, SAM is related to photon rotation, which is manifested as left-handed or right-handed circular polarization of electromagnetic waves, only Two orthogonal states; OAM is related to the spatial distribution of the photon wave function, w...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02G06F17/16
CPCH04L25/0242H04L25/0246G06F17/16Y02D30/70
Inventor 赵宇周斌于伟卜智勇
Owner SHANGHAI RES CENT FOR WIRELESS TECH
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