Full duplex robust hybrid beam forming method based on millimeter wave broadband communication

A broadband communication, hybrid beam technology, applied in the field of full-duplex robust hybrid beamforming, can solve problems such as limiting practical implementation

Active Publication Date: 2022-06-07
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, since the channel errors introduced by mmWave estimation techniques (such as compressed sensing algorithms) are usually correlated, this limits the practical implementation of the above robust design

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  • Full duplex robust hybrid beam forming method based on millimeter wave broadband communication
  • Full duplex robust hybrid beam forming method based on millimeter wave broadband communication
  • Full duplex robust hybrid beam forming method based on millimeter wave broadband communication

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Embodiment Construction

[0044] The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic idea of ​​the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0045] Among them, the accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical drawings, and should not be ...

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Abstract

The invention relates to a full duplex robust hybrid beam forming method based on millimeter wave broadband communication, and belongs to the technical field of 5G communication. The method comprises the following steps: firstly, designing an interference elimination matrix at a receiving end by utilizing the null-space property of a self-interference channel; after the self-interference signal is eliminated, a mutual information lower bound of a channel is used as an optimization problem, an objective function is established according to the equivalence of a mutual information maximization problem and a weighted minimum mean square error (WMMSE) minimization problem, and a full-digital precoder is solved. And finally, decomposing the all-digital transceiver into a hybrid transceiver by using an iterative decomposition method with a closed-form solution. Self-interference is eliminated by using the null-space characteristic of an equivalent channel, so that the design of a full-duplex system is simplified into a half-duplex system, then an optimization problem is constructed by using the relationship between the lower bound of the channel capacity and the WMMSE to solve a corresponding all-digital transceiver, and finally a hybrid transceiver is obtained by using an iterative decomposition method with a closed-form solution.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a full-duplex robust hybrid beamforming method based on millimeter wave broadband communication. Background technique [0002] Millimeter-wave large-scale multiple-input multiple-output communication systems have become a key technology for next-generation communication systems due to their high spectral efficiency and high bandwidth. Due to power consumption and hardware cost constraints, it is not practical to use traditional all-digital transceivers in mmWave communication systems, which require connecting the same number of RF links as the number of antennas. To solve this problem, the concept of hybrid transceivers is proposed, which has lower hardware complexity and still provides sufficient beamforming under large-scale antenna arrays compared to fully digital transceivers with high complexity. shape gain. [0003] In addition, using the full-duplex communication mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0456H04B7/08H04L5/16
CPCH04B7/0456H04B7/0854H04B7/086H04L5/16Y02D30/70
Inventor 罗臻胡艳姿刘宏清黎勇
Owner CHONGQING UNIV OF POSTS & TELECOMM
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