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Robust beamforming design method for full-duplex relays based on self-interference energy harvesting

A technology of energy collection and design method, applied in the direction of reducing energy consumption, space transmit diversity, diversity/multi-antenna system, etc., can solve problems such as unrealizable circuits, and achieve easy engineering implementation, low complexity, and low required power Effect

Active Publication Date: 2021-09-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] An ideal wireless simultaneous information and power transfer (SWIPT) receiver would be able to decode the information and harvest energy from the same signal, however practical circuits are currently unable to achieve this

Method used

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  • Robust beamforming design method for full-duplex relays based on self-interference energy harvesting
  • Robust beamforming design method for full-duplex relays based on self-interference energy harvesting
  • Robust beamforming design method for full-duplex relays based on self-interference energy harvesting

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Embodiment Construction

[0038] The present invention will be described in detail below through a preferred embodiment and in conjunction with the accompanying drawings.

[0039] The typical application scenario of the present invention is to minimize the power required to be provided by the relay's own battery, and to constrain the maximum relay transmission power and the lowest end-to-end signal-to-noise ratio, and to consider the channel information error in the actual system. The optimization process is to transform the optimization problem by using Schmidt orthogonalization, and then use the KKT conditional solution to obtain the closed-form optimal relay robust beamforming. Such as figure 1 As shown, a full-duplex relay robust beamforming design method based on self-interference energy harvesting disclosed in the embodiment of the present invention, the constructed optimization problem can be expressed as:

[0040] Optimization objective: to minimize P b

[0041] Constraints: P R ≤P max

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Abstract

The invention discloses a full-duplex relay robust beamforming design method based on self-interference energy collection, with the goal of minimizing the power provided by the relay's own battery, for the maximum relay transmission power and the lowest end-to-end The signal-to-noise ratio is constrained, and the channel information error in the actual system is considered. The optimization process is to transform the optimization problem by using Schmidt orthogonalization, and then use the KKT conditional solution to obtain the closed-form optimal relay robust beamforming. Compared with the non-robust design that does not consider the error of channel information, the present invention can effectively reduce the power required to be provided by the battery, and has low computational complexity, which is beneficial to engineering realization.

Description

technical field [0001] The invention relates to a relay communication system, in particular to a full-duplex relay robust beamforming design based on self-interference energy collection. Background technique [0002] Wireless relay is one of the supporting technologies of the fifth-generation wireless network, which can significantly improve network coverage and system throughput. Half-duplex relays occupy two time slots for one transmission between the source node and the destination node, which limits the spectral efficiency. Full-duplex communication is a technique that can help achieve throughput gains, as it offers greater spectral efficiency compared to half-duplex communication by utilizing the entire bandwidth for data transmission. Full-duplex simultaneous transmission and reception has double the information rate compared with half-duplex, but at the same time it will bring a new problem that cannot be ignored. Its own receiving antenna re-receives, forming self-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/155H04B7/06H04B7/08
CPCH04B7/0617H04B7/086H04B7/15507H04B7/15564Y02D30/70
Inventor 沈弘丁天赵春明
Owner SOUTHEAST UNIV