An Optimization Method for Massive MIMO Signal Energy Simultaneous Interpretation System Aiming at Hardware Damage

A technology of simultaneous transmission and system optimization, applied in transmission systems, radio transmission systems, electrical components, etc., can solve the problems of inaccurate modeling of energy harvesting process and inaccurate modeling of asymmetric characteristics of transceivers

CN112054830BActive Publication Date: 2021-07-13XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-07-13

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Abstract

The invention discloses a Massive MIMO signal energy simultaneous transmission system optimization method aimed at hardware damage, establishes a Massive MIMO downlink signal energy simultaneous transmission system model, and then separately discusses the hardware damage at the base station transmitter and the user's information receiver. The hardware damage of the user and the hardware damage of the user’s energy receiver; according to the hardware damage model of the base station, information receiver, and energy receiver, it is guaranteed that the total power sent by the base station is constrained and the energy collected by the user’s energy receiver is greater than the threshold, and the expression of the user’s The maximum and minimum achievable rate optimization problem; the introduction of auxiliary variables, and the nonlinear energy collection function as a monotonically increasing function, transforming problem P1 into problem P2; the energy collection constraints of users, the total power constraints of base stations, and the achievable speed of information users Constraints are expressed as a function of the variance and pseudo-variance of the transmitted signal; the maximum and minimum achievable rates of users are solved, and the iterative optimization algorithm is used to realize system optimization. The present invention takes advantage of the additional degrees of freedom provided by asymmetric Gaussian signals.
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Description

technical field

[0001] The invention belongs to the technical field of wireless communication, and in particular relates to an optimization method for a Massive MIMO signal energy simultaneous interpretation system aimed at hardware damage. Background technique

[0002] In the Simultaneous Wireless Information Power Transfer System (SWIPT), radio frequency-based wireless power transfer is inefficient. In order to improve the spectrum efficiency and energy transmission efficiency of the SWIPT system, Massive MIMO technology is adopted. This feature significantly improves the degree of spatial freedom and helps to eliminate interference between users. Users in the cell can communicate at the same time. Communicate with the base station on frequency resources (SDMA). As far as energy transmission is concerned, the base station gathers energy in a small area through energy beamforming, which is beneficial to improve the energy transmission efficiency of the system. With the ad...

Examples

Embodiment Construction

[0119] The present invention provides an optimization method for a Massive MIMO signal energy simultaneous transmission system aimed at hardware damage. The hardware damage includes hardware damage at a base station transmitter, hardware damage at a user information receiver, and hardware damage at a user energy receiver. First discuss the respective hardware damage of the above three transceiver blocks; then adopt two information transmission schemes, symmetric Gaussian signal and asymmetric Gaussian signal; under these two signal transmission schemes, solve an optimization problem: the maximum and minimum of the user Achievable rate; Finally, through simulation verification, it is concluded that compared with symmetrical Gaussian signals, the use of asymmetric Gaussian signals can significantly improve the user's reachable rate and energy transmission efficiency.

[0120] A kind of Massive MIMO signal energy simultaneous interpretation system optimization method aimed at hard...