Massive MIMO information and energy simultaneous transmission system optimization method for 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, inaccurate modeling of asymmetric characteristics of transceivers, etc.

CN112054830AActive Publication Date: 2020-12-08XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-12-08

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Abstract

The invention discloses a Massive MIMO information and energy simultaneous transmission system optimization method for hardware damage, and the method comprises the steps: establishing a Massive MIMOdownlink signal-energy simultaneous transmission system model, and respectively discussing the hardware damage at a base station transmitter, the hardware damage at an information receiver of a user,and the hardware damage at an energy receiver of the user; according to hardware damage models at a base station, an information receiver and an energy receiver, ensuring that the total power constraint sent by the base station and the energy collected at the user energy receiver are greater than a threshold, and expresing the maximum and minimum reachable rate optimization problem of the user; introducing an auxiliary variable and taking a nonlinear energy collection function as a monotone increasing function, and converting the problem P1 into a problem P2; expressing the energy collection constraint of the user, the total power constraint of the base station and the reachable rate constraint of the information user as a function of a sending signal variance and a pseudo variance; and solving the maximum and minimum reachable rates of the users, and realizing system optimization by adopting an iterative optimization algorithm. According to the method, an additional degree of freedomis provided by using an asymmetric Gaussian signal.
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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...