Large-scale antenna array oriented wireless energy information transmission network power control method

A large-scale antenna and wireless energy technology, applied in wireless communication, power management, electrical components, etc., can solve problems such as uneven power distribution, interference between users, and low power of target terminals

Active Publication Date: 2015-05-06
上海瀚芯实业发展合伙企业(有限合伙)
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Problems solved by technology

[0005] Technical problem to be solved: Aiming at the deficiencies of the prior art, the present invention proposes a power allocation method for an energy information transmission network oriented to a large-scale antenna array, which is used to solve the inconsistency of power allocation existing in the existing mixed transmission of information and energy. adverse effects such as low target terminal power and inter-user interference

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  • Large-scale antenna array oriented wireless energy information transmission network power control method
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  • Large-scale antenna array oriented wireless energy information transmission network power control method

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with the accompanying drawings.

[0053] Such as figure 1 Shown, the present invention is implemented in the following steps:

[0054] At the beginning of each transmission, all terminals send uplink orthogonal pilots to the base station at the same time, and the base station uses the typical minimum mean square error estimation method to estimate the uplink channel parameters through the received orthogonal pilots, so that the base station obtains the small-scale fading parameters of the uplink channel vector g k and the uplink channel large-scale fading factor θ k , where k=1,...,K, K is the total number of terminals. In a time division duplex system, using the reciprocity of the system uplink channel and downlink channel, the base station obtains the downlink channel small-scale fading parameter vector h of the kth user terminal k and downlink channel large-scale fading factor α k . where g k...

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Abstract

The invention discloses a large-scale antenna array oriented wireless energy information transmission network power control method. The large-scale antenna array oriented wireless energy information transmission network power control method comprises the following steps that firstly upstream channel parameters are estimated on the base station side and are obtained according to channel reciprocity; then, a base station allocates information sending power for each user and calculates pre-encoding vectors to perform downstream energy transmission by means of the method according to the estimated channel parameters; a terminal collects energy and then utilizes the power energy to send the information to the base station through upstream links; finally, the base station calculates receiving vectors according to upstream channel information and accordingly obtains upstream transmitted information of the users. The large-scale antenna array oriented wireless energy information transmission network power control method can be effectively applied to an actual scene, the terminal and rate of a system can be maximized, and meanwhile the minimum rate of the terminal of the system is maximized.

Description

technical field [0001] The invention relates to the field of power control, especially the power control in the transmission process of wireless energy and information. Background technique [0002] Wireless energy transmission technology transmits energy to the terminal in the form of electromagnetic waves, which can prolong the battery life of the terminal, and even build a wireless energy transmission system that avoids battery replacement. It is used in some places where charging is difficult or even difficult to complete, such as battlefields, pollution / radiation environments, and inside the human body. The combination of wireless energy transfer system and traditional communication technology can realize the mixed transmission of energy and information. In the prior art, there are mainly two hybrid transmission schemes, namely Simultaneous Wireless Information and Power Transfer (SWIPT for short) and Wireless Powered Communication Network (WPCN for short). Under the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J50/20
CPCH04W52/18
Inventor 许威吴宪张华
Owner 上海瀚芯实业发展合伙企业(有限合伙)
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