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A wireless energy-carrying communication signal receiving method and receiver based on time slot allocation

A wireless energy-carrying communication and signal receiving technology, which is applied in the field of wireless energy-carrying communication signal reception, can solve the problems of rough resource allocation and low receiver working efficiency, and achieve the effect of high information rate

Active Publication Date: 2018-12-07
黑龙江省工研院资产经营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of rough resource allocation and low receiver working efficiency in the existing wireless energy-carrying communication signal receiving method, the present invention further provides a receiver-based wireless energy-carrying communication signal receiving method based on time slot allocation and a receiver

Method used

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  • A wireless energy-carrying communication signal receiving method and receiver based on time slot allocation
  • A wireless energy-carrying communication signal receiving method and receiver based on time slot allocation
  • A wireless energy-carrying communication signal receiving method and receiver based on time slot allocation

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specific Embodiment approach 1

[0020] Specific implementation mode 1: The wireless energy-carrying communication signal receiving method of the receiver based on time slot allocation in this embodiment, the wireless energy-carrying communication signal is precoded by random beamforming technology, and the precoding matrix is ​​singular valued by the channel matrix h Decomposed to obtain, and satisfy independent and identical distribution, including the following steps:

[0021] In step 1, the large-scale fading coefficient θ, transmitted signal power P, and noise power σ are obtained from the received signal 2 , channel gain H and number of antennas N t , the signal to be received carries energy and information, and the channel gain H and channel matrix h satisfy

[0022] In step 2, according to the large-scale fading coefficient θ, the transmitted signal power P, and the noise power σ 2 , channel gain H, number of antennas N t Determining the Optimal Threshold Value The functional relational express...

specific Embodiment approach 2

[0026] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is:

[0027] Calculate the average reachable rate R as follows:

[0028]

[0029] Calculate the average value Q of collected energy specifically as:

[0030]

[0031] where a is the integral variable.

[0032] The above formula (1) and formula (2) are obtained through the following derivation process:

[0033] The communication signal is precoded by the transmitting end of the radio frequency signal using random beamforming technology, and the precoding matrix is ​​obtained by SVD decomposition (ie, singular value decomposition) of the channel matrix h. The transmitted signal is composed of several resource blocks, each resource block is composed of several time slots, and the precoding matrix of the kth time slot is Φ(k)=[Φ 1 (k) Φ 2 (k) … Φ N (k)], N=N t is the number of antennas at the transmitter. The precoding matrix should satisfy i...

specific Embodiment approach 3

[0058] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the receiver may include an energy-limited receiver and a rate-limited receiver. When the receiver is an energy-limited receiver , the optimal threshold value is obtained according to the optimization function Specifically:

[0059]

[0060] where q th For the minimum energy required for the normal operation of the receiver, Γ is a gamma function;

[0061] When the receiver is a rate-limited receiver, "obtain the optimal threshold value according to the optimization function "Specifically:

[0062]

[0063] where gamma th The lowest rate required for the receiver to work properly, Γ is the gamma function.

[0064] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a SWIPT (Simultaneous Wireless Information and Power Transfer) signal receiving method based on time slot assignment, and a receiver, which relate to the field of wireless communication receivers. In order to solve a problem of rough resource allocation for rate and energy in a receiver algorithm and low working efficiency of the receiver in the existing technology, the method provided by the invention comprises steps of: acquiring large-scale fading coefficients, transmitting signal power, noise power, channel gain and number of antennae from to-be-received signals; according to the preceding parameters, determining a function relational expression of an optimal threshold value about an average collected energy value and an average achievable rate value, and an optimization function, and obtaining the optimal threshold value; and judging according to the optimal threshold value, and controlling an energy receiving part to receive energy or controlling an information receiving part to receive information. The receiver provided by the invention comprises a threshold switching module for controlling switching of energy receiving or information receiving, and function of the receiver is realized based on the preceding method. The method and the receiver provided by the invention are suitable for design of the receivers of a SWIPT system.

Description

technical field [0001] The invention relates to the field of wireless communication receivers, in particular to a method for receiving wireless energy-carrying communication signals. Background technique [0002] In today's era, the wireless communication business is growing explosively, the network is large-scale, and the communication equipment is diversified. For example, many energy-constrained networks such as sensor networks have low power consumption, but because of their large network scale, there are problems such as difficult wiring and poor sustainability. [0003] The radio frequency signal carries information and energy at the same time, and the wireless information and power transfer (SWIPT) technology can use the energy carried in the signal and the radio frequency signal energy in the surrounding space to charge the receiver, and the receiver can realize information transmission at the same time Both functions with energy harvesting. But for the same receiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/0456H04B7/08
CPCH04B7/0413H04B7/0456H04B7/086Y02D30/70
Inventor 马琳冯雨晴徐玉滨崔扬
Owner 黑龙江省工研院资产经营管理有限公司