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Wave beam forming method in power line MIMO communication based on energy efficiency

A beamforming and beamforming matrix technology, applied in the electric power field, can solve problems such as impracticality and inability to take into account the needs of user information transmission rate, eliminate multi-user interference and co-channel interference, improve energy utilization efficiency, and ensure transmission rate. Effect

Active Publication Date: 2017-02-22
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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Problems solved by technology

However, the existing research results are often only one-sided pursuit of high energy efficiency, and can not take into account the user's demand for information transmission rate, which is obviously not practical, so further research is necessary

Method used

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  • Wave beam forming method in power line MIMO communication based on energy efficiency
  • Wave beam forming method in power line MIMO communication based on energy efficiency
  • Wave beam forming method in power line MIMO communication based on energy efficiency

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the drawings.

[0043] The signal processing steps of the power line MIMO transceiver end are as follows:

[0044] Step A, the present invention considers a multiple-input multiple-output system, the transmitting end sends a pilot sequence; the receiving end estimates the channel matrix H according to the pilot sequence;

[0045] Step B1: According to the estimated channel matrix H, the receiving end compares with the codebook matrix agreed by the transmitting end of the receiving end and calculates the choral distance between the two.

[0046]

[0047] Step B2: compare the choral distance obtained in step B1 to find the smallest choral distance;

[0048] Step B3, sending the channel number corresponding to the smallest choral distance to the sending end;

[0049] Step C1: The sender calculates the feedback channel according to the channel number obtained by the receiver

[0050] Step C2, the sender accordin...

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Abstract

A wave beam forming method in power line MIMO communication based on energy efficiency is disclosed. The method comprises the following steps that a, a sending terminal of a MIMO power line communication system sends a pilot frequency sequence to a receiving terminal; the receiving terminal estimates a channel matrix H according to the received pilot frequency sequence; b, the receiving terminal carries out quantification on the estimated channel matrix H so as to acquire a feedback channel and then feeds back a number of the feedback channel to the sending terminal; c, the sending terminal takes maximization energy utilization efficiency as an optimization object and calculates a wave beam forming matrix T according to the feedback channel; d, the receiving terminal calculates an equalization matrix G according to the wave beam forming matrix T calculated by the sending terminal; e, the receiving terminal acquires x<hat> according to the equalization matrix G. An iteration method is used to calculate the wave beam forming matrix and the corresponding receiving terminal equalization matrix so that a system interference is eliminated, an information transmission rate is guaranteed and energy utilization efficiency of the system is increased.

Description

Technical field [0001] The invention relates to a beamforming method of a multiple-input multiple-output (MIMO) power line communication system, and belongs to the field of electric power technology. Background technique [0002] In the energy Internet, due to the numerous energy access devices, various communication methods, and a large amount of information to be transmitted, broadband power line carrier communication technology has become a research focus. The introduction of multiple input multiple output (MIMO) technology has made broadband power line MIMO systems an important support system for energy Internet communications. In the broadband power line MIMO system, it is necessary to solve the problem of co-frequency interference in the power line. According to the dirty paper coding theory, co-channel interference can be completely eliminated, thereby increasing the transmission rate of the system; but because the dirty paper coding that eliminates co-channel interference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/0417H04B3/54
CPCH04B3/54H04B7/0417H04B7/0617H04B7/0619Y02D30/70
Inventor 李中赵伟于浩王伟柏思瑶
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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