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Soft information merging method for PLC system frame loads

A soft information and system frame technology, applied in the field of Internet of Things communication, to achieve the effect of simple calculation, easy implementation, and good white noise effect

Active Publication Date: 2022-01-28
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] In view of this, the object of the present invention is to provide a kind of diversity copy data combination method, solve the low-voltage power line broadband carrier communication system (power line communication) receiving end to carry out diversity copy combination Existing problems, improve the quality of diversity combined signal

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  • Soft information merging method for PLC system frame loads
  • Soft information merging method for PLC system frame loads
  • Soft information merging method for PLC system frame loads

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Embodiment Construction

[0052] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0053] The present invention is proposed for the low-voltage power line broadband carrier communication system. In order to more clearly illustrate the use me...

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Abstract

The invention relates to a soft information merging method for PLC system frame loads, and belongs to the field of Internet of Things communication. The method comprises a diversity copy data merging method and specifically comprises the following steps of: firstly, carrying out Fourier transform on frame structure data received by a receiving end, taking out frame load data in the frame structure data, namely modulation data of a frame load, and demodulating the modulation data of the frame load to obtain soft bit information of the frame load; and then, calculating a variance value of each diversity copy of the frame load by adopting a variance calculation method, merging by adopting a principle that the larger the variance value of the diversity copy is, the smaller the diversity merging coefficient is in diversity merging, and carrying out channel decoding after frame load soft information is merged. According to the invention, the problem of diversity copying and merging of the receiving end of a low-voltage power line broadband carrier communication system can be solved, and the quality of diversity merging signals is improved.

Description

technical field [0001] The invention belongs to the communication field of the Internet of Things, relates to a broadband power communication system PLC and wireless communication fusion technology, and in particular relates to a method for simultaneously transmitting data in the PLC and wireless channels, and finally performing diversity merging. Background technique [0002] Low voltage broadband power line carrier communication (LVPLC) communication is a special communication method that uses low-voltage power distribution lines (380 / 220V subscriber lines) as information transmission media for voice or data transmission. The high-frequency signal carrying information is loaded on the current, and then transmitted by various levels of power lines, and the modem receiving the information separates the high-frequency signal from the current and transmits it to the power line broadband user terminal (computer, TV or telephone and Smart meters, switches, transformers). [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04L27/26H04L25/02H04L1/00
CPCH04B3/54H04L27/2626H04L27/2628H04L27/2647H04L27/2651H04L27/2656H04L27/261H04L25/0224H04L1/0045H04L1/0054
Inventor 段红光文淳毛翔宇罗一静郑建宏
Owner CHONGQING UNIV OF POSTS & TELECOMM
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