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Multi-mode scatter communication system compatible with wifi

A scatter communication, multi-mode technology, applied in the field of scatter communication, can solve problems such as single communication mode, and achieve the effect of high compatibility

Active Publication Date: 2019-12-03
NO 719 RES INST CHINA SHIPBUILDING IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that, in view of the technical defect that each communication system in the prior art has a single communication mode, the patent of the present invention proposes a variety of compatible WiFi and / or LoRa multi-mode scattering communication systems, which can be used in the same digital system A variety of scatter communication systems are realized on top of it, forming a general architecture for multi-mode scatter communication

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  • Multi-mode scatter communication system compatible with wifi
  • Multi-mode scatter communication system compatible with wifi
  • Multi-mode scatter communication system compatible with wifi

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Embodiment Construction

[0060] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0061] The present invention proposes a multi-mode scatter communication system compatible with WiFi and / or LoRa, such as figure 1 shown. First, the base station generates a single-frequency signal of a frequency band covered by various communication modes, and radiates the single-frequency electromagnetic signal into the surrounding space through the antenna. The data to be sent by the scatter communication system is coded according to the corresponding communication protocol to form a baseband, and output a digital modulation waveform, and change the reflection / absorption state of its own antenna by driving a radio frequency switch device, thereby forming different types of communication data packets, which are finall...

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Abstract

The present invention proposes a multi-mode scatter communication system compatible with WiFi and / or LoRa, which can realize multiple scatter communication systems on the same digital system, and forms a general framework for multi-mode scatter communication. Therefore, the present invention is more general, flexible, reconfigurable and highly compatible than the background technical solutions. Solution 1 of the present invention can realize scatter communication in different modes only by changing the antenna and changing the software configuration of the digital baseband processor. The second solution of the present invention can realize multi-mode scatter communication of mutually independent channels, and multiple channels can communicate at the same time without channel blocking. The third solution of the present invention can implement multiple modes of scattering communication in the frequency band covered by the multi-frequency antenna in a time-division multiplexing manner.

Description

technical field [0001] The present invention relates to the field of scatter communication, more specifically, to a multi-mode scatter communication system compatible with WiFi and / or LoRa. Background technique [0002] In early 2017, Bryce Kellogg of the University of Washington and others proposed passive WiFi scattering communication technology in the paper "Passive Wi-Fi: Bringing Low Power to Wi-Fi Transmissions"; in September of the same year, Vamsi Talla of the University of Washington and others in the The LoRa scattering communication technology is proposed in the paper "LoRa Backscatter: Enabling The Vision of Ubiquitous Connectivity". Because there is no need for power-consuming units such as radio frequency synthesizers, high-speed analog-to-digital converters, modems, and power amplifiers, the scattering communication technology can effectively reduce communication power consumption. [0003] In 2018, Tang Xiaoqing and others from the 719th Research Institute o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/22H04B1/401H04B1/00H04W88/06
CPCH04B1/006H04B1/0064H04B1/401H04B7/22
Inventor 唐晓庆张帅张超佘亚军谢桂辉
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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