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Backscatter communication method, device and system based on pulse interval modulation

A technology of pulse interval modulation and backscattering, applied in transmission systems, electromagnetic wave transmission systems, electrical components, etc., can solve the problem of low transmission rate, achieve the effect of improving link capacity and ensuring transmission reliability

Active Publication Date: 2022-02-08
HUAZHONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

[0004] Aiming at the defects of the prior art, the present invention provides a backscatter communication method, device and system based on pulse interval modulation, and its purpose is to solve the problems of the prior art Technical issues with lower transmission rates due to the use of symbol-level modulation

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  • Backscatter communication method, device and system based on pulse interval modulation
  • Backscatter communication method, device and system based on pulse interval modulation
  • Backscatter communication method, device and system based on pulse interval modulation

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

[0038] In order to achieve the above purpose, an embodiment of the present invention provides a backscatter communication method based on pulse interval modulation, such as figure 1 shown, including the following steps:

[0039] base station:

[0040] Send a chirped spread spectrum signal as an excitation signal.

[0041] Specifically, a chirped spread spectrum signal consists of symbols wh...

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Abstract

The invention discloses a backscatter communication method, device and system based on pulse interval modulation, and belongs to the field of wireless communication, and the method comprises the steps: enabling a backscatter label to divide information bits to be sent into bit sequences; performing backscattering processing on the excitation signal sent by the base station; enabling the receiver to receive the excitation signal and the backscattering signal sent by the base station; demodulating the excitation signal sent by the base station; preprocessing the backscattering signals; determining the position of an anchor symbol in the backscattering signal; according to the position of the anchor symbol, solving the lengths of all the time intervals, calculating the number of the time slots contained in each time interval, and performing decoding to obtain the information bits, so that a plurality of information bits can be transmitted in each time interval, and the communication rate is greatly improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to a backscatter communication method, device and system based on pulse interval modulation. Background technique [0002] In recent years, backscatter communication has received extensive attention and research. Backscatter communication transmits its own data by reflecting wireless signals in the environment, and does not require high-power components such as high-frequency crystal oscillators, mixers, and amplifiers. Therefore, backscatter communication has ultra-low power consumption and ultra-low manufacturing costs. Advantages are regarded as one of the key technologies to realize the vision of Internet of Things. Like traditional communication technology, the research of backscatter communication has been pursuing longer propagation distance and higher transmission rate. The long-distance and high-speed characteristics can expand the application of back...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/524
CPCH04B10/524Y02D30/70
Inventor 江涛彭宇翔肖丽霞
Owner HUAZHONG UNIV OF SCI & TECH
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