Full-duplex environment backscattering communication system, transmission method and resource allocation method

A backscatter and communication system technology, applied in the field of communication, can solve the problems of low speed and high energy consumption of the backscatter communication system

Inactive Publication Date: 2019-03-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0005] The main content of the present invention is to propose a full-duplex environment backscatter communication system, transmission metho...

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  • Full-duplex environment backscattering communication system, transmission method and resource allocation method
  • Full-duplex environment backscattering communication system, transmission method and resource allocation method
  • Full-duplex environment backscattering communication system, transmission method and resource allocation method

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Embodiment Construction

[0063] The present invention will be described in detail below with reference to the drawings and simulation examples, so that those skilled in the art can better understand the present invention.

[0064] First, like figure 1 As shown, the present invention proposes a full-duplex environmental backscatter communication system, including a full-duplex access point, one or more traditional users and M (M≥1) backscatter devices; The full-duplex access point is configured with one or more antennas for information transmission and reception at the same time and frequency.

[0065] Such as figure 2 As shown, the full-duplex access point includes the following modules:

[0066] Main control module: used to control the communication process, signal encoding and decoding, signal detection, data storage, etc. of access points, traditional users, and backscatter devices;

[0067] Baseband transmission module: Generates downlink transmission OFDM signals, including units such as source / channel...

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Abstract

The invention belongs to the field of communication technology, and relates to a full-duplex environment backscattering communication system, a transmission method and a resource allocation method. According to the system of the invention, a full-duplex-type access point is configured with one or more antennas, and two modes of channel estimation and full-duplex backscattering communication are included; in a channel estimation mode, the access point sends a downlink pilot signal, a plurality of backscattering devices carry out backscattering by respective fixed backscattering coefficients according to a manner of division multiplexing, the access point estimates channels of all the backscattering devices, and a traditional user utilizes the received pilot signal to estimate a downlink channel thereof; and in a full-duplex communication mode, the access point sends a downlink data signal, the traditional user uses the estimated downlink channel to carry out signal receiving detection,the backscattering devices select backscattering coefficients according to information bits for backscattering, and the access point detects signals of the backscattering devices. The system can be used in a variety of low-power-consumption Internet-of-things communication scenes, and has higher practicability.

Description

Technical field [0001] The invention belongs to the field of communication technology, and relates to a full-duplex environment backscatter communication system, transmission method and resource allocation method suitable for green Internet of Things applications. Background technique [0002] The Internet of Things is an important application scenario for 5G and future mobile communication systems. Various Internet of Things devices usually have strict requirements in terms of energy, cost, and complexity. Traditional backscatter communication systems, such as radio frequency identification (RFID) systems, use a reader to generate and send a radio frequency sinusoidal carrier wave to nearby backscatter devices (Tag) to provide energy and carry backscatter device information back To the reader. Backscattering device circuits are usually relatively simple and passive, so their processing power is limited. The RFID reader sends a sinusoidal carrier wave to the backscattering devi...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L5/14H04L25/02
Inventor 梁应敞杨刚周标袁冬冬
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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