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A fast radio spectrum detection method and system

A technology of radio spectrum and detection method, applied in the field of fast radio spectrum detection methods and systems, can solve the problem that abnormal signals cannot be quickly detected, and achieve the effects of realizing fast spectrum sensing, improving fast detection, and overcoming excessive sampling rate

Inactive Publication Date: 2019-09-20
NORTHWEST UNIV(CN)
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Problems solved by technology

[0004] Aiming at the defects and deficiencies in the prior art, the present invention provides a fast radio spectrum detection method and system, aiming at problems such as abnormal signals cannot be detected quickly, adopts the energy detection spectrum sensing system built by software radio platform GNURadio and general hardware USRP , improve the radio spectrum sensing rate, and achieve the purpose of rapid detection of abnormal signals

Method used

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  • A fast radio spectrum detection method and system
  • A fast radio spectrum detection method and system
  • A fast radio spectrum detection method and system

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Embodiment 1

[0084] Such as figure 1 and figure 2 As shown, Embodiment 1 of the present invention provides a fast radio spectrum detection method, such as figure 2, where the "benchmark" program of the GNU Radio Companion 3.7.11 system is used to transmit and receive radio signals; the "USRP (Universal Software Radio Peripheral) B210 (USRP model) #1" device is used as the signal source to set the transmission status (H0 / H1), can send signals of 2FSK, PSK, MSK and other modulation modes; "USRP B210#2" device is used as a monitoring device, and the RX2 antenna can be used as the receiving end to collect the energy information of the signal transmitted by the transmitting source. The USRPB210#2 device set The start-stop frequency and stop frequency are 400MHz and 2000MHz respectively.

[0085] Use GNU Radio to process the wireless signal to form a modulated digital baseband signal and transmit it; the signal transmitter USRP B210#1 receives and processes the modulated digital baseband si...

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Abstract

The invention discloses a fast radio frequency spectrum detection method and system. According to the method, a general software radio platform GNU Radio and general hardware USRP are used for receiving radio signals and carrying out digital signal processing. The monitoring equipment USRP receives the radio frequency signal generated by the transmitting equipment and processes the radio frequency signal to form a digital baseband signal; the GNU Radio general software radio platform adopts an energy detection algorithm to carry out coarse scanning and fine scanning processing on a digital baseband signal. The frequency spectrum distribution condition is monitored in real time, and after the frequency spectrum information of the real signal judged with the set dynamic threshold is automatically compared with the authorized frequency spectrum information provided by the radio supervision mechanism, the abnormal signal is quickly screened out, and the frequency spectrum information of the abnormal signal is automatically stored and displayed. According to the invention, the energy-detection-based frequency spectrum sensing system established by adopting the software radio platform GNURadio and the universal hardware USRP can improve the radio frequency spectrum sensing rate and achieve the purpose of rapidly detecting abnormal signals.

Description

technical field [0001] The invention belongs to the field of radio communication, and relates to a spectrum sensing system based on a software radio platform GNURadio and adopts energy detection as a main algorithm, in particular to a fast radio spectrum detection method and system. Background technique [0002] Wireless communication has always been a rapidly growing industry in the communication industry. The development of wireless communication has created new technologies and provided convenience for high-bandwidth communication services. Since the beginning of the 20th century, there has been rapid development in the field of radio spectrum, such as short-distance transmission Bluetooth, cordless phones, etc. Now our commonly used Wi-Fi, as well as emerging 5G technologies, all require a large amount of spectrum resources. The development of wireless communication technology has brought convenience to people's life, but the shortage of wireless spectrum resources limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04W24/08H04B1/40
CPCH04B1/40H04B17/00H04W24/08
Inventor 任招娣邓周虎马晓龙李强王俊楠王魏陈思凡余昊李承志段雯静郑操
Owner NORTHWEST UNIV(CN)
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