A kind of communication device and communication method based on ook modulation and demodulation

Abstract

The invention discloses a communication device based on OOK modulation and demodulation and a communication method thereof, comprising a transmitting device and a receiving device, the transmitting device is provided with a digital signal modulation unit, and the receiving device is provided with a digital signal demodulation unit and a signal-to-noise ratio monitoring module; The digital signal modulation unit is provided with a mobile time slot module, through which the time slot is automatically inserted according to the symbols, which can not only avoid the problem of inter-symbol crosstalk, but also ensure the purity of the communication rate; the digital signal demodulation unit is before the demodulation module. Set the preprocessing module; the preprocessing module performs sliding window accumulation and frequency division processing on the signal, selects the best frequency division for demodulation, and the signal-to-noise ratio monitoring module monitors the signal-to-noise ratio characteristics of the signal in real time, and can automatically adjust the demodulation parameters. Efficiently and reliably completes the demodulation of various signals, and can effectively identify weak signals submerged in noise; at the same time, it realizes simple, no complicated operations, strong real-time performance, safety and reliability, high robustness, strong environmental adaptability, and self-healing. sex.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a communication device based on OOK modulation and demodulation and a communication method thereof. Background technique [0002] In the field of communication, modulation technology and demodulation technology are the most critical, which directly affect the reliability and efficiency of the communication system. OOK (On-Off Keying), that is, on-off keying, is a binary amplitude keying technology. As an early modulation method, it is widely used in underwater visible light communication, free space optical communication, ultra-broadband mobile communication, optical fiber communication and other fields due to its simple coding, low implementation cost and high spectral efficiency. [0003] OOK signal has the obvious advantage of being simple to implement, but it is susceptible to external interference and sudden factors, which will cause uncertain factors such as d...

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Problems solved by technology

[0007] Technical purpose: In view of the shortcomings that the existing communication modulation and demodulation process is easily interfered by external factors and easily causes problems such as intersymbol crosstalk, the present invention discloses an adaptive adjustment solution that can monitor the signal-to-noise ratio characteristics of the signal to be demodulated in real time. Adjusting parameters, can resist a series of problems such as external interference and intersymbol crosstalk, and realize simple, simple operation, high robustness communication device and communication method based on OOK modulation and demodulation

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