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Modulator, demodulator, and wireless communication system

A modulator and demodulator technology, applied in the modulation carrier system, FM carrier system, transmission system, etc., can solve the problem of high power consumption of the terminal, and achieve the effect of low power consumption

Active Publication Date: 2019-11-22
SHANGHAI PANCHIP MICROELECTRONICS CO LTD
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Problems solved by technology

However, the power consumption of terminals using direct sequence spread spectrum technology is relatively large

Method used

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  • Modulator, demodulator, and wireless communication system
  • Modulator, demodulator, and wireless communication system

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Embodiment Construction

[0024] In the prior art, the direct sequence spread spectrum technology is known and can achieve a high level of coding gain, realize a good anti-noise ability, and realize long-distance signal transmission. For example, the Global Positioning System (GPS) adopts a direct spread spectrum method to achieve better anti-noise capability and long-distance signal transmission. However, the power consumption of the GPS terminal is large.

[0025] In the embodiment of the present invention, a modulator is used to generate a target chirp signal, and a demodulator is used to demodulate the target chirp signal. In the wireless communication system, since the target chirp signal is used to obtain the spread spectrum gain of the target chirp signal, the transmission distance is improved under the same power consumption, so while the long-distance signal transmission can be realized, the system will not increase power consumption.

[0026] In order to make the above objects, features and...

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Abstract

The invention discloses a modulator, a demodulator and a wireless communication system. The wireless communication system comprises a modulator and a demodulator. The modulator is suitable for generating a target linear frequency modulation signal, wherein the target linear frequency modulation signal is a signal of which the frequency linearly changes along with time; wherein the phase of the target linear frequency modulation signal is determined by the initial frequency and frequency stepping of the target linear frequency modulation signal, and the frequency stepping, the bandwidth of thetarget linear frequency modulation signal and the spreading factor of the target linear frequency modulation signal are determined. The demodulator is suitable for demodulating the target linear frequency modulation signal. According to the scheme, power consumption can be reduced while long-distance signal transmission is realized.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a modulator, a demodulator and a wireless communication system. Background technique [0002] Wireless communication technology has achieved rapid development worldwide, and has become a hot technology of common concern in the global IT and communication fields. In recent years, with the development of Internet of Things technology, the construction of Internet of Things in the world is being fully rolled out, and the market demand for wireless communication technology is constantly emerging. [0003] In the field of wireless communication technology, the transmission rate of the communication system is continuously increasing. The fourth generation mobile communication technology (4G) has brought us into the era of mobile Internet; now we are ushering in the fifth generation mobile communication technology (5G), which has high frequency and high speed Its theoretical peak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/12H04L27/148
CPCH04L27/122H04L27/148Y02D30/70H04L12/16
Inventor 潘程浩吴川
Owner SHANGHAI PANCHIP MICROELECTRONICS CO LTD
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