System and method for simultaneous monitoring of multiple physical channels in broadband micropower

Abstract

The invention claims protection of a system and method for simultaneously monitoring multiple physical channels in broadband micropower, belonging to the field of the Internet of Things. Including: analog radio frequency module, A / D sampler module and digital baseband processing module, where the analog radio frequency module is used to complete the reception of the entire bandwidth of multiple physical channels, determine the center frequency point of the radio frequency and the radio frequency bandwidth, and process the received radio frequency signal The down-conversion is processed into an analog baseband signal; the A / D sampler module is used to complete the conversion from the analog baseband signal to the digital baseband signal, and the sampling clock of the A / D sampler meets the requirements of the sampling theorem; the digital baseband processing module is used to convert the digital baseband signal first Fast Fourier transform is performed on the baseband signal to obtain the frequency domain information of the entire bandwidth of the receiving channel, and then according to the definition of the physical channel bandwidth, the entire channel bandwidth is divided into corresponding bandwidths of each physical channel, and finally the frame header is carried out on the physical channel with the signal Detect and interpret frame data body content.

Description

System and method for simultaneous monitoring of multiple physical channels in broadband micropower technical field The invention belongs to the field of Internet of Things communication, and in particular relates to the Internet of Things terminal to scan a plurality of physical channels and monitor method of viewing. Background technique In the field of Internet of Things communication, due to wide application range, the amount of communication service data is relatively small, in addition to the current spectrum Resources are tight, and it is difficult to allocate a fixed frequency band that can be occupied for a long time in the IoT system for networking. In IoT communication, generally only shared frequency bands can be used, that is, multiple systems share a common frequency band, also known as ISM frequency. part. The PLC broadband micro-power wireless communication system is a typical system using the ISM frequency band, occupying 470MHz to The 510MHz band...

AI Technical Summary

Problems solved by technology

This reduces the wireless resource utilization rate of the Internet of Things, and is not conducive to improving the transmission rate and throughput of the Internet of Things system, which limits the promotion and application of the wireless Internet of Things system

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