Wireless communication method and device

Abstract

The invention firstly provides a wireless communication method, which is applied to a sending side and is used for modulating signals to different frequencies at an intermediate frequency and then synthesizing the signals into a broadband signal; carrying out digital-to-analog conversion on the broadband signal and then sending the broadband signal to a radio frequency end; at a receiving side, receiving a plurality of user signals from different directions; carrying out time modulation on the signal and sending the signal to a radio frequency end; performing digital-to-analog conversion on the signal entering the radio frequency end after passing through a single-channel radio frequency receiver; and filtering the signals subjected to digital-to-analog conversion to obtain different usersignals with different frequencies. The method has the advantages of high frequency spectrum utilization rate, low radio frequency link complexity, low cost investment and low baseband processing complexity, is suitable for the field of satellite Internet, is also suitable for the fields of Internet of Things, metropolitan area networks, smart storage, smart manufacturing and the like, and relieves the restriction of network resources on the communication rate of mobile users and the number of users.

Description

technical field [0001] The invention relates to the fields of antenna technology and wireless communication technology engineering, and in particular provides a novel wireless communication method and device. Background technique [0002] In modern society, people's demand for information interaction has turned to the barrier-free connection between people and people, people and things, and things and things. However, the development logic of the traditional mobile communication system does not meet the goal of the Internet of Everything. Although the transmission rate from 4G to 5G has increased by more than a hundred times, it can meet the information transmission needs of the Internet of Everything to a certain extent, but the traditional mobile communication network mainly covers Densely populated areas, and for vast mountainous areas, grasslands and other areas, the cost performance is obviously not enough to support its commercial application. Today, when the scope of...

AI Technical Summary

Problems solved by technology

A larger number of satellites means that more spectrum resources are needed. Although the Ka-band can use a bandwidth of several GHz, the large number of network nodes dominated by low-orbit satellites and the large channel bandwidth required for high-speed transmission will still cause spectrum problems. resource constraints

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