Transmitting device, receiving device, terahertz wireless communication system and method

Abstract

The invention discloses a terahertz wireless communication system which comprises a transmitting device and a receiving device. The transmitting device comprises a transmitting baseband processing module which is used for processing received multi-channel user data so as to generate a subcarrier multiplexing signal; a central station module which is used for modulating the subcarrier multiplexing signal on a first optical carrier with a first frequency to generate an optical signal; and a base station module which is used for performing beat frequency processing on the optical signal to generate a photon terahertz signal with a preset frequency. The receiving device comprises a terminal receiving module which is used for receiving the terahertz signal and carrying out frequency mixing processing and power compensation on the terahertz signal to obtain an intermediate frequency signal with a third frequency; and a receiving baseband processing module which is used for performing down-conversion processing on the intermediate frequency signal in a digital frequency domain to obtain a baseband signal, and then de-multiplexing the baseband signal into each path of independent and parallel user signal. The terahertz wireless communication system has a relatively high communication transmission rate.

Description

technical field [0001] The present invention relates to the technical field of terahertz communication, in particular to a transmitting device, a receiving device and a communication method for terahertz wireless communication. Background technique [0002] With the advent of the 5G era, applications such as 4K / 8K video, virtual / augmented reality, cloud computing, and the Internet of Things have put forward higher requirements for real-time communication rates, while traditional low-frequency communication can no longer meet the increasing data traffic. urgent needs. [0003] The traditional method of microwave frequency multiplication to generate terahertz is limited by the development of silicon-based integration technology of indium phosphide materials and gallium arsenide materials. It is still facing technical challenges to realize high-speed communication systems above 100Gbit / s in higher frequency bands. [0004] At present, most terahertz communication systems adopt...

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Problems solved by technology

[0004] At present, most terahertz communication systems adopt a single-carrier scheme, which only uses a part of the spectrum resources in the terahertz channel, and cannot make full use of the advantages of large terahertz bandwidth, which limits the communication transmission rate of the terahertz communication system and greatly reduces the use of spectrum. efficiency

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