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Terahertz signal receiving device and method and signal transmission system

A signal receiving device and signal receiving technology, applied in the field of terahertz communication, can solve the problems of heavy DSP processing burden and high data rate, and achieve the effect of improving overall performance and reducing burden

Active Publication Date: 2022-01-04
PURPLE MOUNTAIN LAB +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The data rate after sampling is very high, and it will be a heavy burden to directly process it to the back-end DSP

Method used

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  • Terahertz signal receiving device and method and signal transmission system
  • Terahertz signal receiving device and method and signal transmission system
  • Terahertz signal receiving device and method and signal transmission system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]This application provides a terahertz signal receiving device, the receiving device includes several groups of terahertz wireless receiving antennas 15, a mixer 16, an amplifier 17, a local oscillator source 19 and a signal restoration module;

[0055] Wherein, the terahertz signal received by each terahertz wireless receiving antenna 15 and the electric radio frequency signal generated by the local oscillator 19 are mixed in the mixer 16 to obtain an intermediate frequency signal;

[0056] The intermediate frequency signal is sent to the signal restoration module after passing through the amplifier 17. The signal restoration module first converts the amplified intermediate frequency signal into a baseband signal through down conversion, and then performs digital signal processing on the baseband signal to restore it to a multi-channel polarization multiplexed signal.

[0057] The signal receiving device 14 mixes the received terahertz wireless signal to obtain an interme...

Embodiment 2

[0070] Based on the above receiving device, the present application also provides a terahertz signal receiving method, such as Figure 5 As shown, the method includes the following steps:

[0071] S1, receiving a terahertz signal;

[0072] S2, mixing the terahertz signal with the electric radio frequency signal generated by the local oscillator 19 to obtain an intermediate frequency signal;

[0073] S3, amplifying the intermediate frequency signal;

[0074] S4, converting the amplified intermediate frequency signal into a baseband signal through down-conversion, and then performing digital signal processing on the baseband signal to restore it to a multi-channel polarization multiplexed signal.

[0075] Further, S4 contains the following:

[0076] Perform analog-to-digital conversion on the baseband signal;

[0077] Digital signal processing is performed on the converted baseband signal to restore it to multiple polarization multiplexed signals.

[0078] Further, S4 conta...

Embodiment 3

[0091] Such as figure 1 As shown, based on the above receiving device, this embodiment is a wireless transmission system for optically generated terahertz signals. The wireless transmission system includes a central station CO unit 1, a remote base station unit 9, and a signal receiving device 14; wherein,

[0092] The central station unit 1 generates multiple polarization multiplexed signals, and the polarization multiplexed signals are amplified and sent to the remote base station unit 9;

[0093] The remote base station unit 9 is used to perform polarization diversity on the polarization multiplexing signal, and then perform optical coupling with an optical signal to generate a terahertz signal and send it to the signal receiving device 14;

[0094] The signal receiving device 14 mixes the received terahertz wireless signal to obtain an intermediate frequency signal, amplifies it with the optical amplifier 17, reduces the bandwidth of the receiving device through the down-c...

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Abstract

The invention provides a terahertz signal receiving device and method and a signal transmission system. The receiving device comprises a plurality of groups of terahertz wireless receiving antennas, a frequency mixer, an amplifier, a local oscillation source and a signal recovery module, wherein terahertz signals received by the terahertz wireless receiving antennas and electric radio frequency signals generated by the local oscillation source are mixed in the frequency mixer, and intermediate frequency signals are obtained; the intermediate frequency signal passes through the amplifier and then is sent to the signal recovery module, the signal recovery module firstly converts the amplified intermediate frequency signal into a baseband signal through down-conversion, then carries out digital signal processing on the baseband signal, and recovers the baseband signal into a multi-path polarization multiplexing signal. Three different effective implementation schemes are provided, baseband signal processing is completed, original signals are recovered, and a terahertz signal real-time, high-speed and high-performance wireless transmission system based on multi-subcarrier dual-polarization IQ modulation is achieved.

Description

technical field [0001] The present invention relates to the technical field of terahertz communication, in particular to a wireless transmission system, method and signal receiving device for optically generated terahertz signals. Background technique [0002] At present, most terahertz communication systems are single-carrier solutions, which can only realize the signal processing from single-channel digital-to-analog converter DAC to single-channel analog-to-digital converter ADC, and are limited by the development of ADC; single-carrier solutions only use terahertz channels Part of the spectrum resources in the terahertz system cannot make full use of the advantages of the large terahertz bandwidth, which limits the communication transmission rate of the terahertz communication system and greatly reduces the efficiency of spectrum use. The realization of high-speed and long-distance transmission is one of the main concerns of researchers. . [0003] Digital down-conversi...

Claims

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Application Information

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IPC IPC(8): H04B10/90H04B1/00
CPCH04B10/90H04B1/0032H04B1/0007Y02D30/70
Inventor 朱敏张教刘翔华炳昌邹昱聪蔡沅成雷明政李爱杰黄永明尤肖虎
Owner PURPLE MOUNTAIN LAB
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