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Modulation signal generation method and terahertz wireless transmission method and system

A modulated signal, wireless transmission technology, applied in the field of wireless transmission, can solve the problems of high power consumption and cost, low cost and efficient transmission scheme, no multi-user access, etc., to improve spectral efficiency and transmission capacity, reduce difficulty , the effect of reducing system cost

Active Publication Date: 2021-11-30
PURPLE MOUNTAIN LAB +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Pulse Amplitude Modulation (PAM) and discrete multi-tone modulation cannot achieve multi-user access through a simple IM / DD scheme, and often require huge power consumption and cost
[0003] Therefore, in the field of IM / DD-based terahertz wireless transmission systems, there is still no efficient transmission scheme that can achieve multi-user access and lower cost

Method used

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  • Modulation signal generation method and terahertz wireless transmission method and system
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  • Modulation signal generation method and terahertz wireless transmission method and system

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Embodiment Construction

[0040]In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of t...

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Abstract

The invention relates to a modulation signal generation method and a terahertz wireless transmission method and system. The modulation signal generation method comprises the following steps: distributing a sub-band for each piece of user data, and carrying out amplitude modulation on each piece of user data to obtain a real number signal; obtaining a sub-band modulation signal based on each real number signal; and obtaining a multi-band modulation signal according to each sub-band modulation signal. According to the modulation signal generation method, the sub-bands are allocated to the user data, and the amplitude modulation is performed on the data in the sub-bands, so the data of multiple users can be transmitted in the same channel at different rates, the spectrum efficiency and the transmission capacity are improved, and the distribution of the data of multiple users is more flexible.

Description

technical field [0001] The invention relates to the technical field of wireless transmission, in particular to a modulation signal generation method and a terahertz wireless transmission method and system. Background technique [0002] In order to meet the demand for higher transmission rate and larger transmission capacity of mobile data services, the terahertz (0.1THz-10THz) frequency band has attracted a lot of research interest in recent years due to its large bandwidth and high frequency. In order to further reduce the cost and simplify the system, the terahertz wireless transmission system based on intensity modulation (IM) and direct detection (DD) has been extensively studied. Compared with the coherent detection scheme, the system has lower complexity degree and cost. The terahertz wireless transmission system based on IM / DD combined with advanced modulation format and digital signal processing technology (DSP) is an effective solution for multi-user access. In re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/54H04B10/556H04B10/50
CPCH04B10/541H04B10/5561H04B10/503Y02D30/70
Inventor 朱敏张教李沁茹华炳昌邹昱聪雷明政蔡沅成李爱杰黄永明尤肖虎
Owner PURPLE MOUNTAIN LAB