Wired and wireless mixed signal generation system based on single optical modulator

A wireless signal and optical modulator technology, applied in fiber optic radio, transmission system, electromagnetic wave transmission system, etc., can solve problems such as complex system structure, achieve high spectrum utilization, increase spectrum efficiency, and simple structure

Pending Publication Date: 2020-09-11
FUDAN UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to further reduce the cost of the communication system, researchers have proposed to transmit wired signals and wireless signals in different frequency bands in the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wired and wireless mixed signal generation system based on single optical modulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described below in conjunction with specific examples and accompanying drawings.

[0021] Depend on figure 1 As shown, the wired and wireless mixed signal generation system based on a single optical modulator includes:

[0022] Signal generator 1, which generates baseband wireless signals and sends them to mixer 2;

[0023] The local oscillator source 4 generates a lower frequency local oscillator frequency;

[0024] The frequency multiplier 3 generates a lower-frequency local oscillator frequency multiplier for the local oscillator source 4, so that the output frequency is an integer multiple of the input frequency; it is sent to the mixer 2;

[0025] The mixer 2 moves the baseband wireless signal to the carrier frequency; then it is sent to the dual-polarized Mach-Zehnder optical modulator 6;

[0026] The signal generator 11 directly generates the baseband wired signal and sends it to the dual-polarized Mach-Zehnder optical mod...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of wireless and wired communication systems, and particularly relates to a wired and wireless mixed signal generation system based on a single optical modulator. A frequency multiplier and a low-frequency local oscillator source are used for generating a wireless frequency band carrier; the frequency of the wireless signal is moved to a wireless frequency band by using a frequency mixer; a laser generates laser and is connected to the optical input end of a dual-polarization Mach-Zehnder optical modulator, and a baseband line signal and a wireless signal are respectively connected to two point input ends of the dual-polarization Mach-Zehnder optical modulator; wired and wireless signals are modulated to two orthogonal polarization states of thelight through the light modulator respectively; after optical fiber transmission, a wired signal and a wireless signal are separated by an optical filter, and the wired signal and the wireless signalof an electric domain can be obtained after the two signals pass through a photoelectric detector respectively. The system has the advantages of being simple in structure, high in frequency spectrum utilization rate, low in device bandwidth requirement and low in cost, and will play a huge role in future communication networks.

Description

technical field [0001] The invention belongs to the technical field of wireless and wired communication systems, and specifically relates to a wired and wireless mixed signal generation system. Background technique [0002] With the rapid development of multimedia services and applications, the demand for high-capacity, low-latency wireless communication systems has become increasingly strong, and wireless communication systems are favored by researchers due to their wide range of applications. However, it is difficult to generate high-frequency wireless signals, the device bandwidth is limited, and its communication system has large losses and high costs, which limit its use in long-distance. The optical wireless communication system simultaneously solves the problems of bandwidth limitation and long-distance transmission of electrical devices, and has become the core technology of 5G and even future 6G systems. In order to further reduce the cost of the communication syst...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04B10/50H04B10/532H04B10/556H04B10/54H04B10/2575
CPCH04B10/503H04B10/532H04B10/5563H04B10/54H04B10/2575
Inventor 余建军魏一然
Owner FUDAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap