Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polarization multiplexing DD-OFDM-PON system and signal transmission method

A DD-OFDM-PON, polarization multiplexing technology is applied in the field of polarization multiplexing DD-OFDM-PON system and signal transmission to achieve the effects of good system robustness, improved data transmission rate, and good data recovery function

Inactive Publication Date: 2015-03-25
NORTHEASTERN UNIV
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Many OFDM-PON system architectures have been proposed one after another. They avoid the shortcomings of traditional TDM-PON and WDM-PON systems to a certain extent, and have high cost performance. There is still room for improvement in rate, data transmission rate, and cost; how to combine multiple advanced technologies, such as polarization multiplexing technology, radio frequency up-down conversion, direct detection technology, etc., to construct a more efficient OFDM-PON system, for future broadband access It has important theoretical research significance and practical application value

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
  • Polarization multiplexing DD-OFDM-PON system and signal transmission method
  • Polarization multiplexing DD-OFDM-PON system and signal transmission method
  • Polarization multiplexing DD-OFDM-PON system and signal transmission method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0067] In the embodiment of the present invention, a polarization multiplexing DD (Direct Detection, direct detection)-OFDM-PON system includes a signal transmitter and a signal receiver;

[0068] Such as figure 2 As shown, the signal transmitter in the embodiment of the present invention includes: a first OFDM baseband signal transmitter 2-1, a second OFDM baseband signal transmitter 2-9, a first radio frequency conversion module 2-2-1, a second radio frequency conversion module Module 2-2-2, third radio frequency transformation module 2-2-3, Hilbert transformation module 2-3, inverse Hilbert transformation module 2-10, external cavity semiconductor laser 2-4, Mach-Zehnder Modulator 2-5, wave splitter 2-6, first polarizer 2-7-1, second polarizer 2-7-2, first dual-arm Mach-Zehnder modulator 2-8-1, second Dual-arm Mach-Zehnder modulator 2-8-2, polari...

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 relates to a polarization multiplexing DD-OFDM-PON system and a signal transmission method, and belongs to the technical field of optical access networks. According to the polarization multiplexing DD-OFDM-PON system and the signal transmission method, radio frequency up conversion and radio frequency down conversion are adopted at the transmitting end and the receiving end of a system respectively; compared with an existing OFDM-PON system, the subcarrier using rate of the system is improved by one time. An optical-single-side-band modulation technology and a polarization multiplexing technology are adopted in the polarization multiplexing DD-OFDM-PON system and the signal transmission method, frequency spectrums of two polarization orthogonal signals are overlapped, so that the spectrum efficiency is improved by one time compared with a polarization multiplexing DD-OFDM-PON system with optical double-side bands or a DD-OFDM-PON system without the polarization multiplexing technology. An MIMO channel estimation technology is adopted in the polarization multiplexing DD-OFDM-PON system and the signal transmission method, so that the good data recovery function is achieved, the bit error rate performance of the system performance is similar to the 40 Gb / s system performance, and the system robustness is good.

Description

technical field [0001] The invention belongs to the technical field of optical access networks, and in particular relates to a polarization multiplexing DD-OFDM-PON system and a signal transmission method. Background technique [0002] With the continuous deepening of social informatization, new broadband services such as video sharing, high-definition IPTV, high-definition video surveillance, cloud computing, cloud storage, and mobile data transfer have emerged one after another. The demand for network capacity and network speed of these broadband services continues to grow. Therefore, it is very important to realize "high-speed access anytime, anywhere" in the access network. [0003] At present, Passive Optical Network (PON) is the most cost-effective broadband access technology widely accepted and promoted worldwide; traditional PON technology can be divided into Time Division Multiplexing PON , TDM-PON), wavelength division multiplexing passive optical network (Wavelen...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L25/02H04B10/556
CPCH04L27/2601H04J14/06H04L25/0202
Inventor 郭磊周玉芳刘业君于尧侯维刚宋清洋彭玉怀吴菁晶
Owner NORTHEASTERN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com