Unlock instant, AI-driven research and patent intelligence for your innovation.

Communication method and apparatus using g-ofdm for high speed wireless communication

A technology of G-OFDM and communication method, which is applied in the field of communication and devices using G-OFDM for high-speed wireless communication, which can solve the problem that the usage cannot be fully satisfied, the prototype filter has a large implementation complexity, and is not suitable for commercialization and other issues, to achieve the effect of easy implementation or use, high cost performance, and reduced inter-channel interference

Inactive Publication Date: 2018-08-03
TUNITEL
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the other hand, the prototype filter (prototype filter) of FBMC technology is very large and the implementation complexity is very large, so when it is developed as a component (device), it constitutes a factor that induces a lot of power consumption, and there are also some problems that are not suitable for commercialization. question
[0010] The amount of wireless communication usage is expected to increase geometrically in the future, and it is expected that even if the above-mentioned various methods are used, the amount of usage cannot be fully satisfied. Therefore, it is urgent to develop more effective frequency usage methods

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
  • Communication method and apparatus using g-ofdm for high speed wireless communication
  • Communication method and apparatus using g-ofdm for high speed wireless communication
  • Communication method and apparatus using g-ofdm for high speed wireless communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0199] Example 1: G(8,6)-OFDM

[0200] First, based on the initial matrix and jump matrix According to formula (22) get here, and They are shown in Table 1(a) and 1(b), respectively. Referring to Table 1(a) and 1(b), we can see that when the first column is used as a pilot vector, for the first element that is not 0, all elements of other vectors become 0 , so the first column can be used as Pilot vector.

[0201] [Table 1(a)]

[0202]

[0203] [Table 1(b)]

[0204] 0.0000

0.0000

0.0000

0.0000

0.0000

0.0000

0.0000

0.0000

0.0013

0.0022

-0.0013

0.0000

0.0000

0.0043

-0.0034

0.0000

-0.0009

0.0000

0.0065

0.0000

0.0000

0.0000

0.0000

0.0000

-0.0087

0.0000

0.0000

0.0000

0.0000

0.0000

0.0000

-0.0108

-0.0086

0.0000

-0.0023

0.0000

0.0000

0.0000

0.0075

-0.0130

-0.0075

0.0000

0.0000

0.0000

0.0032

0.0000

0...

Embodiment 2

[0211] Example 2: G(7,5)-OFDM

[0212] First, based on the initial matrix and jump matrix According to formula (22) get here, and They are shown in Table 3(a) and 3(b), respectively. Referring to Table 3(a) and 3(b), it can be seen that when the first column is used as a pilot vector, for the first element that is not 0, all elements of other vectors become 0 , so the first column can be used as Pilot vector.

[0213] Figure 13 is the matrix G (7×5) The column of is plotted in the time domain, it can be seen that all curves start from 0 and end with 0. This does not introduce drastic changes to the function used as the carrier, preventing spectral spread. Figure 14 is to draw the columns of the matrix G in the frequency domain, and it can be seen that the spectral characteristics of each column are different. Figure 15 It is a comparison of the PSD (powerspectral density) of the existing OFDM and the G-OFDM of the present invention. From Figure 15 It ...

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 purpose of the present invention is to provide a communication method and apparatus using G-DFDM, the method simultaneously executing a filter bank (FB) method, which reduces inter-channel interference by improving OFDM technology which is the present fourth generation wireless communication technology, and a method in which a plurality of layer channels are superposition multiplexed on the same frequency band using a layer composite function and then transmitted to dramatically enhance frequency allocation and effectiveness.

Description

technical field [0001] The present invention relates to a communication method and device using generalized OFDM (Generalized OFDM (Orthogonal Frequency Division Multiplexing: Orthogonal Frequency Division Multiplexing), hereinafter referred to as "G-OFDM"). This method can be applied to both wired and wireless communication, but since the wired communication method is well known, it is mainly described in the wireless communication method. [0002] Wireless communication refers to communication that uses radio waves to transmit and receive various information such as voice and video without physical wire connection. As a part of electromagnetic waves, radio waves can transmit information at the speed of light, and can pass through most solids, vacuum, atmosphere, etc., and are usefully used for wireless communication. Radio waves are classified into various frequency bands according to wavelength or frequency, and the classification according to wavelength length includes lo...

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): H04L27/26
CPCH04L27/0008H04L27/2666H04L27/26414H04L27/26538H04L27/2697H04L27/26416H04L27/206H04L27/2628H04L27/265H04L5/0007G06F17/16H04L5/003
Inventor 金明燮成真淑
Owner TUNITEL