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

Multiple-in and multiple-out communication method of signal asynchronous transmission

A technology of multiple input and multiple output, communication method, applied in the field of communication using multiple antennas, can solve the problem that the transmitter does not have delay diversity gain, affects the link quality and system capacity, and the receiver has low receiving diversity.

Inactive Publication Date: 2009-03-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the multiple-input multiple-output communication method using hierarchical space-time codes, since the signals are transmitted simultaneously at the transmitting end, the transmitting end does not have the gain brought by delay diversity, and the receive diversity degree of the receiving end is low, which affects the link quality and system capacity
Aiming at the shortcomings of existing MIMO communication methods, currently known literature, patents and related publications have not yet provided a signal asynchronously transmitting MIMO communication method

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
  • Multiple-in and multiple-out communication method of signal asynchronous transmission
  • Multiple-in and multiple-out communication method of signal asynchronous transmission
  • Multiple-in and multiple-out communication method of signal asynchronous transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0114] A multiple-input multiple-output communication method for asynchronous signal transmission provided by the present invention includes two parts: a transmitter and a receiver, such as figure 2 , image 3 shown. An embodiment of the method is provided below, the number of transmitting antennas M=2, the number of receiving antennas N=2, the frame length of the data frame is S=2, E s =1, the average power distribution is adopted, the baseband pulse waveform adopts a rectangular wave, and the delay of the transmitting antenna is τ 1 = 0, τ 2 =0.6T s ,T s = 1μs, the added guard interval T g1 =0.6T s ,T g2 =0, the data in the guard interval is zero.

[0115] In the case of the above parameters, the specific implementation steps of a multiple-input multiple-output communication method for asynchronously transmitting signals provided by the present invention are described as follows. The transmitter is as follows: figure 2 Shown:

[0116] At the transmitting end, aft...

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

This invention discloses a MIMO communication method for signal asynchronous emission characterizing that it applies a hierachical empty time code structure and an emitter delayes signals of different emission antennas and emits them asynchronously, a receiver applies an asynchronous MIMO test method to test signals, in which, the gain brought with time delay hierarchy is used by different time dealy to emission signals at the emission end and at the receiving end, the receiving hierarchy is increased by the MIMO test method to increase the link quality of the MIMO system.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to a communication method using multiple antennas in the communication technology. Background technique [0002] Existing multiple input multiple output (Multiple Input Multiple Output, MIMO) communication methods are all based on synchronous signal transmission. Because the MIMO communication method has good spectrum efficiency, high system capacity and good communication quality, it is one of the key technologies of the new generation wireless communication system. [0003] The MIMO communication method adopts space-time coding technology, and there are two main types of space-time codes used: space-time trellis codes (Space Time Trellis Codes, STTC) and space-time block codes (Space Time Block Codes, STBC) based on transmit diversity. ; Layered Space Time Codes (LSTC) based on non-transmit diversity. [0004] Space-time trellis code is a design that comprehensively consid...

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 Patents(China)
IPC IPC(8): H04L1/06
Inventor 唐友喜孔婷赵宏志邵士海
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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