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

Space Shift Keying Modulation and Demodulation Method for Binary Digital Signals in Multiple-Input and Multiple-Output Systems

A digital signal and space-shift keying technology, applied in transmission systems, digital transmission systems, phase-modulated carrier systems, etc., can solve problems such as the gap in spectral efficiency, the inability to arbitrarily adjust the number of transmit antennas and the number of streams transmitted at the same time, etc. Achieve the effect of low bit error rate performance, flexible modulation method and wide application range

Inactive Publication Date: 2017-01-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method is only for a fixed antenna configuration, and cannot arbitrarily adjust the number of transmitting antennas and the number of streams transmitted at the same time, and there is still a gap between the spectral efficiency achieved by the traditional VBLAST algorithm.

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
  • Space Shift Keying Modulation and Demodulation Method for Binary Digital Signals in Multiple-Input and Multiple-Output Systems
  • Space Shift Keying Modulation and Demodulation Method for Binary Digital Signals in Multiple-Input and Multiple-Output Systems
  • Space Shift Keying Modulation and Demodulation Method for Binary Digital Signals in Multiple-Input and Multiple-Output Systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0059] Here, the number of transmitting antennas is 7, and the number of receiving antennas is 4, that is, N t =7,N r =4 MIMO system as an example to illustrate:

[0060] Assume that the system transmits K=4 channels of data in total, and each channel of data contains b=2 bits, that is, the system sends data in groups of Kb=8 bits. Here it is assumed that the 8bit data sent is 11010110. First calculate the original antenna mapping number corresponding to the 4 channels of data. The calculation rule is to convert binary to decimal and add 1 to get n 1 = 4, n 2 = 2, n 3 = 2, n 4 =3. For the system of K=4, the modulation symbols adopt 4QAM symbols, that is, the modulation symbols of 4 antennas are

[0061] The first data stream modulation, first sort the 7 antennas Antenna number set A is {T 1 , T 2 , T 3 , T 4 , T 5 , T 6 , T 7},T 1 , T 2 , T 3 , T 4 , T 5 , T 6 , T 7 are the numbers of each antenna respectively. The set B of available antenna numbers i...

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 the field of wireless communications, and discloses a binary digital signal space shift keying modulation and demodulation method for a multi-input multi-output system. The multi-input multi-output system comprises Nt transmitting antennas and Nr receiving antennas. The input data is divided into K data streams to carry out SSK (Space Shift Keying) modulation; according to the transmitting antennas corresponding to the original mapping serial number from n1, n2 to nK of the K data streams on the Nt transmitting antennas, K modulation symbols are respectively mapped to the different transmitting antennas and transmitted. The invention further provides a corresponding demodulation method. The modulation and demodulation method can greatly improve the spectrum efficiency of the SSK technology, and under the same frequency efficiency, can achieve lower error rate performance than the traditional VBLAST (Vertical Bell Layered Space Time) system.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a binary digital signal space-shift keying modulation and demodulation method of a multiple-input multiple-output system. Background technique [0002] Multiple Input Multiple Output (MIMO) technology, as one of the key technologies in the future wireless communication field, greatly improves link reliability and system spectrum efficiency (Spectrum Efficient, SE). A typical MIMO system is the layered space-time structure (VBLAST structure) proposed by Bell Laboratories. [0003] The VBLAST structure adopts a method in which multiple signals are multiplexed in space, and all antennas transmit signals at the same time. However, this method increases the throughput of the system and also produces inter-channel interference (ICI). At the same time, the complexity of the maximum likelihood detection algorithm (ML) increases exponentially with the increase of transmitting antennas...

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): H04L27/18H04L1/00
Inventor 李磊方舒巫建
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