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

Peak average power rate control method, receiving end and transmitting end

A technology of peak-to-average power ratio and control method, applied in the field of data transmission, can solve problems such as large amount of calculation, and achieve the effect of improving accuracy and reducing transmission amount

Inactive Publication Date: 2009-07-15
ZHEJIANG UNIV +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0044] The present invention provides a peak-to-average power ratio control method, a receiving end and a transmitting end in a MIMO-OFDM system, which are used to solve the problem that the calculation amount is relatively large when the existing linear PAPR reduction method is applied to the MIMO-OFDM system;

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
  • Peak average power rate control method, receiving end and transmitting end
  • Peak average power rate control method, receiving end and transmitting end
  • Peak average power rate control method, receiving end and transmitting end

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0103] After the present invention further studies the MIMO-OFDM system using OSTBC technology, among the two data streams output by the same orthogonal space-time block code encoder, the data stream transmitted on antenna 1 and the data stream on antenna 2 have the same peak-average Statistical characteristics of the power ratio PAPR, that is, the odd symbol data on antenna 1 and the even symbol data on antenna 2 are conjugate, and the even symbol data on antenna 1 and the odd symbol data on antenna 2 are negatively conjugated. Further research found that the weight vector searched for the even symbol data on antenna 1 is the conjugate vector of the odd symbol data weight vector on antenna 2, and the weight vector searched based on the odd symbol data on antenna 1 is Conjugate vector of even symbol data weight vector.

[0104]The proof process of the above conclusion is as follows:

[0105] Conclusion 1. The data stream on antenna 1 and the data stream on antenna 2 have the ...

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 present invention relates to data transmission technology, in particular to a peak-to-average power ratio control method in a MIMO-OFDM system, a receiving end and a transmitting end, which are used to solve the problem of calculating and further solve the problem of how to improve the PAPR reduction effect of data in the MIMO-OFDM system. According to the technical solution of the present invention, based on the relationship between the parity symbols in the weight vectors in the two data streams encoded by OSTBC technology, the calculation amount is reduced to half of the original, the calculation complexity is reduced, and side information can be reduced The amount of transmission, thereby improving the correctness of side information transmission; further, the present invention proposes a technical solution that combines the linear PAPR reduction method with Clipping, which can further improve the PAPR reduction effect.

Description

technical field [0001] The invention relates to data transmission technology, in particular to a peak-to-average power ratio control method, a receiving end and a transmitting end in a MIMO-OFDM system. Background technique [0002] MIMO-OFDM (Multi Input Multi Output-Orthogonal Frequency Division Multiplexing, multi-input multi-output orthogonal frequency division multiplexing) system has high spectrum utilization, data transmission rate and large channel capacity, and is bound to become a new generation of mobile communication core technology solutions. [0003] However, the MIMO-OFDM system has the same defect as the OFDM system, that is, there is a very high PAPR (Peak-to-Average Power Ratio, peak-to-average power ratio). The relatively high PAPR means that when the signal passes through nonlinear devices such as power amplifiers, the power amplifier is required to have a large dynamic range, otherwise nonlinear distortion will occur, and the harmonics generated by nonl...

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): H04L27/26
Inventor 张朝阳洪善艳王吉滨楼群芳
Owner ZHEJIANG 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