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

Minimum transmitting power adaptive modulating method based on service quality requirement

A technology with minimum transmission power, applied in digital transmission systems, electrical components, error prevention, etc., can solve problems such as high computational complexity, inability to give a closed-form solution to the minimum transmission power algorithm, adverse effects, etc., to achieve low operation effect of complexity

Inactive Publication Date: 2007-09-05
SHANGHAI JIAO TONG UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This recursive discretization method cannot give a closed-form solution to the minimum transmit power algorithm, and its computational complexity is relatively high, which will adversely affect practical applications

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
  • Minimum transmitting power adaptive modulating method based on service quality requirement
  • Minimum transmitting power adaptive modulating method based on service quality requirement
  • Minimum transmitting power adaptive modulating method based on service quality requirement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 shows the structural block diagram of the MIMO MIMO system with minimum transmission power. At the transmission end, the source bit stream is allocated to each antenna branch through bit allocation, and then the transmission signal is formed by modulation and transmission weighting. ; At the receiving end, the received signal is demodulated and multiplexed after being weighted, and finally the received bit stream is obtained. For such a system, the steps of applying the present invention to carry out adaptive modulation are as follows:

[0021] 1. Divide sub-channels:

[0022] For the MIMO system shown in Figure 1, the signal transceiver model is as follows:

[0023] r=Hs+n (1)

[0024] Among them, r represents the received signal, s represents the transmitted signal, H represents ...

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

An adaptive modulation method of minimum emission power based on service quality requirement includes giving out closed solution of system minimum emission power problem under channel information feedback condition, carrying out discretization treatment to closed solution and adjusting modulation order of sub channel till current modulation order sun of all sub channels is equal to object transmission rate, confirming that modulation order and emission power of each sub channel at this point is optimum, then finalizing distribution of bit and power.

Description

technical field [0001] The invention relates to a minimum transmission power self-adaptive modulation method based on service quality requirements, which can enable a multiple-input multiple-output system to achieve the service quality required by users with the minimum total transmission power. It belongs to the technical field of wireless communication. Background technique [0002] In recent years, in order to make full use of the capacity provided by MIMO channels as much as possible, adaptive modulation technology has been considered as one of the most effective means. It can adaptively select the bit and power allocation scheme of the transmitter according to the channel state change. At present, the dominant schemes in this regard are all implemented by maximizing the system capacity under the premise of a given total transmission power. The advantage of this type of scheme is that it can ensure that the system can realize data transmission at the maximum possible r...

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): H04L1/00
Inventor 何晨王智鹰蒋铃鸽
Owner SHANGHAI JIAO TONG 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