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

IR-HARQ power distribution algorithm based on digital modulation

A technology of digital modulation and distribution algorithm, applied in power management, digital transmission system, using return channel for error prevention/detection, etc., to achieve the effect of optimal data throughput rate

Active Publication Date: 2021-01-12
NANTONG UNIVERSITY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although better performance results can also be obtained, the use of digital modulation in practical applications is unavoidable

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
  • IR-HARQ power distribution algorithm based on digital modulation
  • IR-HARQ power distribution algorithm based on digital modulation
  • IR-HARQ power distribution algorithm based on digital modulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The technical solutions of the present invention will be described below in conjunction with the accompanying drawings and embodiments.

[0042] A kind of IR-HARQ power allocation algorithm based on digital modulation, specifically comprises the following steps:

[0043] Step S1, calculating the mutual information in the IR-HARQ link based on digital modulation;

[0044] Step S2, calculating the average throughput rate in the link;

[0045] Step S3, performing power allocation using a hybrid transmission strategy.

[0046] Specifically, the step S1 includes:

[0047] Step S1.1, establish a system model, assuming that at the kth transmission, the discrete signal at the receiving end is:

[0048] the y k =g k h k x k +w k ,

[0049] where x k is the transmitted signal, y k For receiving signal, w k is additive white Gaussian noise, h k is the channel gain of the current transmission round, g k is the transmit power during the kth transmission;

[0050] Step...

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 technical field of mobile communication, and in particular, relates to an IR-HARQ power distribution algorithm based on digital modulation, wherein the algorithm compriseschannel mutual information calculation based on digital modulation, a maximum modulation mutual information strategy, an approximate expression of MMSE, a hybrid transmission strategy, a threshold value of the hybrid transmission strategy and the like. Under the condition that the channel state information fed back by a transmitting end is known, the MMSE and the approximate expression thereof inthe IR-HARQ link based on convex optimization and digital modulation are utilized, the mixed transmission strategy combining the maximum modulation mutual information strategy and the inverse channeltransmission strategy is adopted, the threshold value is set to adjust power distribution in a self-adaptive mode, the average data throughput rate of the link is optimized, and the upper limit of the rate of digital modulation can be quickly approached within limited transmission times, so that the good data throughput rate is obtained.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an IR-HARQ power allocation algorithm based on digital modulation. Background technique [0002] Hybrid Automatic Repeat reQuest (Hybrid Automatic Repeat reQuest, IR-HARQ) is a technology formed by combining Forward Error Correction Coding (FEC) and Automatic Repeat reQuest (ARQ). That is, the receiving end uses FEC technology to correct the part of all errors that can be corrected, and then judges the data packets that cannot be corrected through error detection, and finally discards the data packets that cannot be corrected, and requests the transmitter to resend the same data packet. [0003] The prior art considers ideal channel coding and optimizes the average data throughput rate in the IR-HARQ transmission link without digital modulation. Although better performance results can also be obtained, the use of digital modulation in practical applications is unavo...

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
IPC IPC(8): H04W52/24H04L1/18
CPCH04L1/1812H04W52/241
Inventor 季晨曹钰杰章国安
Owner NANTONG UNIVERSITY
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