Unlock instant, AI-driven research and patent intelligence for your innovation.

Method to generate single carrier frequency division multiple address signal of uplink sharing channel

A single-carrier frequency division and shared channel technology, applied in diversity/multi-antenna system, multi-frequency code system, space transmit diversity and other directions, can solve the problems of increasing PAPR/CM value, destroying single-carrier characteristics, etc., and achieve low PAPR /CM value, effect of good time-domain diversity characteristics

Inactive Publication Date: 2012-11-14
ZTE CORP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of physical resource unit mapping, in order to obtain better time-domain diversity for each coding block, rearrangement is usually used, and the output after DFT (Discrete Fourier Transform) precoding is first mapped in the time domain , and then map on the frequency, however, the time-domain rearrangement in the resource mapping process will destroy the single-carrier characteristics and increase the PAPR / CM value of the uplink

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
  • Method to generate single carrier frequency division multiple address signal of uplink sharing channel
  • Method to generate single carrier frequency division multiple address signal of uplink sharing channel
  • Method to generate single carrier frequency division multiple address signal of uplink sharing channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The main idea of ​​the present invention is: in the generation process of the uplink shared channel single carrier frequency division multiple access signal, the step of time domain rearrangement is added between the coding block information modulation step and the DFT precoding step, or the rearrangement is fused into the DFT In precoding, the symbols in the coding block are evenly distributed on the time axis, so as to obtain good time domain diversity characteristics under the premise of maintaining single carrier characteristics.

[0030] Suppose the number of uplink shared channel bits transmitted in a subframe is M bit , and the corresponding number of uplink shared channel symbols transmitted in one subframe is M symb ,M SC The number of subcarriers included in the SC-FDMA symbols scheduled for transmission to a user PUSCH (Physical Uplink Shared Channel), L is M symb and M SC The ratio of , here in order to ensure that DFT is easy to implement, generally take...

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 method for generating single carrier FDMA signals of an up-line shared channel, which has a fine time domain diversity character and keeps a single-carrier character, low peak uniform power ratio and three times of measurement values, and the method includes the following steps: modulating code blocks after channel coding into symbols, carrying out re-arrangement to thesymbols and dispersed Fourier transformation pre-coding and mapping them to a physical resource unit and carrying out fast Fourier inverse transformation to generate single-carrier FDMA signals of the up-line shared channel.

Description

technical field [0001] The present invention relates to a long term evolution system (LTE, Long Term Evolution), in particular to a method for generating an uplink shared channel single carrier frequency division multiple access signal in the LTE system. Background technique [0002] With the development of mobile communication systems, the requirements for data transmission rates are getting higher and higher, so the application of access technology based on parallel multi-carrier multiple access in mobile communication systems is imperative. Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) is a common multi-carrier modulation technology, which is suitable for high-speed data transmission on broadband channels with severe frequency selective fading caused by multipath transmission. Moreover, the modulation and demodulation of the baseband signal can be realized by using Fast Fourier Transform (FFT, Fast Fourier Transform), thus h...

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): H04B7/26H04B7/04H04L27/26
Inventor 郁光辉夏树强杨扬
Owner ZTE CORP
PatSnap Eureka logo

PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.

X (Twitter)LinkedInYouTubeSubstack

© 2026 PatSnap. All rights reserved. 

Terms of Service

 | 

Privacy policy

 | 

Modern Slavery Act Transparency Statement