Bit loading method in selecting frequency single carrier wave blocking transmission system

A technology of block transmission and bit loading, which is applied to baseband system components, shaping networks in transmitters/receivers, equalizers, etc., and can solve problems such as zero-forcing equalization

Inactive Publication Date: 2005-08-03
SHANDONG UNIV
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0035] 1. Zero-fo

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
  • Bit loading method in selecting frequency single carrier wave blocking transmission system
  • Bit loading method in selecting frequency single carrier wave blocking transmission system
  • Bit loading method in selecting frequency single carrier wave blocking transmission system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0079] Accompanying drawing has provided the system block diagram realizing the proposed method of the present invention, and each module effect is as follows:

[0080] Source module 1: Generates data to be transmitted.

[0081] Symbol mapping module 2: select different modulation schemes (QAM or MPSK) according to the modulation scheme information returned by the reverse channel 21, and map the data generated by the information source to the corresponding points of the constellation diagram.

[0082] M-point FFT module 3: Transform the M mapped signals of each frame into the frequency domain to obtain M-point frequency domain signals of the signal.

[0083] Signal spectrum transformation module 4: according to the subchannel label information sent back by the receiving end through the reverse channel 21, place the M point frequency domain signal output by module 3 on the spectrum points corresponding to the M available subchannels, and disable the corresponding spectrum of th...

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 provides a bit loading method in a frequency selection single carrier blocking transmission system including the following steps: 1, The receive end gets balanced noise power according to the selected available sub-channel numbers M and their amplitude gain to get balanced S/N ratio in terms of the received S/N ratio and the balance way, 2,the receive end determines the applied different linear modulation ways, the data describing different linear modulation ways are called information of modulation way and sent to the send end via a feed back channel, 3, which images symbols and sends signals, 4, the receive end demodulates the signals and judges them.

Description

(1) Technical field [0001] The invention relates to a broadband digital communication transmission method. The invention belongs to the technical field of broadband wireless communication. (2) Background technology [0002] Communication technology has developed rapidly in recent decades, especially since the 1990s, and has had a profound impact on people's daily life and the development of the national economy. The future communication technology is developing in the direction of broadband and high speed, so many broadband digital transmission technologies have received extensive attention, such as Orthogonal Frequency Division Multiplexing (hereinafter referred to as OFDM: Orthogonal Frequency Division Multiplexing) and frequency domain balanced -FDE: Single Carrier with Frequency Domain Equalization) are two broadband digital transmission technologies that are valued by people. They both belong to block transmission technology. At present, OFDM has received far more atte...

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): H04L25/03H04L27/01
Inventor 杜岩袁静李剑飞宫良
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap