Single carrier frequency-domain equalization method based on sub-block analysis

A technology of single-carrier frequency domain and equalization method, which is applied in the direction of baseband system components, shaping network in transmitter/receiver, etc., can solve the problems of increasing hardware complexity and implementation complexity, etc., to simplify the equalization implementation process and eliminate Inter-block interference, performance-enhancing effects

Active Publication Date: 2015-12-02
XIDIAN UNIV
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of eliminating inter-block interference not only greatly incr

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
  • Single carrier frequency-domain equalization method based on sub-block analysis
  • Single carrier frequency-domain equalization method based on sub-block analysis
  • Single carrier frequency-domain equalization method based on sub-block analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0036] figure 1 The working principle of the single-carrier frequency-domain equalized SC-FDE system shown is: the data part is coded, interleaved and modulated at the sending end first, according to figure 2 The frame structure shown is inserted with the unique word UW, where DATA is the data part, which passes through the shaping filtering process, and then passes through the channel, and first undergoes matching filtering at the receiving end, and performs channel estimation according to the received signal to obtain the channel matrix, and performs fast Fourier on the received signal Fourier transform FFT, perform equalization processing, obtain frequency domain equalized data, pass frequency domain equalized data through fast Fourier inverse transform IFFT, obtain time domain equalized data, and then undergo deinterleaving, decoding and other proce...

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 discloses a single carrier frequency-domain equalization method based on sub-block analysis mainly for solving the problems in the prior art that the hardware complexity is high, and the realization process is complicated. The single carrier frequency-domain equalization method based on sub-block analysis comprises the realization steps of 1, intercepting a fast Fourier transform (FFT) block of which the length is N from a reception terminal, and dividing the FFT block into a plurality of sub-blocks; 2, carrying out the N-point FFT on the intermediate channel response in the time quantum of the i-th sub-block; 3, calculating the coefficients of an equalizer to obtain the frequency-domain equalization data of the whole FFT block; 4, obtaining the time domain equalization data of the whole FFT block by the frequency-domain equalization data; 5, obtaining the time domain equalization data of the i-th sub-block; 6, splicing the time domain equalization data of the sub-blocks to obtain a final equalization result. According to the present invention, by carrying out the frequency domain equalization in the FFT block, the interblock interference does not need to be eliminated, thereby reducing the hardware complexity, and simplifying the equalization realization process. Moreover, the single carrier frequency-domain equalization method based on sub-block analysis has a better bit error rate performance than the prior art, and is suitable for the worse channel environments.

Description

technical field [0001] The invention belongs to the technical field of short-wave communication, and particularly relates to a single-carrier frequency-domain equalization method, which is used for eliminating intersymbol interference introduced by a channel and improving the performance of a receiver. Background technique [0002] Shortwave communication, also known as high frequency HF radio communication, relies on electromagnetic waves of 1.5MHz to 30MHz for communication. Because short-wave communication can realize long-distance communication without relay, and has the advantages of simple equipment, flexible maneuverability, strong invulnerability and fast network reconstruction, it is widely used in government, diplomacy, military, business, meteorological and other departments, especially military departments. . [0003] Shortwave communication is mainly carried out in two ways: ground wave transmission and sky wave transmission. Ground wave transmission increases...

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): H04L25/03H04L25/02
Inventor 马卓杜栓义张婷婷孙霖楠
Owner XIDIAN 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