Method for realizing channel equalization by using frequency-domain oversampling

A channel equalization and oversampling technology, which is applied to multi-frequency code systems, shaping networks in transmitters/receivers, baseband system components, etc., can solve problems such as not fully considering the system BER performance, and not proposing an implementation method. Achieve the effects of improving BER performance, facilitating application, and reducing complexity

Active Publication Date: 2016-10-05
泛行科技(深圳)中心(有限合伙)
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The diagonal minimum mean square error equalizer in the above literature only involves a fixed oversampling rate, but does not fully consider the use of increasing the oversampling rate to improve the BER performance of the system, and does not propose a specific implementation method.

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 for realizing channel equalization by using frequency-domain oversampling
  • Method for realizing channel equalization by using frequency-domain oversampling
  • Method for realizing channel equalization by using frequency-domain oversampling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The following is one of many possible embodiments of the present invention, intended to provide a basic understanding of the present invention, but not intended to identify key or decisive elements of the present invention or limit the scope of protection. It is easy to understand that, according to the technical solution of the present invention, those skilled in the art may propose other alternative implementation manners without changing the essence and spirit of the present invention. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0038] In order to make the object of the present invention, technical scheme and advantage clearer, below in conjunction with appendix Figure 4 and attached Figure 5 pair Embodiments of t...

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, which belongs to the technical field of digital communication, provides a method for realizing channel equalization by using frequency-domain oversampling in an orthogonal frequency division multiplexing (OFDM) receiver. According to the method, oversampling is carried out on a received OFDM signal in a frequency domain; oversampling is carried out on estimated channel information in the frequency domain; equalization is carried out on a virtual subcarrier signal obtained by oversampling by using an oversampling channel; and the virtual subcarrier signal after equalization is converted into a time-domain signal and then is converted into a practical sub carrier data signal in a non-oversampling frequency domain. According to the method, an output signal can be demodulated and decoded and thus data transmitted by an OFDM system can be restored. An error rate performance of an OFDM system receiver can be improved by enhancing an oversampling rate.

Description

technical field [0001] The invention relates to the technical field of digital communication, in particular to a method for implementing channel equalization by using frequency domain oversampling for an Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) system. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) systems have been widely used in various wired and wireless communication fields. However, the system will encounter various fading and noise interference during the transmission process. For example, in order to prevent multipath interference, a guard interval (GI) is usually added between OFDM data blocks. If the length of the guard interval is not less than the maximum multipath delay of the channel, the data blocks between GIs will not cause any interference. According to different GI filling methods, OFDM systems can be divided into: cyclic prefix (CP) type OFDM, zero padding (ZP) type OFD...

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 Applications(China)
IPC IPC(8): H04L25/03H04L27/26
Inventor 鄢炎新
Owner 泛行科技(深圳)中心(有限合伙)
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