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

Single carrier broadband transmission method and system without channel equalization

A channel equalization, single-carrier technology, applied in transmission systems, digital transmission systems, radio transmission systems, etc., can solve problems such as increasing the complexity of signal processing at the receiving end, and achieve a solution that reduces implementation complexity, complexity, and overhead. Effect

Active Publication Date: 2021-12-31
SOUTHEAST UNIV
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology requires DFT (discrete Fourier transform, discrete Fourier transform) and IDFT (inverse discrete Fourier transform, inverse discrete Fourier transform) at the receiving end, which increases the complexity of signal processing at the receiving end

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 broadband transmission method and system without channel equalization
  • Single carrier broadband transmission method and system without channel equalization
  • Single carrier broadband transmission method and system without channel equalization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031]Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings.

[0032] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein explain.

[0033] The embodiment of the present invention provides a new channel equalization-free single-carrier broadband communication transmission method, that is, delay alignment modulation, and the transmitting end introduces a corresponding time delay to the symbol string to be transmitted acco...

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 discloses a single carrier broadband transmission method without channel equalization. The method comprises the following steps: the number of time domain distinguishable paths and time delays and channel gain vectors corresponding to the paths are obtained according to the pulse response of a communication channel; a transmitting end introduces corresponding time delay to a symbol string needing to be transmitted to perform time delay compensation, so that signals simultaneously reach a receiving end after passing through a multi-path channel, and inter-symbol interference in broadband transmission is avoided; and a transmitting end utilizes multiple antennas to carry out path-by-path beam forming design. Through zero-forcing path-by-path beam forming and time delay alignment modulation, a frequency selective multipath channel can be converted into a frequency flatness channel. The invention further provides a single-carrier broadband transmission system free of channel equalization. Through time delay alignment modulation and path-by-path beam forming, under the condition that channel equalization or multi-carrier transmission is not needed, the problem of inter-symbol interference of broadband communication is solved, and low-complexity single-carrier broadband communication is achieved.

Description

technical field [0001] The invention relates to the field of wireless communication standardization process, in particular to a channel equalization-free single-carrier broadband communication transmission method, that is, delay alignment modulation. Background technique [0002] OFDM (orthogonal frequency-division multiplexing, Orthogonal Frequency Division Multiplexing) has gradually developed into a mainstream transmission technology for broadband communications since it was proposed in the 1960s, and is widely used in the fourth generation (4G) and fifth generation Generation (5G) cellular mobile communication and WLAN (wireless local area network, wireless local area network). OFDM is a digital multi-carrier technique that converts a high-speed serial data stream into multiple low-speed parallel data streams. These data streams are transmitted on multiple orthogonal subcarriers with overlapping spectrums, where the channel response on each subcarrier can be regarded as...

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): H04B7/06H04B7/0408H04B7/22H04L25/03
CPCH04B7/0617H04B7/0408H04B7/22H04L25/03891
Inventor 曾勇陆海全
Owner SOUTHEAST UNIV