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A single-carrier broadband transmission method and system without channel equalization

A channel equalization, single-carrier technology, applied in the transmission system, digital transmission system, radio transmission system, etc., can solve the problem of increasing the complexity of signal processing at the receiving end, and achieve the goal of reducing implementation complexity, low complexity, and reducing overhead Effect

Active Publication Date: 2022-02-22
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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  • A single-carrier broadband transmission method and system without channel equalization
  • A single-carrier broadband transmission method and system without channel equalization
  • A single-carrier broadband transmission method and system without channel equalization

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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 Explanation.

[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 ...

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Abstract

The invention discloses a channel equalization-free single-carrier broadband transmission method, which comprises the steps of: obtaining the number of resolvable paths in the time domain, and the time delay and channel gain vectors corresponding to each path according to the impulse response of the communication channel; The symbol string to be transmitted introduces a corresponding delay and performs delay compensation so that the signal reaches the receiving end at the same time after passing through the multi-path channel, thereby avoiding inter-symbol interference in broadband transmission; the transmitting end uses multiple antennas to perform path-by-path beam Shaped design. Through zero-forcing path-by-path beamforming and delay-aligned modulation, the frequency-selective multipath channel can be transformed into a frequency-flat channel. The invention also proposes a channel equalization-free single-carrier broadband transmission system. The invention solves the problem of intersymbol interference in broadband communication by means of time delay alignment modulation and path-by-path beamforming without channel equalization or multi-carrier transmission, and realizes low-complexity single-carrier broadband communication.

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

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/0408H04B7/22H04L25/03
CPCH04B7/0617H04B7/0408H04B7/22H04L25/03891
Inventor 曾勇陆海全
Owner SOUTHEAST UNIV