Multi-antenna balanced receiving method for high-speed video communication

A technology of multi-antenna equalization and receiving methods, applied in transmitter/receiver shaping network, radio transmission system, transmission system, etc., can solve problems such as inter-symbol interference and channel interference

Inactive Publication Date: 2022-02-01
元智科技集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, frequency selective fading caused by multipath effects and time selective fading caused by Doppler frequency shift will bring problems such as channel interference and intersymbol interference.

Method used

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  • Multi-antenna balanced receiving method for high-speed video communication
  • Multi-antenna balanced receiving method for high-speed video communication
  • Multi-antenna balanced receiving method for high-speed video communication

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Embodiment Construction

[0055] The present invention is described in further detail now in conjunction with accompanying drawing.

[0056] It should be noted that terms such as "upper", "lower", "left", "right", "front", and "rear" quoted in the invention are only for clarity of description, not for Limiting the practicable scope of the present invention, and the change or adjustment of the relative relationship shall also be regarded as the practicable scope of the present invention without substantive changes in the technical content.

[0057] Symbols represent: in this embodiment , , and Represented as transpose, conjugate transpose, inversion and conjugate operation, bold uppercase letters indicate matrix, bold lowercase letters indicate vector, and * indicate convolution operation.

[0058] The multi-antenna balanced receiving method in this embodiment includes the following steps:

[0059] S1, get the i-th output of the equalizer :

[0060]

[0061] In the formula, , Respect...

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Abstract

The invention discloses a multi-antenna balanced receiving method for high-speed video communication, and the method comprises the following steps: defining variables, and constructing a self-adaptive filter; taking the column vector as the input of a transverse filter and a transverse filter tap coefficient, and simplifying the nonlinear structure of the equalizer into a linear filtering structure; obtaining an optimal solution of the equalizer according to a minimum mean square error rule; and iteratively solving through a conjugate gradient algorithm to complete the design of the adaptive equalizer, so that the equalized overall channel is a unit matrix or a switching matrix. According to the method, the adaptive equalization problem is modeled into the adaptive filtering problem, iterative solution is carried out through the CG algorithm, and the equalizer adopting MMSE equalization does not need to identify a channel and can adapt to the change of the channel.

Description

technical field [0001] The invention relates to the technical field of communication signal processing, in particular to a multi-antenna balanced receiving method for high-speed video communication. Background technique [0002] With the development of modern communication technology and business, people's demand for communication has changed from the initial single voice to the communication demand for video and audio. The video communication service integrating voice, data and video has become a hot spot in the development of the communication field. And as people rely more and more on video communication services, their service quality requirements are also getting higher and higher. [0003] The video protocol in the current video communication is mainly based on SIP and H.323 protocol. H.323 stipulates the operation mode required for different audio, video and data terminals to work together. The dominant standard in technology. [0004] Voice codecs mainly use G.711 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04B7/0413H04B17/391
CPCH04L25/03254H04L25/03891H04L25/03968H04B7/0413H04B17/3912
Inventor 王少华
Owner 元智科技集团有限公司
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