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A power-efficient zero-breaking precoding scheme based on biased channel information

A precoding scheme and channel information technology, applied in the field of power-efficient zero-breaking precoding scheme, can solve the problem that the information does not consider the influence of interference

Active Publication Date: 2020-06-30
DONGGUAN XINDA INST OF INTEGRATED INNOVATION +1
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  • Application Information

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Problems solved by technology

[0004] Although the VLC precoding technology has been extensively studied, the information used in the VLC precoding of the target does not consider the influence of interference

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  • A power-efficient zero-breaking precoding scheme based on biased channel information
  • A power-efficient zero-breaking precoding scheme based on biased channel information
  • A power-efficient zero-breaking precoding scheme based on biased channel information

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Embodiment Construction

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0066] see Figure 1-Figure 2 , the present invention provides a technical solution:

[0067] A power-efficient zero-breaking precoding scheme for multiple users in indoor visible light communication based on biased channel information. This scheme takes into account the influence of noise introduced during channel estimation. While ensuring the signal-to-interference-noise ratio of multiple users, the design meets the minimum illumination level Precoding des...

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Abstract

The invention discloses power efficient zero-breaking pre-coding of an indoor visible light communication multi-user based on deviation channel information. The scheme is a pre-coding algorithm for controlling the interference between users provided for an indoor visible light communication multi-user system; the pre-coding algorithm is designed with the minimum lighting power as an optimization target, and with the current dynamic range of an LED as a limiting condition; in the pre-coding design, a noise error and a delay error are considered, and meanwhile, a zero-breaking method is adoptedin the pre-coding design, and the interference between users is completely eliminated. The advantages of the invention are as follows: the proposed pre-coding algorithm considers the influences of noise and delay during channel estimation; and the signal-to-interference and noise ratio of a plurality of users is guaranteed and a pre-coding design scheme that meets the minimum illumination level isdesigned, so that the effectiveness of the pre-coding design is improved.

Description

technical field [0001] The invention relates to the technical field of visible light communication, in particular to a power-efficient zero-breaking precoding scheme for multiple users of indoor visible light communication based on deviation channel information. Background technique [0002] Visible light communication (VLC) is a wireless optical communication technology that combines lighting with data communication. Currently, one of the main challenges of VLC is its low modulation bandwidth, usually only a few MHz. However, the illuminance stipulated by relevant international standards makes the received signal have a higher signal-to-noise ratio (SNR). And for a typical indoor environment, its lighting is usually composed of multiple LEDs, so the use of multiple-input multiple-output (MIMO) technology to achieve high-speed visible light communication has become the research focus of scholars at home and abroad. At present, scholars at home and abroad have done some res...

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Application Information

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IPC IPC(8): H04B10/116H04L25/03
CPCH04B10/116H04L25/03343H04L25/03898
Inventor 田忠骏孙正国朱义君汪涛郑晓东刘洛琨梁进山高熙
Owner DONGGUAN XINDA INST OF INTEGRATED INNOVATION