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Filter bank multi-carrier visible light communication system and method based on DC (Direct Current) bias

A technology of visible light communication and filter bank, which is applied in the field of visible light communication, can solve the problems of strict synchronization requirements, achieve the effects of simplifying strict synchronization requirements, improving spectral efficiency, and reducing implementation costs

Active Publication Date: 2016-03-30
SOUTHEAST UNIV
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Problems solved by technology

[0009] Aiming at the shortcomings of the existing optical OFDM system under the IM / DD communication mode that additional CP is required and strict requirements on synchronization, the present invention provides a filter bank multi-carrier visible light communication system and method based on DC bias, which can overcome the existing system Defects

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  • Filter bank multi-carrier visible light communication system and method based on DC (Direct Current) bias
  • Filter bank multi-carrier visible light communication system and method based on DC (Direct Current) bias
  • Filter bank multi-carrier visible light communication system and method based on DC (Direct Current) bias

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Embodiment Construction

[0078] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0079] An embodiment of the present invention provides a filter bank multi-carrier visible light communication system based on DC bias, which is used to overcome the inherent defects of the existing OFDM multi-carrier system. The system includes a sending end and a receiving end;

[0080] The sender (please refer to figure 1 )include:

[0081] -Interface and cache module, used to receive and cache the information bit stream to be transmitted from external applications;...

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Abstract

The invention discloses a filter bank multi-carrier visible light communication system and method based on DC (Direct Current) bias. The system comprises a sending end and a receiving end; cores of the sending end and the receiving end respectively are a comprehensive filter bank processing module and an analysis filter bank processing module; by sub-band synthesis filters using actual value coefficients, the requirement that a sent signal is an actual value is met; and by using the DC bias, the requirement that the sent signal is a positive value is further met, so that a filter bank multi-carrier technology is successfully applied to the visible light communication. Compared with an existing OFDM (Orthogonal Frequency Division Multiplexing) multi-carrier based visible light communication system, the system provided by the invention has two obvious advantages that on one hand, a cyclic prefix does not need to be attached to a sending data block, so that sending power is saved and spectrum utilization efficiency is improved; and on the other hand, the provided system can well support an asynchronous transmission mode, so that flexibility of system design is improved, the requirement for synchronization of the sending and receiving ends of the system is reduced and the filter bank multi-carrier visible light communication system is beneficial for reducing system implementation cost.

Description

technical field [0001] The invention belongs to the field of visible light communication, and in particular relates to a filter bank multi-carrier visible light communication system and method based on DC bias. Background technique [0002] At present, as one of the key technologies of the fifth-generation cellular mobile communication (5G), visible light communication (VLC, Visible Light Communication) is becoming a research hotspot in the field of mobile communication. Compared with the existing radio frequency band communication system, visible light communication has many advantages such as free from spectrum authorization, high potential capacity, good electromagnetic compatibility, security and confidentiality, harmless to human body and providing lighting at the same time. [0003] Visible light communication can be divided into coherent (Coherent) visible light communication and non-coherent (Non-Coherent) visible light communication according to the coherence of the...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L25/06H04B10/116
CPCH04B10/116H04L25/061H04L27/264
Inventor 党建张在琛吴亮
Owner SOUTHEAST UNIV
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