A Method for Optimizing the Structural Parameters of an Optical Receiving Antenna for Visible Light Communication

Abstract

The invention belongs to the technical field of optical antennas, in particular to a method for optimizing structural parameters of an optical receiving antenna for visible light communication. The method of the present invention includes three basic steps: Taguchi orthogonal test, including determining the optimization target, determining the control factor and level, setting the orthogonal matrix and completing the experiment and performance evaluation; constructing the fuzzy reasoning model, including calculating the S / N ratio, performance evaluation Normalization, establishing fuzzers, fuzzy inference engines, and defuzzifiers to obtain multiple quality characteristic indexes; variance analysis, including calculating the total variance and average variance of the test, calculating the contribution of different control factors, and comparing the contribution of different control factors and MPCI values, verification of optical and channel performance, and determination of optimal parameter combinations for optical structures. The invention can effectively solve the multi-quality characteristic trade-off problem existing in selecting the best robust parameter combination of the optical structure, greatly improves the efficiency of structural parameter optimization, and can greatly improve the performance of the optical system.

Description

technical field [0001] The invention belongs to the technical field of optical antennas, and in particular relates to a method for optimizing structural parameters of an optical system. Background technique [0002] Compared with traditional lighting methods, light-emitting diodes (LEDs) have the advantages of low power consumption, high brightness and long life, and have been widely used in various fields such as information display, visual transmission, and lighting. The rapid improvement in the performance of white LEDs has led to the emergence of a new wireless communication technology, that is, visible light communication technology. Compared with traditional radio frequency communication and other optical wireless communication methods, visible light communication is not limited by bandwidth, is not subject to electromagnetic interference from electronic equipment, has high security and confidentiality, and LED lighting communication equipment is easy to install, so it...

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Problems solved by technology

In order to improve the receiving power and signal-to-noise ratio of the receiving end of the visible light communication system, and ensure a higher gain and a larger field of view, the industry at home and abroad has proposed various design ideas for optical antennas. The main direction of the research work is to design new antenna structures. However, there are almost no optimization methods applicable to the optical receiving antenna structure of visible light communication, and the proposal and research of optimization methods can also promote the improvement of system performance.

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