【摘要】 阐述了背景可见光在噪声受限与干扰受限的白光LED通信系统中的影响。利用带通滤波器和光学设计以及噪声匹配等方法提高了作为噪声受限系统的接收机性能;采取带阻滤波器、副载波调制、增设滤波电容等措施,很好地抑制了干扰源对干扰受限系统的影响;提出了基于噪声与干扰双受限的白光LED通信接收机设计方案,根据该方案设计的白光LED通信系统已投入使用。更多还原

【Abstract】 The influence on white light LED communication system whose performance is limited by noise and interference produced by background visible light is showed in this paper.The reception performance in noise-limited system is improved by band-pass filter,optical design and noise-matching and the effect on interference-limited system is declined with band elimination filter,subcarrier modulation and filtering capacitance.Therefore,a receiver design of white light LED communication based on noise-limited and interference-limited is proposed,the white light LED communication according which is put into use.更多还原