基于光OFDM的室内可见光多媒体广播系统

摘要

区间干扰是室内多媒体广播传输最主要的影响因素之一.本文中提出了一种基于光OFDM的室内可见光多媒体广播系统.该系统一方面能够有效避免区间干扰,提高频谱效率,另一方面能够有效提高整个系统的功率效率,并且保证室内照明效果.本文针对所设计的可见光多媒体广播系统,研究了相关参数对系统性能的影响,仿真并分析了系统光照效果、信噪比、频谱效率以及功率效率等性能指标,并与其它系统进行比较,验证了系统在干扰抑制和功率效率方面的优势.%One of the most important adverse effects in indoor multimedia broadcasting systems is co-channel interference (CCI).In this paper,an indoor visible light multimedia broadcasting system which bases on optical orthogonal frequency division multiplexing (O-OFDM) is proposed,which can effectively mitigate the interference and increase the average spectral efficiency.The proposed system also can greatly improve the overall system power efficiency while ensuring the indoor lighting quality.The performance of the system is analyzed.The signal-to-noise-ratio (SNR),spectral efficiency,power efficiency and lighting quality of the system are studied based on the considerations of the important parameters.The system is proven to be better than other systems in many aspects.