自适应空间调制VLC系统研究

摘要

By introducing adaptive modulation in the conventional SM-OFDM system,and for the channel characteristics of visible light communication system,an adaptive spatial modulation scheme based on SNR is presented.It establishes an experimental system of visible light communication,and studies the performance of ASM-OFDM scheme in VLC experimental system.The experimental results show that the proposed ASM-OFDM scheme has higher spectrum efficiency than the traditional SM-OFDM technology.%通过在传统的SM-0FDM系统中引入自适应调制技术,针对可见光通信(Visible Light Communication,VLC)系统信道的特性提出了一种基于信噪比的自适应空间调制方案(ASM-0FDM).建立了可见可见光通信实验系统,研究ASM-0FDM方案在VLC实验系统中的性能.实验结果证明了所提出的ASM-0FDM方案相比于传统SM-0FDM技术,其频谱利用率有很大的提高.