利用最大长度序列的LED声音通信系统

Journal of Light & Visual Environment Pub Date : 2012-08-01 DOI:10.2150/JLVE.36.54

A. Minato, Jiayu Liu, Fuhui Guo, Masanori Itaba, S. Ozawa

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引用次数: 0

摘要

我们正在发展完善的通讯系统。调制后的LED光被转换成电磁波，通过调幅收音机接收。我们以前的调制技术在调幅频率区域有小的峰值。当使用不同调幅频率的多个声源时，小峰值会造成麻烦。我们提出了新的无小峰调制技术。比较了两种调制技术的功率谱和音质。

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Sound Communication System of LED Using Maximum Length Sequence

We are developing sound communication system. Modulated LED light is transformed to electromagnetic wave and received by AM radio. Our previous modulation technique has small peaks at AM frequency region. The small peaks cause trouble when multiple sound sources are used with different AM frequencies. We propose new modulation techniques having no small peaks. Power spectrum and sound quality are compared between our modulation techniques.

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Journal of Light & Visual Environment

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