Comparison of pulse position modulation and pulse width modulation for application in optical communications

Yangyu Fan; Roger J. Green

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Comparison of pulse position modulation and pulse width modulation for application in optical communications

机译：Comparison of pulse position modulation and pulse width modulation for application in optical communications

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摘要

Different modulation methods for optical wireless have differentpower and bandwidth efficiencies. Each approach has a direct bearing on the quality and effectiveness of wireless optical communications. As two prime examples, pulse position modulation (PPM) and pulse width modulation (PWM) are compared. The comparison includes the power and bandwidth efficiencies, the power spectrum distribution, and the ability to resist intersymbol interference. Compact system models of multilevel digital PPM (L-PPM), and multilevel digital PWM (L-PWM) are also introduced. The results show that L-PPM has advantages in power efficiency and an approximately uniform spectral distribution, whereas L-PWM has a greater ability to resist intersymbol interference.

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来源
《Optical Engineering》 |2007年第6期|065001-1-065001-7-0|共7页
作者
Yangyu Fan; Roger J. Green;
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作者单位

Northwestern Polytechnical University School of Electronics and Information Xi'an Shaanxi, 710072, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学仪器;
关键词
pulse position modulation; pulse width modulation; power efficiencies; bandwidth efficiencies; intersymbol interference;

Comparison of pulse position modulation and pulse width modulation for application in optical communications

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