Performance Evaluation of Joint Pulse Width Modulation and Pulse Position Modulation Visible Light Communications
碩士 === 國立雲林科技大學 === 電子工程系 === 105 === This research presents the simulation results of pulse width modulation and pulse position modulation (Joint PWM/PPM). During the PPM data transmissions, the PWM duty cycle changed from 40% to 80%, in the process of data transmission simultaneously to achiev...
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ndltd-TW-105YUNT03930162019-05-15T23:31:51Z http://ndltd.ncl.edu.tw/handle/586pts Performance Evaluation of Joint Pulse Width Modulation and Pulse Position Modulation Visible Light Communications 基於聯合脈波寬度調變與脈波位置調變之可視光通訊傳輸與系統效能評估 WU, YU-HUNG 吳宇弘 碩士 國立雲林科技大學 電子工程系 105 This research presents the simulation results of pulse width modulation and pulse position modulation (Joint PWM/PPM). During the PPM data transmissions, the PWM duty cycle changed from 40% to 80%, in the process of data transmission simultaneously to achieve dimming control of visible light communication (VLC). LED channel effect of VLC, resulting in the phenomenon of inter-symbol interference (ISI), so this thesis uses the post-equalization circuit to improve the LED bandwidth limit, and display PPM signal in different guard time (slot) bit error rate results. In the 5×5×3m indoor environment system, we get the signal-to-noise ratio (SNR) into the Joint PWM/PPM simulation to obtain the bit error rate distributions. It is known from the simulation results, that the system is added to the guard time of PPM signal, and the result of the bit error rate after the equalization is the best and the distribution is the most uniform. LAIN, JENN-KAIE 連振凱 2017 學位論文 ; thesis 72 zh-TW |
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碩士 === 國立雲林科技大學 === 電子工程系 === 105 === This research presents the simulation results of pulse width modulation and pulse position modulation (Joint PWM/PPM). During the PPM data transmissions, the PWM duty cycle changed from 40% to 80%, in the process of data transmission simultaneously to achieve dimming control of visible light communication (VLC).
LED channel effect of VLC, resulting in the phenomenon of inter-symbol interference (ISI), so this thesis uses the post-equalization circuit to improve the LED bandwidth limit, and display PPM signal in different guard time (slot) bit error rate results. In the 5×5×3m indoor environment system, we get the signal-to-noise ratio (SNR) into the Joint PWM/PPM simulation to obtain the bit error rate distributions. It is known from the simulation results, that the system is added to the guard time of PPM signal, and the result of the bit error rate after the equalization is the best and the distribution is the most uniform.
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author2 |
LAIN, JENN-KAIE |
author_facet |
LAIN, JENN-KAIE WU, YU-HUNG 吳宇弘 |
author |
WU, YU-HUNG 吳宇弘 |
spellingShingle |
WU, YU-HUNG 吳宇弘 Performance Evaluation of Joint Pulse Width Modulation and Pulse Position Modulation Visible Light Communications |
author_sort |
WU, YU-HUNG |
title |
Performance Evaluation of Joint Pulse Width Modulation and Pulse Position Modulation Visible Light Communications |
title_short |
Performance Evaluation of Joint Pulse Width Modulation and Pulse Position Modulation Visible Light Communications |
title_full |
Performance Evaluation of Joint Pulse Width Modulation and Pulse Position Modulation Visible Light Communications |
title_fullStr |
Performance Evaluation of Joint Pulse Width Modulation and Pulse Position Modulation Visible Light Communications |
title_full_unstemmed |
Performance Evaluation of Joint Pulse Width Modulation and Pulse Position Modulation Visible Light Communications |
title_sort |
performance evaluation of joint pulse width modulation and pulse position modulation visible light communications |
publishDate |
2017 |
url |
http://ndltd.ncl.edu.tw/handle/586pts |
work_keys_str_mv |
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