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| Carrier-less Position/Phase Modulation for Visible Light Communications |
| WU Nan WANG Xudong YAO Kaili GAI Xindong HE Rongxi |
| (Information Science Technology College, Dalian Maritime University, Dalian 116026, China) |
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Abstract In order to guarantee that Visible Light Communication (VLC) can provide both high-speed and low energy consumption data transmission services. A modulation named by Carrier-less Position/Phase (CPP) based on Pulse Position Modulation (PPM) is proposed. By utilizing the orthogonal filters, the transmission rate of the PPM is improved. According to that employing CPP modulation in VLC makes power efficiency significantly reduced, a novel variable bias is presented as an effort to reduce the power consumption effectively. Finally, the simulation results illustrate that applying the proposed variable bias to CPP scheme, compared to DC bias, the new scheme can save 2 dB of SNR to obtain the same BER performance under the bandwidth constrained conditions. After further considering slots’ correlation, the variable bias can further improve the BER performance by 1.5 dB.
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Received: 11 April 2016
Published: 21 October 2016
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| Fund: The National Natural Science Foundation of China (61371091) |
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Corresponding Authors:
WANG Xudong
E-mail: wxd@dlmu.edu.cn
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