Experimental Comparison of Modulation Techniques for LED-based Underwater Optical Wireless Communications

被引：1
|
作者：
Yu, Minqing [1 ]
Geldard, Callum T. [1 ]
Popoola, Wasiu O. [1 ]
机构：
[1] Univ Edinburgh, Sch Engn, Inst Digital Commun, Edinburgh EH9 3JL, Midlothian, Scotland
来源：
2023 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE, WCNC | 2023年
关键词：
Underwater optical wireless communications; turbidity; carrierless amplitude and phase; phase amplitude modulation; orthogonal frequency division multiplexing; bit power loading;
D O I：
10.1109/WCNC55385.2023.10118924
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents an experimental comparison of pulse amplitude modulation (PAM), carrierless amplitude and phase (CAP), and quadrature amplitude modulation-orthogonal frequency division multiplexing (QAM-OFDM) in a turbid underwater optical wireless communications (UOWC) channel. It is shown that the transmission rates of PAM and CAP are maintained at around 180 Mbps even as turbidity increases. However, the highest transmission rate of 472 Mbps is achieved using 16-QAM-OFDM in tap water. Finally, bit power loading (BPL) is applied to further improve the performance of QAMOFDM, yielding an increased maximum transmission rate of 557 Mbps in tap water.
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页数：6
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