多输入多输出
空间复用
计算机科学
多路复用
解调
传输(电信)
电子工程
调制(音乐)
可见光通信
可靠性(半导体)
电信
物理
光学
工程类
频道(广播)
功率(物理)
发光二极管
量子力学
声学
作者
Shaoqi Chen,Xuefen Chi
出处
期刊:Optics Letters
[The Optical Society]
日期:2024-04-11
卷期号:49 (10): 2657-2657
摘要
In typical multiple-input multiple-output (MIMO) optical camera communication (OCC) systems, the spatial correlation of MIMO channels is large. Optical signals between light sources can easily interfere with each other, negatively impacting the overall transmission performance. In this work, we propose a time-multiplexing integral modulation scheme for a non-line-of-sight MIMO OCC system, where each LED transmits different signals to improve both the data rate and security of the system. A genetic algorithm (GA)-based adaptive multi-threshold scheme is designed to demodulate the blurred fringes in multi-level pulse amplitude modulation. The experimental results show that at a distance of 2.5 m, a data rate of 16.4 kb/s can reach with the BER performance of 3.01 × 10
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