基于超紫外通信OOK-NOMA系统的时间卷积特征融合网络的信号解调方法
Optics express
|January 29, 2025
概括
使用时间卷积特征融合网络 (TCFFN) 的新解调方法改善了非视线紫外线通信 (UVC). 与现有方法相比,这种TCFFN提高了数据速率和可靠性.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
- 机器学习 机器学习
背景情况:
- 非视线 (NLOS) 紫外线通信 (UVC) 系统因频道散射而面临符号间干扰 (ISI) 的挑战.
- 现有的解调方法,如静态值 (ST) 和最小平均平方误差 (MMSE),在NLOS UVC中难以实现高数据速率和可靠性.
研究的目的:
- 为NLOSUVC系统提出一种新的解调方法.
- 在ISI的存在下,提高UVC系统的适应性和性能.
- 在单用户和双用户的UVC开启关闭非正交多重访问 (OOK-NOMA) 场景中评估拟议的方法.
主要方法:
- 开发一个时间卷积特征融合网络 (TCFFN) 用于信号调节.
- 使用TCFFN提取时间和局部信号特征以对抗ISI.
- 在UVC OOK-NOMA系统中对TCFFN解调器与ST和MMSE方法的性能评估.
主要成果:
- 与ST和MMSE相比,TCFFN解调器在支持NLOSUVC系统的更高数据速率方面表现出卓越的性能.
- 在双重用户场景中,TCFFN实现了可靠的通信速度为8 Mbps (共平面和第一个非共平面) 和4 Mbps (第二个非共平面).
- ST和MMSE方法未能达到比特错误率 (BER) 的前期错误纠正 (FEC) 值.
结论:
- 拟议的TCFFN解调方法显著提高了NLOS UVC系统的性能.
- 在具有挑战性的UVC环境中,TCFFN提供了一个强大的解决方案,以实现高速率和可靠的通信.
- 该方法的性能优于传统技术,为更高效的UVC应用铺平了道路.
相关概念视频
Design Example
316
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
316
UV–Vis Spectrometers
1.3K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
1.3K
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
2.5K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material, molecules absorb light depending on the energy required for...
2.5K


