Experimental performance evaluation of non-line-of-sight ultraviolet communication systems

2007 ◽  
Author(s):  
Zhengyuan Xu ◽  
Gang Chen ◽  
Feras Abou-Galala ◽  
Michael Leonardi
Keyword(s):  
Performance Evaluation ◽  
Communication Systems ◽  
Line Of Sight ◽  
Experimental Performance ◽  
Ultraviolet Communication ◽  
Non Line Of Sight

Effects of atmosphere visibility on performances of non-line-of-sight ultraviolet communication systems

Optik ◽  
2008 ◽  
Vol 119 (13) ◽  
pp. 612-617 ◽  
Author(s):  
Tao Feng ◽  
Fei Xiong ◽  
Gang Chen ◽  
Zujie Fang
Keyword(s):  
Communication Systems ◽  
Line Of Sight ◽  
Ultraviolet Communication ◽  
Non Line Of Sight

scholarly journals Experimental Performance Evaluation of Multihop IEEE 802.15.4/4g/4e Smart Utility Networks in Outdoor Environment

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Chin-Sean Sum ◽  
Ming-Tuo Zhou ◽  
Fumihide Kojima ◽  
Hiroshi Harada
Keyword(s):  
Performance Evaluation ◽  
Ieee 802.15.4 ◽  
Outdoor Environment ◽  
Line Of Sight ◽  
The Sun ◽  
Experimental Performance ◽  
Low Energy Consumption ◽  
Extended Range ◽  
And Control ◽  
Non Line Of Sight

This paper presents the experimental performance evaluation results of the IEEE 802.15.4/4g/4e Smart Utility Networks (SUN) in applications suited for outdoor environment. SUN is an advanced wireless communications network designed for reliable, low data rate, and low energy consumption networks for command-and-control applications like utility service, sensor network, and so on. IEEE 802.15.4g/4e is the international standard for SUN supported by multiple utility providers and product vendors. In this paper, a comprehensive field test was conducted by employing the implementation we have developed to evaluate the performance of the SUN devices based on IEEE 802.15.4/4g/4e standard. The output power of the implementation is 250 mW for extended range, reducible to 20 mW for short-range scalability and battery preservation. Results showed that in an outdoor line-of-sight environment, the achievable one-hop range of a 50 kbps SUN device was 450 m. Next, in a non-line-of-sight environment involving typical residential concrete building, the communications could be established penetrating obstructions to reach above the 11th storey, reaching the performance degradation limits at the 20th storey. Next, the network of the SUN system was proven to be capable of supporting a typical multihop tree network in a dense populated building, meeting the required performance by the standard.

Study on multiple receiver systems in non-line-of-sight ultraviolet communication systems

2014 ◽  
Vol 21 (2) ◽  
pp. 104-108 ◽  
Author(s):  
Chen-xi LI ◽  
Ying-ting LIU ◽  
Kai ZHANG ◽  
Jie MAO ◽  
Yong-li ZHAO
Keyword(s):  
Communication Systems ◽  
Line Of Sight ◽  
Multiple Receiver ◽  
Ultraviolet Communication ◽  
Non Line Of Sight

Non-line-of-sight ultraviolet communication performance in atmospheric turbulence

2013 ◽  
Vol 10 (11) ◽  
pp. 52-57 ◽  
Author(s):  
Zuo Yong ◽  
Wu Jian ◽  
Xiao Houfei ◽  
Lin Jintong
Keyword(s):  
Atmospheric Turbulence ◽  
Line Of Sight ◽  
Communication Performance ◽  
Ultraviolet Communication ◽  
Non Line Of Sight

An area coverage algorithm for non-line-of-sight ultraviolet communication network

2016 ◽  
Vol 32 (2) ◽  
pp. 269-280 ◽  
Author(s):  
Zhao Taifei ◽  
Gao Yingying ◽  
Zhang Ying
Keyword(s):  
Communication Network ◽  
Area Coverage ◽  
Line Of Sight ◽  
Ultraviolet Communication ◽  
Non Line Of Sight

scholarly journals Non-Line-of-Sight Error Mitigation in Wireless Communication Systems

2011 ◽  
Vol 1 ◽  
pp. 173-177
Author(s):  
Szu Lin Su ◽  
Yi Wen Su ◽  
Ho Nien Shou ◽  
Chien Sheng Chen
Keyword(s):  
Communication Systems ◽  
Hybrid Methods ◽  
Mobile Station ◽  
Base Stations ◽  
Superior Performance ◽  
Line Of Sight ◽  
Time Of Arrival ◽  
Angle Of Arrival ◽  
Error Statistics ◽  
Non Line Of Sight

When there is non-line-of-sight (NLOS) path between the mobile station (MS) and base stations (BSs), it is possible to integrate many kinds of measurements to achieve more accurate measurements of the MS location. This paper proposed hybrid methods that utilize time of arrival (TOA) at five BSs and angle of arrival (AOA) information at the serving BS to determine the MS location in NLOS environments. The methods mitigate the NLOS effect simply by the weighted sum of the intersections between five TOA circles and the AOA line without requiring priori knowledge of NLOS error statistics. Simulation results show that the proposed methods always give superior performance than Taylor series algorithm (TSA) and the hybrid lines of position algorithm (HLOP).

Differential evolution particle filtering channel estimation for non-line-of-sight wireless ultraviolet communication

2019 ◽  
Vol 451 ◽  
pp. 80-85
Author(s):  
Taifei Zhao ◽  
Longfei Liu ◽  
Le Liu ◽  
Gang Zhang
Keyword(s):  
Channel Estimation ◽  
Differential Evolution ◽  
Particle Filtering ◽  
Line Of Sight ◽  
Ultraviolet Communication ◽  
Non Line Of Sight
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