Experimental evaluation of LED-based solar blind NLOS communication links.
Gang Chen1, Feras Abou-Galala, Zhengyuan Xu
1Department of Electrical Engineering, University of California, Riverside, California 92521, USA.
Optics Express
|September 17, 2008
Summary
This study shows ultraviolet communication link losses and photon counting detector performance in the solar blind spectrum. Results detail signal/noise statistics and receiver performance under varying conditions.
Area of Science:
- Optics and Photonics
- Wireless Communication
- Sensor Technology
Background:
- Non-line-of-sight (NLOS) communication presents challenges for signal integrity.
- Ultraviolet (UV) spectrum offers potential for secure, short-range communication.
- Photon counting detectors are crucial for low-light signal detection.
Purpose of the Study:
- To quantify link losses in short-range NLOS UV communication.
- To evaluate the performance of photon counting detectors in the solar blind spectrum.
- To analyze the impact of various environmental and geometric factors on communication link performance.
Main Methods:
- Utilized light-emitting diodes (LEDs) with divergent beams for transmission.
- Employed a solar blind filter to isolate the UV spectrum.
- Used a wide field-of-view detector for signal reception.
- Characterized signal and noise statistics under experimental conditions.
Main Results:
- Demonstrated NLOS UV communication link losses.
- Quantified photon counting detector performance in the solar blind regime.
- Analyzed the influence of transmitter/receiver elevation angles, separation distance, and path loss on performance.
Conclusions:
- Experimental validation of NLOS UV communication feasibility.
- Performance metrics for photon counting detectors in solar blind UV spectrum established.
- Data provides insights for designing robust UV communication systems.
