&lt;title&gt;NLOS UV communication for distributed sensor systems&lt;/title&gt;

Shaw, Gary A.; Nischan, Melissa L.; Iyengar, Mrinal A.; Kaushik, Sumanth; Griffin, Michael K.

doi:10.1117/12.407519

Cited by 62 publications

(28 citation statements)

References 13 publications

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“…The bandwidth efficiency of the OOK system is given by the ratio of a pulse duration versus bit interval, or [3]:…”

Section: Bit Error Rate Analysismentioning

confidence: 99%

“…As long as the pulse duration is a fraction of the bit interval, the bit interval retains its integrity and may be filtered or used as a reference clock. The data rate of the bit stream is indirectly proportional to the bit interval, as [3]:…”

Section: Bit Error Rate Analysismentioning

confidence: 99%

“…The two main sources of noise accounted for in this OOK channel model are the noise power associated with the dark current of the detector being used, P dark , in addition to the measured ambient background radiation and light at the detector, P ambient . The noise power of the detector's dark current is provided by [3]:…”

Section: Bit Error Rate Analysismentioning

confidence: 99%

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A low-cost NLOS ultra-violet V2I identification system for vehicular theft recovery

Ashtari

Mao

Hamilton

2013

2013 International Conference on Connected Vehicles and Expo (ICCVE)

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With increasing populations in urban areas, an intelligent means of vehicular identification, tracking, and communication becomes a necessity. In this paper, an optical alternative to radio frequency identification (RFID) using ultraviolet (UV) light is presented. A non-line-of-sight (NLOS) UV vehicle-to-infrastructure (V2I) system is proposed to establish proof of concept. The performance of a proto-type communication system demonstrating the use of UV lamps and on-off keying (OOK) to transmit an identification number over free space channels up to 30 m (~100 ft) is analyzed. Although a proto-type, the ultra-violet identification (UVID) system yields an effective, discrete solution towards unidentified terrestrial vehicle identification. Several applications of UVID within amber alert scenarios, recovery of stolen vehicles and vehicular networking are analyzed. Implementations in development including a low power UV LED-based transceiver adapted for car headlights capable of vehicle-to-vehicle (V2V) communication and its applications within intelligent vehicle design are discussed as well.

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“…The bandwidth efficiency of the OOK system is given by the ratio of a pulse duration versus bit interval, or [3]:…”

Section: Bit Error Rate Analysismentioning

confidence: 99%

Section: Bit Error Rate Analysismentioning

confidence: 99%

See 1 more Smart Citation

A low-cost NLOS ultra-violet V2I identification system for vehicular theft recovery

Ashtari

Mao

Hamilton

2013

2013 International Conference on Connected Vehicles and Expo (ICCVE)

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“…The deep UV light is efficiently absorbed in the air and, consequently, prevents interception of the communication signal by enemy located at a distance from the squad using the NLOS system. In the NLOS system, a small fraction of the modulated UV light at 280 nm, which is emitted by an LED-based transmitter, is scattered by molecules and aerosols in the air to be detected at a distance of up to ∼250 m. The signal outside this range is too weak to be detected [20]. Solar-blind detectors for these systems are also fabricated using AlGaN epilayers.…”

Section: Applications Of Iii-nitride-based Uv Ledsmentioning

confidence: 99%

Ultraviolet light emitting diodes

Тамулайтис¹

2011

Lith. J. Phys.

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The paper presents a review of the recent development of III-nitride based deep UV light emitting diodes (LEDs). Main applications of the deep UV LEDs are introduced. Review of material issues is focused on the lattice mismatch between the substrate and the active layer and at heterojunctions in multiple quantum well structures forming the active layer, the localization of nonequilibrium carriers, the material properties limiting the internal quantum efficiency, and the effect of efficiency droop at high density of nonequilibrium carriers. AlGaN is currently the semiconductor of choice for development of deep UV LEDs, so this material is the most discussed one in this review, though some information on AlInGaN is also provided.

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“…Ultraviolet light signal will be influenced by the atmosphere condition while transmitting in the atmosphere [3][4][5]. The UV communication channel of the naval vessels is the low layer of marine atmosphere, the environment of marine atmosphere will have effect on performance.…”

Section: Introductionmentioning

confidence: 99%

Research on performance of marine UV communication

Wang

Gao

2008

2008 11th IEEE International Conference on Communication Technology

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On the basis of analyzing the environment of marine atmosphere, this paper investigated the effects of marine atmospheric environment on the transmittance of Ultraviolet (UV)light, and gained a conclusion that under marine atmospheric environment the effect of wind speed on the UV atmospheric transmittance is very small, but cloud, rain and fog are all disadvantageous. Simulations of two kinds of modulation under various environments using the MODTRAN model shows that the distance of BPSK is 7% farer than that of BFSK.

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<title>NLOS UV communication for distributed sensor systems</title>

Cited by 62 publications

References 13 publications

A low-cost NLOS ultra-violet V2I identification system for vehicular theft recovery

A low-cost NLOS ultra-violet V2I identification system for vehicular theft recovery

Ultraviolet light emitting diodes

Research on performance of marine UV communication

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