I actua device-"s o .I f aillme4e 1 6d subLrimili . ' mete wave banids i preSented.Th e clntoM e ore o eletrMagneti oscillations with increasect~~~~~~~~~~~~L LbGrQr andx~T efciecyinmLlietuer and microwavedevies with diswr fild-letrniner-io. h sumifferenc between . bakwr wbe osiltr (BWO) an clntrn 4 A~~~~~C V 4.1,I Mc0fl5l v u l eiD vdppiicaIiOwiith d 0J i uuLr k' e cl`ttir" n OCafle li-Y-wth er' !" K --H e lowrt feruvee e,t n n srrkTherauL-ng e tag an he fou0rg~agm fi^1 reld; arm vi ig,o " izu of'an it bra beam rl u h d be whal dev-uiz -, -e INRDUT4n a7,1J , -tn rEacJLlol,esuclil a t WICULLUh ct C r noer iCf-S Theefore su~esteVwhIcnca allow to develo BWO-, like me~s o thne+ use _ to 10 _L .i The auhr haefonthtatb:lcrn em cauable _ of hghl efficient irrmsto wit te,*o fe:d., thus bhein suitabl~~~~m mi±w~~~meter and artIcuarly uomLLlt-nmtc: wave hasWciben ammed cieE thu trtn, in-thers~act i on" an ther ,, i,-tub ma tug_ us 011c onuro SI t;dcmte reonirements t õ~~~~~~~~k po ie and imagteticw fveiel beaD Institute of Radf-nhysics an Elecronc,th-kaiinAcdm 4 1' C{~~~~~~3~~H-i7~~~~~--, 4 cw,vLrasnA2nameruzcfy ad.hLItA. ixiuxrruuV eR eviiTTh 603
We developed a wireless duplex communication system using visible light communication concept. In this work we investigated a downlink data transmission channel. We modelled the optical configuration of the system, calculated optical losses, fabricated the system and measured downlink channel parameters under test of analog and digital signals. The analysis showed that with a heterodyne scheme used for transmitting signals through visible light, the model of additive Gaussian noise is applicable to the channel and there are no phase distortions in the system. The system has shown the capability to operate with modulation types according 802.11 IEEE protocol.
We developed wireless visible light simplex data transmission channel and error correction algorithm for the reciever. The system was design specially for using modern smartphone device as a receiver and a conventional domestic LED illuminator as transmitter. We calculated highest probable data transfer speed in our communication channel, fabricated the transmitter modulator and developed the client application for an android smartphone equipped with stock camera module, perform a series of data speed measurements and conducted the analysis of both analog and digital signals. The system allowed to transmit data with rates up to 8 kbps on distance up to 1.5 meters.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.