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Expand the setup to 4x4 s-MIMO

Stakeholders. -Lighting Industries -Health Care Industries -Communications Industries. -Prototypes -Design Standards -Integration Protocols. Indoor Diffuse Optical MIMO Communication System. Products & Outcomes. Requirements. Efficient Full Spectrum Lighting.

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Expand the setup to 4x4 s-MIMO

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  1. Stakeholders -Lighting Industries -Health Care Industries -Communications Industries -Prototypes -Design Standards -Integration Protocols Indoor Diffuse Optical MIMO Communication System Products & Outcomes Requirements Efficient Full Spectrum Lighting Display Illumination Fusion Data Room Healthy Room BARRIERS - System Cost - Lighting Designer acceptance - Light/RF Wireless standards integration - Clinical Impacts SYSTEM REQUIREMENTS Adaptive Lighting Testbed Biochemical Sensing Testbed CommunicationsTestbed Communications Testbed Pankil Butala, Jimmy Chau, Hany Elgala and Prof. Thomas D. C. Little1Sagar Ray, Ethan Spitz and Prof. Mona Hella2 Ali Mirvakili and Prof. Valencia Koomson3 1Boston University, 2Rensselaer Polytechnic Institute, 3Tufts University TechnologyIntegration System Performance Feedback Level 3: Systems Fundamental Insights Technology Elements Human Factors & Interfaces Light Flow Modeling Adaptive Sampling & Control Modeling BARRIERS - Color and intensity uniformity maintenance - Stray light impact on sensor SNR - Lack of source/sensor communications protocols -Biochem-identification & discrimination Subsystems & Protocols T1.2.3 Advanced Luminaires Biochemical Sensors Communication Transceiver & Protocol TechnologyBase Level 2: Enabling Technologies Performance Feedback Opto Electronic Device Design Nano LED Technology Color-selective High Speed Sensors Photonic Crystal Optics Project Goals Research Results Future Work BARRIERS - Inefficient LEDs (except Blue) - Limited bandwidth of sources - Lack of color discriminating sensors - Lack of monolithic optoelectronic integration Materials & Devices III-Nitride Epitaxy High Efficiency Phosphors Plasmonic Structures KnowledgeBase Level 1: Fundamental Knowledge MulticoloredLuminaires Transmitter • Develop system to service high speed wireless data access along with controllable indoor space illumination Hybrid MIMOChannel Imaging Optics Imaging Sensor Multicolored ImagingReceiver Sketch: Spatial Division Multiplexing MIMO VLC System Pixel • : Radiant flux output from transmitter j • Free Space Gain • Optics Gain • Image Magnification • Image Gain • Aggregate Channel Gain • Received Signal Power • is combining algorithm Spot Sketch: Hybrid MIMO VLC System MIMO System Block Diagram • Expand the setup to 4x4 s-MIMO • Incorporate FPGAs at the transmitter and receiver to demonstrate high speed wireless VLC link • Install the setup in VLC + adaptive lighting testbed to demonstrate illumination, control and VLC in an integrated system • Investigate wavelength division multiplexing (λ-MIMO) VLC system and optimize for different use cases • Investigate wavelength division spatial multiplexing (hybrid-MIMO) and optimize • Develop/Acquire color tunable luminaire capable of high speed modulation • Develop specifications for multicolored imaging receiver • Demonstrate SOA and proof of concepts • High data rates achieved using Multi-Input, Multi-Output (MIMO) communication techniques • Illumination control is achieved using multicolor luminaires Project’s ERC Role b a d Societal Benefits Efficiency: Automated,controllable illumination leads to efficient use of electrical power and thus large energy savings c Project area (highlighted) in the 3 plane diagram • Interact with adaptive lighting testbed to engineer a shared illumination + communication system • Interact with high speed drivers and advanced luminaires group to engineer high speed color controllable luminaires for system • Interact with advanced sensors group to engineer high speed receivers for system a) System setup at Boston University b) Tufts Transmitter c) RPI Receiver d) 2x2 channels as seen on oscilloscope Health: Controllable illumination and higher data rates enable smart room services that can monitor and improve health Productivity: Higher wireless data bandwidths can enable new sophisticated real time applications that can improve productivity Relevant Research b a • Zeng et al, “High data rate MIMO optical wireless communications using white led lighting”, Selected areas in communications, IEEE Journal on, 2009 • 6x6 transmitter array • 0.4W per transmitter • 12x12 (5.91cm x 5.91cm) detector array • OOK-NRZ, BER < 10-6 • Equalized White Channel • Data Rate = 1080 Mbps c Acknowledgements This work is supported by the NSF under cooperative agreement EEC-0812056 and by New York State under NYSTAR contract C090145. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Channel de-correlation experiment: a) Block signal output from each transmitter one at a time b) Lose signal from transmitter 1 c) Lose signal from transmitter 2

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