November 9, 2011 Professor Harald Haas with acknowledgements to: Research Fellows and PhD Students I had the pleasure to work with in the past few years Public funding bodies and industry who have been supporting my research Shedding Light on Future Wireless Communications School of Engineering Institute of Digital Communications
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November 9, 2011
Professor Harald Haas
with acknowledgements to:
Research Fellows and PhD Students I had the pleasure to work with in the past few years
Public funding bodies and industry who have been supporting my research
Shedding Light on Future Wireless Communications
School of EngineeringInstitute of Digital Communications
Do we better give each link half the bandwidth(each one having half the maximum capacity) andhave no interference, or should both links transmit using the full bandwidth, but allowinterference?
Spatial multiplexing MIMO significantly improves spectral efficiency, but:
Suffers from inter-channel interferenceresulting in high computational complex algorithms (e.g., Vertical – Bell Labs Layered Space Time (V-BLAST) algorithm)Requires inter-antenna synchronisation (IAS)Requires multiple RF-chains (→ expensive)Suffers from error propagation
But, we have 14 billion light bulbs These emit visible light which is part of the electromagnetic spectrum So, the intriguing question is, can we use them for high speed data communications… Look at this in the context of the entire electromagnetic spectrum…
Transportation – cars to communicate with each other to prevent collisions, Traffic lights to communicate with cars, etc.
Vorführender
Präsentationsnotizen
Street lamps providing ubiquitous wireless access on streets
09/11/201153
Image credits (via Flickr)
“iPhone” by Vincent Huang “Ooievaarsnest in aanbouw” by Vincent Teeuwen“Luces Nubladas” by David Cabrera “Charing Cross” by Jenny Koske“expl1196” by NOAA Photo Library “ILM: Industrial Lighting and Magic” by Photogism Group “easyJet A321 Cabin” by WebDub‘s“Unloved Box, Bentley, Hampshire” by Mike Cattell