Post on 20-Jan-2016
60 GHz MMW Applications
9.4.2003 Eino Kivisaari
Helsinki University of TechnologyTelecommunications and Multimedia Laboratory
To position the 60 GHz technology on a wireless communications roadmap
Where is 60 Ghz needed and by whom?
MAIN GOAL
INTRO TO 60 GHz High bandwidth radio transmission
Frequency range appr. 58–64 GHz several GHz of bandwidth allocated wordwide
for 60 GHz telecommunication
Very high speed wireless connections theoretically up to 1 Gb/s
Little interference Does not interfere with existing wireless systems Due to oxygen attenuation, spatial capacity is high
Propagation Range: tens of meters indoors,
up to 500/1000 m outdoors Walls are a blocking obstacle, corners are not
60 GHz PROS
Very high connection speeds, up to 1 Gb/s– enabler of new services and functions especially in corporate high-end market
Less unknowns than in UWB If UWB is compromised by interference or
regulatory issues, 60 GHz might be the only solution for very high speed wireless
Huge Unlicensed Radio Spectrum
Country / RegionFrequency
Range [GHz]Purpose
Europe
62–63, 65–66 MBS
59–62 WLAN
USA 59–64 General purpose
Japan 59–66Wireless
Communication
60 GHz CONS
Complex & sophisticated radio technologyExpensive, especially compared to UWBDifficult RF circuit technology and expensive
GaAs semiconductors needed
Not as power-efficient as UWB60 GHz power amplifier efficiency is
low with current technology
60 GHz APPLICATIONS
High-end wireless solutions for corporate use 60 GHz WLANs reliable, very high speed connetions today: applications where power and price are not crucial Won’t propagate through walls one AP needed for each room
One-room coverage inside, building-to-building outside Fixed Wireless, 500–1000 m
Heavy rain causes significant attenuation
Not in mobile terminals too high power consumption, too expensive
60 GHz FUTURE
Price and power consumption may be decreased in the future by higher integration of components Preamp, mixer, power amplifier into one chip
OFDM seems to be the best modulation scheme With orthogonally divided spectrum it is easy to optimize power
consumption in devices that don’t need maximum data rates OFDM complexity grows only moderately with data rates
Japan is the technology leader in 60 Ghz demand for high spatial capacity in domestic market
ApplicationCapacity per
user Mb/sLow cost requirement
Wireless LAN bridge, e.g., for interconnecting GigaEthernet LANs in different buildings 100-1000 No
Wireless virtual reality allowing free body movements 450 Yes
Wireless IEEE 1394 100, 200, 400 Yes
Wireless TV high-resolution recording camera 150-270 No
Wireless trading terminal having multiple video channels that can be viewed simultaneously for monitoring world news next to stock quote information
50-100 No
Wireless news tablet, a very thin, possibly flexible device that provides the user with a newspaper, e.g., the possibility of activating images to see video impressions
50-100 Yes
Wireless (high-quality) videoconferencing 10-100 Yes
Wireless Internet download of lengthy files 10-100 Yes
Wireless ad hoc communications, i.e., direct communication between notebooks, between notebook and nearby printer, etc.
0,1-100 Yes
Wireless interactive design 20-40 Yes
Hospital bedside application allowing wireless retrieval of patient’s status including X–ray pictures
10 Yes
Wireless surveillance cameras allowing face and number plate recognition at long distances
4–10 Yes
Patient monitoring (patients can walk freely around in the hospital or even at home) with devices that transmit ECG, blood pressure information, etc.
2 Yes
Wireless videophone 1,5 Yes
Wireless connection between domestic appliances and the Internet e.g. a refrigerator scans its contents and orders the nearby supermarket to deliver what is missing
0,1 Yes
Wireless billing (e.g., automatic payment for petrol service via wireless connection between car and filling station)
0,1 Yes
Road pricing 0,1 Yes
Wireless burglar alarm (wireless window sensors, etc.) 0,01 Yes
Remote control (TV, lighting, door/window lock 0,01 Yes
Wireless embedded systems (e.g., in car between oil filter and dashboard) 0,01 Yes