60 GHz MMW Applications Eino Kivisaari Helsinki University of Technology Telecommunications 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 / Region Frequency Range [GHz] Purpose Europe 62–63, 65–66MBS 59–62WLAN USA59–64General purpose Japan59–66 Wireless Communication

60 GHz CONS Complex & sophisticated radio technology  Expensive, especially compared to UWB  Difficult RF circuit technology and expensive GaAs semiconductors needed Not as power-efficient as UWB  60 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

Application Capacity per user Mb/s Low cost requirement Wireless LAN bridge, e.g., for interconnecting GigaEthernet LANs in different buildings No Wireless virtual reality allowing free body movements450Yes Wireless IEEE , 200, 400Yes Wireless TV high-resolution recording camera No Wireless trading terminal having multiple video channels that can be viewed simultaneously for monitoring world news next to stock quote information 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 Yes Wireless (high-quality) videoconferencing10-100Yes Wireless Internet download of lengthy files10-100Yes Wireless ad hoc communications, i.e., direct communication between notebooks, between notebook and nearby printer, etc. 0,1-100Yes Wireless interactive design20-40Yes Hospital bedside application allowing wireless retrieval of patient’s status including X– ray pictures 10Yes Wireless surveillance cameras allowing face and number plate recognition at long distances 4–10Yes Patient monitoring (patients can walk freely around in the hospital or even at home) with devices that transmit ECG, blood pressure information, etc. 2Yes Wireless videophone1,5Yes 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 0,1Yes Wireless billing (e.g., automatic payment for petrol service via wireless connection between car and filling station) 0,1Yes Road pricing0,1Yes Wireless burglar alarm (wireless window sensors, etc.)0,01Yes Remote control (TV, lighting, door/window lock0,01Yes Wireless embedded systems (e.g., in car between oil filter and dashboard)0,01Yes