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