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60 GHz MMW Applications

Helsinki University of Technology Telecommunications and Multimedia Laboratory. 60 GHz MMW Applications. 9.4.2003 Eino Kivisaari. MAIN GOAL. To position the 60 GHz technology on a wireless communications roadmap Where is 60 Ghz needed and by whom?. INTRO TO 60 GHz.

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60 GHz MMW Applications

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  1. Helsinki University of Technology Telecommunications and Multimedia Laboratory 60 GHz MMW Applications 9.4.2003 Eino Kivisaari

  2. MAIN GOAL • To position the 60 GHz technology on a wireless communications roadmap • Where is 60 Ghz needed and by whom?

  3. 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 capacityis high • Propagation • Range: tens of meters indoors, up to 500/1000 m outdoors • Walls are a blocking obstacle, corners are not

  4. 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

  5. 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

  6. 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

  7. 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

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