Yoon-chae Cheong_Cognitive Radio and Future Network.pdf ...
Yoon-chae Cheong_Cognitive Radio and Future Network.pdf ...
Yoon-chae Cheong_Cognitive Radio and Future Network.pdf ...
- No tags were found...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Spectrum ScarcityTotal amount of required spectrum is expected up to 1280~1720MHz by 2020For mobile communications, preferred spectrum is mostly under 2GHz.< 1 GHz850 MHz ”Cellular”Americas410 MHz450 MHz”BC UHF”900 MHzIMTAfrica, Asia-Pacific,Europe, Middle EastALLOCATEDIDENTIFIED< 3 GHzAmericasAWS PCS 1900 AWS1800 MHz ”Core” 2 GHz2.3 GHzISM 2.45 GHz”Extension”2.5 GHz2.7 GHzAfrica, Asia-PacificEurope, Middle East< 5 GHz3400 MHz 3600 MHz 3800 MHz 4000 MHz 4200 MHz 4400 MHz 4500 MHz 4800 MHz 4990 MHz- 8 -
Change language