Difference between revisions of "Building Mobile and Wireless Networks Compendium"
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* <span style="color:#000B80"> what happens if I double the frequency (900 - 1800 - 2400 Unik/MHz)?</span> | * <span style="color:#000B80"> what happens if I double the frequency (900 - 1800 - 2400 Unik/MHz)?</span> |
Revision as of 21:03, 20 September 2014
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Disclaimer: This compendium provides information on aspects of radio wave propagation, antennas, system aspects, and handover schemes for mobile and wireless systems. The compendium is foreseen for the UNIK4700 course on Building Mobile and Wireless Networks, and is kept on the system aspects level. UNIK has several courses on Radio and Network technologies as part of the Wireless Networks and Security (WNaS) research area.
Contents
UNIK 4700 Building Mobile and Wireless Networks
- Title
- Building Mobile and Wireless Networks
- Subtitle
- Table-of-Content
- Author
- Josef Noll
- Footer
- Building Mobile and Wireless Networks Compendium
- Subfooter
- UNIK4700/UNIK9700
⌘ History and Future
- History of wireless communications
- Maxwell, Hertz, Marconi and other pioneers
- 1G, 2G ... 5G networks
- Frequencies and Standards
- Future Challenges
⌘ TOC - Basics of communication
- Electromagnetic signals
- Radio Communication principles
- Digital communication: Nyquist, Signal/Noise Ratio
- Signal strength and Capacity: Shannon
⌘TOC - Antennas and Propagation
- Free Space Propagation
- Antennas, Gain, Radiation Pattern
- Multipath Propagation, Reflection, Diffraction
- Attenuation, Scattering
- Fading (fast, slow, flat, selective, Rayleigh, Rician, …)
- Mobile Communication dependencies
What have we learned?
- antenna characteristics and gain
- what happens if I double the frequency (900 - 1800 - 2400 Unik/MHz)?
- minimum GSM receiver sensitivity
- typical receiver power at 900 Unik/MHz (GSM channel sounder - rural)
- typical received power at 1800 Unik/MHz (GSM channel sounder - rural)
- difference City - rural - indoor
- principal operation of MIMO
⌘TOC - Propagation models
- Environments (indoor, outdoor to indoor, vehicular)
- Outdoor (Lee, Okumura, Hata, COST231 models)
- Indoor (One-slope, multiwall, linear attenuation)
⌘TOC System Comparison
- proximity: RFID, NFC
- short range: ZigBee, Bluetooth, ANT+ and Wibree
- local: WLAN/Wifi/802.11...
- mobile: GSM, UMTS, IMT-A (WiMAX, LTE)