⌘TOC on AA1-History
Building .... Networks
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History, Now and Future
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History
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Pioneers: Maxwell, Hertz,...
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1G, 2G,... 5G networks
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Frequencies and Standards
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Future Challenges
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A-Basics of Communication
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Electromagnetic Signals
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Radio Communication Principles
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Digital communication: Signal/Noise Ratio
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Signal strength and Capacity: Shannon
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B-Antennas and Propagation
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Free Space Propagation
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Antennas, Gain, Radiation Pattern
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Multipath Propagation, Reflection, Diffraction
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Attenuation, Scattering
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Interference and Fading (Rayleigh, Rician, …)
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Mobile Communication dependencies
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C-Propagation models
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Environments (indoor, outdoor to indoor, vehicular)
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Outdoor (Lee, Okumura, Hata, COST231 models)
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Indoor (One-slope, multiwall, linear attenuation)
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D-System Comparison
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Proximity: RFID, NFC
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Short Range: ZigBee, Bluetooth, ANT+,...
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WLAN/Wifi/802.11...
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Mobile: GSM, UMTS, IMT-A (WiMAX, LTE)
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E-Mobility
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Mobile Network mobility
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IP mobility
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F-Network Building
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5G and Future Networks
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5G Heterogeneous Networks
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Basic Internet
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Video Distribution Networks
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Coverage simulations
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Coverage simulations
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Traffic simulations
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Network Capacity simulations
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Building .... Networks
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⌘The real researchers
- Michael Faraday (1791 - 1867), focussing on the static fields
- James Clerk Maxwell (1831 - 1879), establishing the Maxwell equations for the interaction of the electrical and the magnetic component of an electromagnetic wave
- Heinrich Rudolf Hertz (1857 - 1894) experimented the theory for the understanding of electromagnetic waves
[Source:Magne Pettersen, Wikipedia]
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⌘Heinrich Hertz - The electromagnectic wave
Hertz did not realise the practical importance of his experiments. He stated that,
"It's of no use whatsoever[...] this is just an experiment that proves Maestro Maxwell was right - we just have these mysterious electromagnetic waves that we cannot see with the naked eye. But they are there." [3]
Asked about the ramifications of his discoveries, Hertz replied,
"Nothing, I guess." [3]
Note
The experiments, demonstrating the relation between the electrical and the magnetic component of the electromagnetic wave, was probably the most important discovery of Heinrich Hertz.
⌘The real researchers
Guglielmo Marconi (1874 - 1937) experimented with Hertz waves in 1894/1895
- used 50000 UK pound on a transatlantic experiment in 1901
- brought electromagnetics to life
[Source:Magne Pettersen, Wikipedia]
⌘The real researchers - Graham Bell
- Graham Bell (1874 -1922) invented the phone,...
- but who invented also the mobile phone back in 1924?
Bell considered his most famous invention an intrusion on his real work as a scientist and refused to have a telephone in his study
[Source:Magne Pettersen, Wikipedia]