Unit for Radio Communications

Fundamentals of Mobile Radio Communications (status SS 2007)




1 Introduction

 1.1 What is mobile (radio) communication ?

 1.2 Basic architectures 

  1.2.1 Direct and indirect transmission 

  1.2.2 Simplex and duplex transmission 

  1.2.3 Non-selective and selective addressing 

  1.2.4 Multiple access 

  1.2.5 Example: cellular mobile radio systems 

 1.3 Cellular concept 

  1.3.1 Frequency band reuse 

  1.3.2 Interference problem and clustering 

  1.3.3 Cell sizes, formats and handover 

 1.4 Generations of cellular systems 

  1.4.1 First generation 

  1.4.2 Second generation 

  1.4.3 Third generation 

 1.5 System aspects 

  1.5.1 Radio interface 

  1.5.2 Noise and interference 

  1.5.3 Noise limited and interference limited systems 

  1.5.4 System load vs. quality of service 

  1.5.5 Spectrum efficiency and spectrum capacity 

2 Multiple access methods 

 2.1 Basic problem 

 2.2 Frequency division multiple access 

 2.3 Time division multiple access 

 2.4 Space division multiple access 

 2.5 Code division multiple accesss 

 2.6 Hybrid MA schemes 

 2.7 Valuation of multiple access methods 

3 Mobile radio channel 

 3.1 Shadowing, multipath transmission and time-variance 

 3.2 Slow fading 

  3.2.1 Definition, physical explanation 

  3.2.2 Temporal dynamics of slow fading 

  3.2.3 Propagation loss 

  3.2.4 Average received power 

 3.3 Fast fading 

  3.3.1 Definition, physical explanation 

  3.3.2 Temporal dynamics of fast fading 

  3.3.3 Rayleigh and Rician fading 

 3.4 Channel impulse response and transfer function 

  3.4.1 Equivalent low-pass domain 

  3.4.2 Time invariant channel 

  3.4.3 Time variant channel 

  3.4.5 Frequency-selectivity ad non-frequency-selectivity 

 3.5 Stochastic description of mobile radio channels 

  3.5.1 Wide sense stationary channel with uncorrelated scattering (WSSUS) 

  3.5.2 Relations between equivalent channel characterizations 

  3.5.3 Spaced-frequency spaced-time correlation function 

  3.5.4 Spaced-time correlation function and coherence time 

  3.5.5 Spaced-frequency correlation function and coherence bandwidth 

  3.5.6 Multipath time covariance function 

  3.5.7 Delay power spectrum and delay spread 

  3.5.8 Scattering function and Doppler effect 

  3.5.9 Doppler cross power spectrum 

4. Noise and interference, system aspects 

 4.1 Carrier power, interference power and noise power 

 4.2 Power control 

 4.3 Cellular interference function 

 4.4 C/I-distributions


There is a script and Exercises for the lecture.


  •  R.C.V. Macario (Editor): Personal and Mobile Radio Systems 
  • R. Prasad: Universal Wireless Personal Communications 
  • W.C.Y. Lee: Mobile Cellular Telecommunications Systems 
  • B. Walke: Mobilfunknetze und ihre Protokolle
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