• Mobile channels (2 experiments):
  

Characteristics of real mobile radio channels such as distortions and time variability, models for mobile radio channels, effects on the performance of a mobile radio system

• Diversity and channel coding for the example GSM / EDGE:
  

Space, frequency and time diversity, interleaving and channel coding, Viterbi decoding, residual error structure, Hamming distance and diversity degree, theoretical limits, transmission of audio samples

• Equalization of mobile radio channels for the example GSM / EDGE (2 experiments):
  

Principles of different equalization methods, equalizer design for GSM / EDGE, simulation of trellis-based equalizers and visualization of the results

• CDMA and Rake receivers for the example UMTS:
  

Introduction to the operation of a CDMA system, characteristics of spreading and scrambling sequences, operation and performance of the rake receiver

• Orthogonal Frequency Division Multiplexing (OFDM):
  

Principle of OFDM, implementation-relevant aspects such as nonlinearities and peak-to-average-power ratio, synchronization and equalization

• Mobile network simulation for the examples GSM / EDGE and UMTS:
  

Cellular concept, system capacity, dynamic transmission power control, impact on connectivity quality, handover: principle and different criteria, impact of participant speed on performance

Versuche:

• Mobilfunkkanäle (2 Versuche):

Eigenschaften realer Mobilfunkkanäle wie Verzerrungen und Zeitvarianz, Modelle für Mobilfunkkanäle, Auswirkungen auf die Leistungsfähigkeit eines Mobilfunksystems

• Diversity und Kanalcodierung am Beispiel GSM/EDGE:

Raum-, Frequenz- und Zeit-Diversity, Interleaving und Kanalcodierung, Viterbi-Decodierung, Restfehlerstruktur, Hamming-Distanz und Diversity-Grad, theoretische Grenzen, Übertragung von Hörproben

• Entzerrung von Mobilfunkkanälen am Beispiel GSM/EDGE (2 Versuche):

Prinzipien verschiedener Entzerrverfahren, Entzerrerdesign für GSM/EDGE, Simulation von trellisbasierten Entzerrern und Visualisierung der Ergebnisse

• CDMA und Rake-Empfänger am Beispiel UMTS:

Einführung in die Funktionsweise eines CDMA-Systems, Eigenschaften von Spreiz- und Verwürfelungssequenzen, Funktionsweise und Leistungsfähigkeit des Rake-Empfängers

• Orthogonal Frequency Division Multiplexing (OFDM):

Prinzip von OFDM, implementierungsrelevante Aspekte wie Nichtlinearitäten und Spitzenwertfaktor, Synchronisation und Entzerrung

• Funknetzsimulation am Beispiel GSM/EDGE und UMTS:

Zellulares Konzept, Systemkapazität, dynamische Sendeleistungsregelung, Auswirkung auf die Verbindungsqualität, Handover: Prinzip und verschiedene Kriterien, Auswirkung der Teilnehmergeschwindigkeit auf die Leistungsfähigkeit

Title:

Mobile Communications Laboratory

Credits: 2,5

Contents

Experiments:

• Mobile channels (2 experiments):
  

Characteristics of real mobile radio channels such as distortions and time variability, models for mobile radio channels, effects on the performance of a mobile radio system

• Diversity and channel coding for the example GSM / EDGE:
  

Space, frequency and time diversity, interleaving and channel coding, Viterbi decoding, residual error structure, Hamming distance and diversity degree, theoretical limits, transmission of audio samples

• Equalization of mobile radio channels for the example GSM / EDGE (2 experiments):
  

Principles of different equalization methods, equalizer design for GSM / EDGE, simulation of trellis-based equalizers and visualization of the results

• CDMA and Rake receivers for the example UMTS:
  

Introduction to the operation of a CDMA system, characteristics of spreading and scrambling sequences, operation and performance of the rake receiver

• Orthogonal Frequency Division Multiplexing (OFDM):
  

Principle of OFDM, implementation-relevant aspects such as nonlinearities and peak-to-average-power ratio, synchronization and equalization

• Mobile network simulation for the examples GSM / EDGE and UMTS:
  

Cellular concept, system capacity, dynamic transmission power control, impact on connectivity quality, handover: principle and different criteria, impact of participant speed on performance