TU Delft
Education Type
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2006/2007 Electrical Engineering, Mathematics and Computer Science Master Electrical Engineering
Wireless Communications
Responsible Instructor
Name E-mail
Prof.dr.ir. I.G.M.M. Niemegeers    I.G.M.M.Niemegeers@tudelft.nl
Name E-mail
Dr.ir. G.J.M. Janssen    G.J.M.Janssen@tudelft.nl
Dr. A.C.C. Lo    A.C.C.Lo@tudelft.nl
Dr.ir. J.H. Weber    J.H.Weber@tudelft.nl
Education Period
Exam Period
Course Language
Course Contents
The Wireless Communications course provides a broad overview of the essential aspects of generic wireless communications. Physical layer, Link layer (including MAC) and Network layer issues, as well as their interaction are treated. The course uses the IEEE standard P802.11 for Wireless Local Area Network (WLAN) for short-range high data-rate communications (also called WiFi) as a "red thread". The following aspects will be covered in the course (preliminary course contents):

1. Indoor radio propagation
*review of radio propagation, link-budget model
* introduction of multipath propagation
- time domain : rms-delay spread, signal dispersion, inter-symbol interference
- frequency domain: frequency selectivity, coherence bandwidth
* wall/floor/coated window attenuation
* path-loss model
* channel models
- stochastic modeling,
- how to use a stochastic model
* model parameters for some characteristic indoor environments

2. Modulation techniques applied in WLAN
* Direct Sequence Spread Spectrum (DS-SS)
* Frequency Hopping Spread Spectrum (FH-SS)
* Orthogonal Frequency Division Multiplexing (OFDM)
* Higher order modulation schemes (review) that can be applied in combination with the schemes discussed
above: BPSK, QPSK, M-QAM

3. Robustness against interference
* Interfering sources
* Coexistence
- interference avoidance
- interference-reduction, -suppression or -cancellation
* Frequency reuse: cellular concept
* Power control
- link-gain model
- power control scheme: maintaining required CIR, eigen value solution

4. Diversity
* Frequency diversity
* Space/location diversity
- Antenna diversity: selection diversity, maximal ratio combining
* Time diversity: interleaving

5. Coding
* Characterization of error types
* Basics of error control coding:
- Automatic repeat requests (ARQ)
- Forward error correction (FEC)
- Hybrid methods
* Code design: trade-off between efficiency, reliability, complexity/delay
* Block & convolutional codes
* Viterbi decoding
* Puncturing
* Interleaving

6. Medium Access Control (MAC) Layer
* 802.11 Family of Standards
* Network and Protocol Architecture

7. Mobility and Security
* 802.11f - IAPP
* 802.11 - Security Issues
* 802.11i Security

8. WLAN Deployment
* Deployment Issues and Development
* System Considerations
* WLAN MAC and PHY Deployment
Study Goals
The student has obtained insight in the different relevant aspects of wireless mobile communications systems related to the Physical- , Link- and the Network layers (propagation, modulation, coding, diversity, interference prevention, MAC, security and WLAN deployment), and is able to explain the relations between the different issues and trade-offs that can be made. Basic design problems can be solved based on calculations.
Education Method
Literature and Study Materials
Rappaport, T.S., "Wireless Communications: Principles and Practice", 2nd ed., ISBN 0-13-042232-0, Prentice Hall, 2002,
Schiller, J.H., "Mobile Communications", 2nd ed., ISBN 0-321-12381-6, Pearson Education Limited, 2003.
Written, with open book.
Permitted Materials during Tests
During the written exam it is allowed to use an electronic calculator and the book "Wireless Communications: Principles and Practice" of T.S. Rappaport.
This course belongs to the compulsory part of the MSc. Program Telecommunications.