Courses

This course introduces fundamental technologies for wireless communications and provides an overview of the evolution trends of mobile cellular communication. We will address the following topics:

Overview of wireless and mobile communications.
Mobile radio propagation, large-scale fading, small-scale fading, multipath propagation, shadowing, empirical path loss models.
Understanding the wireless communication channel, coherence time, fast and slow fading, power delay profile, coherence bandwidth, flat and frequency-selective fading, Doppler shift, wireless channel models, diversity, diversity combining techniques.
Concept of cellular communications, frequency reuse, hard-handoff, soft-handoff, cell splitting, power control.
Multiple access schemes: FDMA, TDMA, CDMA.
Spread spectrum communications, frequency hopping, code division multiple access.
Evolution trends of mobile cellular communication.
Wireless systems and standards (1G, 2G, 2.5G and 3G systems), wireless system components.
Global system for mobile (GSM), EDGE, HSCSD, GPRS and IS-95 A.
IMT-2000 (W-CDMA, CDMA2000).

Required Text

The instructor will provide the lecture notes to the students...

Dr. Ibrahim Develi, �Lecture notes on Wireless and

Communications

�, (In Turkish).

Recommended References

John G. Proakis, �Digital communications'', 4th ed., Boston : McGraw-Hill, 2001.
K. Feher, �Wireless Digital Communications-Modulation and Spread Spectrum Applications�, Prentice-Hall, 1995.
J. Korhonen, �Introduction to 3G Mobile Communications�, Artech House, 2003.

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Graduate Courses Taught:

General Course Information

EEM 524 � Simulation of Communication Systems

Lecture Hours: 3 Credits: 3

Course Description

In the past few years, high-performance computers have been developed that enable to simulate more complex real world systems. It is easy to change the parameters and components of a communication system in a simulation, and then evaluate the performance of the modified system.

This course aims to provide an in-depth understanding on the advanced concepts for the simulation of communication systems using MATLAB. This course includes the following topics:

The role of simulation for modern communication systems.
Multidisciplinary aspects of simulation.
The major steps in developing a simulation of a communication system.
Definition of the AWGN channel and multipath fading environment by MATLAB.
Performance comparison of various phase shift keying (PSK)-based digital radio transmission schemes by computer simulation.
Simulation of the performance of Orthogonal Frequency Division Multiplexing (OFDM) systems.
BER performance evaluation of synchronized Direct Sequence-Code Division Multiple Access (DS-CDMA) which employs various types of spreading sequences.

Required References

John G. Proakis, Masoud Salehi and G. Bauch, �Contemporary Communication Systems using MATLAB^® and Simulink^®�, 2^nd Edition, Brooks Cole, 2004.
Hiroshi Harada and Ramjee Prasad, �Simulation and Software Radio for Mobile Communications'', Artech House, 2002.

Recommended References

William H. Tranter, K. Sam Shanmugan, Theodore S. Rappaport, Kurt L. Kosbar, �Principles of Communication Systems Simulation with Wireless Applications�, Prentice Hall, 2004.

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General Course Information

EEM 596 � Spread Spectrum Communications

Lecture Hours: 3 Credits: 3

Course Description

This course introduces the fundamentals of spread spectrum communications, and presents the performance of spread-spectrum communication systems under jamming environment.

The course contains the following main topics:

Introduction and short historical overview of spread spectrum communi-cation systems.
Comparison with FDMA, TDMA, and other traditional modulation schemes such as Amplitude Modulation (AM), Frequency Modulation (FM), and Phase Modulation (PM) systems.
Major spread spectrum techniques (Direct sequence spread spectrum (DSSS) and frequency-hopped spread spectrum (FHSS)).
Direct Sequence-Code Division Multiple Access (DS-CDMA) (transmitter and receiver models)
Generation and properties of some typical CDMA spreading sequences such as M-sequences, Gold sequences and Kasami sequences.
Correlation properties of the spreading sequences.
Computer simulations to analyze the performance of various spread spectrum systems.

Required Text

The instructor will provide the lecture notes to the students...

Recommended References

L. Hanzo, L-L. Yang, E-L. Kuan and K. Yen, �Single and Multi-Carrier CDMA Multi-User Detection, Space-Time Spreading, Synchronisation and Standards�, Chapter 2, Wiley-IEEE Press, 2003.