Semester Offering: January
 

The rationale behind this course is to ensure that the student attains a good understanding of both analog and digital cellular mobile systems deployed worldwide.

 

Introduction to Cellular Mobile Radio Systems. Propagation Effects and Spectral Considerations. Cellular Mobile Systems Technologies. Cellular Network Architecture. Cellular Radio Technology.

 

None

 

A. GENERAL THEORY

I. Introduction to Cellular Mobile Radio Background and History
1. Conventional Mobile Radio Versus Cellular Mobile Radio
2. Features of Cellular Radio
3. Digital Cellular Radio
4. Trends in the Use of Cellular Services

II. The Mobile Radio Environment
1. Lowpass Equivalent Representation: Bandpass Signals and Linear Bandpass Systems
2. Multipath Propagation: Path Loss, Doppler Effect, Rayleigh Fading and Rician Fading
3. Statistics of Slow and Fast Fading
4. Classification of Channels: Time Dispersion and Frequency-Selective
5. Fading, Frequency Dispersion and Time-Selective Fading
6. Mathematical Modeling of Fading Multipath Channels: Bello Functions, Description of Random Time-Variant Channels
7. Discrete-Time Representation of Channels
8. Computational Channel Models: Gaussian, Rayleigh, Rician and Wideband Channels

III. Diversity Schemes and Combining Techniques

1. Diversity Schemes: Space, Frequency, Polarization, Field Component, Angle, Time and Multipath Diversity
2. Combining Techniques: Selective, Switched, Maximal-Ratio, Equal-Gain and Baseband Combining

IV. Cochannel and Adjacent Channel Interference
1. Noise-Limited an Interference-Limited Environments
2. Cochannel Interference
3. Adjacent Channel Interference
4. Near-End-To-Far-End Ratio

V. Cellular Traffic
1. Channel Assignment
2. Capacity of Cellular Systems
3. Trunking Theory
4. Components of Cellular Systems
5. Handover

B. ANALOG FDMA SYSTEMS

I. The Analog Cellular Environment
1. Analog Modulation: Frequency Modulation, Transmission bandwidth, Signal-to-Noise Ratio, Deemphasis and Preemphasis, Capture Effect, Effect of Multipath Fading, Modulators and Demodulators for FM

II. Fading Channel Issues in Analog Systems

III. Existing Analog Cellular Radio Systems

1. European, American and Japanese Systems
2. AMPS: Network Aspects, Control Channels, Supervision, Call Origination and Receipt, Handover, Call Termination, Power Control
3. The NMT-900 System: Control Channels, Call Origination and Receipt, Handover and Location Updating, Security, NMT Mobile Station

C. DIGITAL TDMA SYSTEMS

I. The Digital Cellular Environment
1. Intersymbol Interference and Nyquist Filter
2. Nonlinear Distortion: AM/AM and AM/PM conversion
3. Fading Channel Issues in Digital Systems

II. Digital Modulation
1. Linear Modulation
2. Nonlinear Modulation Methods: Continuous Phase Modulation, Digital Phase Modulation and Digital Frequency Modulation
3. Actual Modulations Used in Mobile Communications: Gaussian Minimum Shift Keying and p/4-Shifted Differential Quadrature Phase Shift Keying
4. Receiver Structures: Coherent, Differential, and Noncoherent Detection, Detection in Presence of Frequency-Flat or Frequency-Selective Fading
5. Bit Error Rates: Gaussian Noise and Rayleigh Fading Environment
6. Channel Equalization: Zero-Forcing Equalizer, Discrete-Time Wiener Filter, Adaptive Linear Equalizer, Decision-Feedback Equalizer Carrier, Symbol and Frame Synchronization

III. Signal Processing and Data Formatting
1. Speech Coding
2. Channel Coding
3. Security: Security Mechanisms, Analog Cryptographic Techniques, Digital Cryptographic Techniques: Secret-Key and Public-Key Cryptography

IV. Existing Digital Cellular Radio Systems
1. European, American and Japanese Systems
2. The GSM System: Overview, Mapping of Logical Channels, Speech Channel, Channel Coding and Interleaving, GSM Transmitter and Receiver, Frequency Hopping, Registration, Call Origination, Paging, Handover, Security, DCS1800, Telecommunications Services

D. DIGITAL CDMA SYSTEMS

I. CDMA Systems
1. Overview of Multiple Access Methods
2. Spread Spectrum Techniques
3. CDMA Transmission and Reception: Spreading Sequences, Rake Receiver
4. Near/far problem
5. Soft Handover
6. Overlays

II. Capacity Analysis of Multiple Access Methods
1. Spectral Efficiency of FDMA,TDMA and CDMA Systems, The Qualcomm CDMA
2. Capacity Equation
3. Bit Rate Capacity of FDMA,TDMA and CDMA Systems in Single-Cell and Multicell Environment
4. Practical Differences between CDMA and FDMA/TDMA

III. IS-95 Standard for CDMA Cellular System

1. Uplink Transmission: Access and Traffic Channels
2. Downlink Transmission: Pilot, Synchronization, Paging and Traffic Channels
3. Variable Rate Speech Coding Algorithm: LPC Analysis, Choice of Data Rate, Pitch Predictor Parameters, Excitation Codeword, 14.4 kbit/s Speech Coder
4. Channel Coding and Interleaving
5. Power Control: Open Loop and Closed Loop Uplink Power Control, Downlink Power Control
6. Handover Issues
7. System Access
8. Call Origination
9. Security: Authentication, Encryption

IV. 3rd Generation CDMA Systems
1. Radio Interface Technologies of Third Generation Systems
2. WCDMA: Logical and Physical Channels, CDMA Spreading, Multirate Operation, Packet Data, Handover, Interoperability between GSM and WCDMA
3. CDMA2000: Logical and Physical Channels, CDMA Spreading, Multirate Operation, Packet Data
4. Time Division CDMA

V. 4th Generation Mobile Systems
1. Orthogonal Frequency Division Modulation (OFDM)
2. OFDM-CDMA
3. Efficient modulation and coding schemes

 

None

 

Lecture Notes, Presentation Slides, and
T. S. Rappaport:
Wireless Communications: Principles and Practice, Prentice Hall, 1996

 

Krzysztof Wesolowski
Mobile Communication Systems, John Wiley & Sons, Ltd, 2002
G. Calhoun:
Digital Cellular Radio, Artech House, 1988J. Gardiner, B. West (Ed.):
Personal Communication Systems and Technologies, Artech House, 1995
J. D. Gibson:
The Mobile Communications Handbook, CRC Press, 1996
W.C. Jakes, Jr.:
Microwave Mobile Communications, John Wiley & Sons, 1974
W.C.Y. Lee:
Mobile Cellular Telecommunications: Analog and Digital Systems, McGraw?Hill, 1995
W.C.Y. Lee:
Mobile Communications Design Fundamentals, Howard W.Sams & Co. (Macmillan), 1986
R.C.V. Macario:
Personal and Mobile Radio Systems, Peregrinus, 1991, 328 pp.,
A. Mehrotra:
Cellular Radio Performance Engineering, Artech House, 1994
A. Mehrotra:
Cellular Radio: Analog and Digital Systems, Artech House, 1994
S.M. Redl, M.K. Weber, M.W. Oliphant:
An Introduction to GSM, Artech House, 1995
S. Sampei:
Applications of Digital Wireless Technologies to Global Wireless Communications,
Prentice-Hall Inc., 1997
R. Steele:
Mobile Radio Communications, Pentech Press, 1992
A. J. Viterbi:
CDMA: Principles of Spread Spectrum Communication, Addison-Wesley, 1995

 

IEE Electronics and Communications Journal
IEE Electronics Letter
IEE Proceedings-I Communications, Speech and Vision
IEEE Communications Magazine
IEEE Transactions on Communications
IEEE Journal on Selected Areas in Communications
IEEE Transactions on Vehicular Technology

 

N/A

 

The final grade will be computed from the following components: midsem exam (25%), final exam (50%), and assignments and projects (25%).
Closed-book examination is normally used in both midsem exam and final exam.