Wireless Communication

EC3501

WIRELESS COMMUNICATION

COURSE OBJECTIVES:

i. To study and understand the concepts and design of a Cellular System.

ii. To Study And Understand Mobile Radio Propagation And Various Digital Modulation Techniques.

iii. To Understand The Concepts Of Multiple Access Techniques And Wireless Networks

UNIT-I

THE CELLULAR CONCEPT-SYSTEM DESIGN FUNDAMENTALS

Introduction-FrequencyReuse-Channel Assignment Strategies-Handoff Strategies:Prioritizing Handoffs, Practical Handoff Considerations. Interference And System Capacity: Co-Channel Interference And System Capacity-Channel Planning For Wireless Systems, Adjacent Channel Interference, Power Control For Reducing Interference, Trunking And Grade Of Service. Improving Coverage And Capacity In Cellular Systems: Cell Splitting, Sectoring.

UNIT-II

MOBILE RADIO PROPAGATION

Large Scale Path Loss: Introduction To Radio Wave Propagation - Free Space Propagation Model

– Three Basic Propagation Mechanism: Reflection – Brewster Angle- Diffraction- Scattering.Small Scale Fading And Multipath: Small Scale Multipath Propagation, Factors Influencing Small-Scale Fading, Doppler Shift, Coherence Bandwidth, Doppler Spread And Coherence Time. Types Of Small- Scale Fading: Fading Effects Due To Multipath Time Delay Spread, Fading Effects Due To Doppler Spread.

UNIT- III

MODULATION TECHNIQUES AND EQUALIZATION AND DIVERSITY

Digital Modulation – An Overview: Factors That Influence The Choice Of Digital Modulation, Linear Modulation Techniques: Minimum Shift Keying (MSK), Gaussian Minimum Shift Keying(GMSK), Spread Spectrum Modulation Techniques: Pseudo- Noise (PN) Sequences, Direct Sequence Spread Spectrum (DS-SS)- Modulation Performance In Fading And Multipath Channels- Equalization, Diversity And Channel Coding: Introduction-Fundamentals Of Equalization- Diversity Techniques: Practical Space Diversity Considerations, Polarization Diversity, Frequency Diversity, Time Diversity.

UNIT- IV

MULTIPLE ACCESS TECHNIQUES

Introduction: Introduction To Multiple Access- Frequency Division Multiple Access(FDMA)- Time Division Multiple Access(TDMA)- Spread Spectrum Multiple Access-Code Division Multiple Access(CDMA)- Space Division Multiple Access(SDMA)- Capacity Of Cellular Systems: Capacity Of Cellular CDMA, Capacity Of CDMA With Multiple Cells.

UNIT- V

WIRELESS NETWORKING

Introduction: Difference Between Wireless And Fixed Telephone Networks, The Public Switched Telephone Network(PSTN), Development Of Wireless Networks: First Generation Wireless Networks, Second Generation Wireless Networks, Third Generation Wireless Networks, Fixed Network Transmission Hierarchy, TrafficRoutingInWireless Networks: Circuit Switching, Packet Switching- Personal Communication Services/ Networks(PCS/PCNs):Packet Vs Circuit Switching For PCN, Cellular Packet- Switched Architecture- Packet Reservation Multiple Access(PRMA)- Network Databases: Distributed Database For Mobility Management- Universal Mobile Telecommunication Systems(UMTS).

45 PERIODS

PRACTICAL EXERCISES: 30 PERIODS

i. Modeling of wireless communication systems using Matlab(Two ray channel and Okumura –Hata model)

ii. Modeling and simulation of Multipath fading channel

iii. Design, analyze and test Wireless standards and evaluate the performance measurements such as BER, PER, BLER, throughput, capacity, ACLR, EVM for 4G and 5G using Matlab

iv. Modulation: Spread Spectrum – DSSS Modulation & Demodulation

v. Wireless Channel equalization: Zero-Forcing Equalizer (ZFE), MMSE Equalizer(MMSEE), Adaptive Equalizer (ADE), Decision Feedback Equalizer (DFE)

vi. Modeling and simulation of TDMA, FDMA and CDMA for wireless communication

TOTAL:75 PERIODS

COURSE OUTCOMES :

Upon successful completion of the course the student will be able to:

CO1: Understand The Concept And Design Of A Cellular System.

CO2: Understand Mobile Radio Propagation And Various Digital Modulation Techniques.

CO3: Understand The Concepts Of Multiple Access Techniques And Wireless Networks.

CO4: Characterize a wireless channel and evolve the system design specifications

CO5: Design a cellular system based on resource availability and traffic demands.

TEXT BOOK :

i. Rappaport,T.S.,-Wireless communications”, Pearson Education, Second Edition, 2010.

REFERENCES :

i. Wireless Communication –Andrea Goldsmith, Cambridge University Press, 2011

ii. Nee, R. and Ramji Prasad, ―OFDM for wireless multimedia communications, Artech House, 2000

iii. David Tse and Pramod Viswanath, ―Fundamentals of Wireless Communication, Cambridge University Press, 2005.

iv. Upena Dalal, ―Wireless Communication”, Oxford University Press, 2009.

v. Andreas.F. Molisch, ―Wireless Communications”, John Wiley – India, 2006.

vi. Wireless Communication and Networks –William Stallings ,Pearson Education, Second Edition 2002.