Wireless Networks

Course Title: Wireless Networks

Course No: CSIT.424.3

Nature of the Course: Theory + Lab

Semester: 8

Full Marks: 60 + 20 + 20

Pass Marks: 24 + 10 + 10

Credit Hours: 3

Course Description

The course addresses the fundamentals of wireless communications and provides an overview of existing and emerging wireless communications networks. It covers radio propagation and fading models, fundamentals of cellular communications, multiple access technologies, and various wireless networks, including past and future generation networks. Simulation of wireless systems under different channel environments will be integral part of this course.

Course Objectives

Characterize fading multi-path radio channels. Distinguish the difference between large-scale fading and small-scale fading. Describe and explain the effects of fading multi-path channels. Provide possible solutions to the problem of signal fading. Apply propagation models and design basic radio communication links. Plan and analyse simple wireless networks in terms of coverage and capacity. Understand about multiple access techniques. Describe and explain mobility management strategies. Describe and understand about concept of mobile IP, protocols and routing in ad-hoc network.

Course Contents

1. Overview of Wireless Communications and Systems

2 hrs

1.1. Introduction and Challenges

Introduction to Wireless Communications

Challenges in wireless communication networks

1.2. Cellular Generations

Cellular systems from 1G to 3G

Wireless 4G systems

2. Wireless Channel Characterization

7 hrs

2.1. Multipath and Small Scale Fading

Multipath Propagation Environment

Fading Effects due to Multipath Time Delay Spread

Fading Effects due to Doppler Spread

Channel Models

2.2. Fading and Path-loss Models

Rayleigh Fading Distribution

Ricean Fading Distribution

Free-space Path loss Model

Propagation Over Reflecting Surface (smoothing plane)

Long Distance Path loss with Shadowing

Okumura-Hara Path Loss Model

3. Band Pass Transmission Technique for Mobile Radio

9 hrs

3.1. Digital Communication and Pulse Shaping

An overview of Digital Communication

Nyquist Pulse Shaping

Raised Cosine Roll-off Filter

3.2. Modulation Techniques Overview

Analog and Digital Modulation - An overview

Criteria of Choosing Modulation Schemes

Geometric Representation of Modulated signal

Power Spectral Density

Probability of Error

3.3. Digital Modulation Techniques

Digital Linear Modulation (BPSK, DPSK, QPSK)

Minimum Shift Keying (MSK)

Gaussian Minimum Shift Keying (GMSK)

M-array (MPSK, MFSK, QAM and OFDM) Modulation and Demodulation

4. Equalization, Diversity and Channel Coding

4 hrs

4.1. Equalization

Basics of equalization

Equalization in communications receivers

Linear equalizers

Non-linear equalization

Decision feedback and maximum likelihood sequence estimation equalizations

Adaptive equalization algorithms

Zero forcing, least mean square, recursive least squares algorithms

Fractionally spaced equalizers

4.2. Diversity Techniques

Diversity methods

Advantages of diversity

Basic definitions

Space diversity

Reception methods (selection, feedback, maximum ratio and equal gain diversity)

Polarization, frequency and time diversity

RAKE receivers and interleaving

5. Fundamental of Cellular Network

6 hrs

5.1. Cellular Concepts and Frequency Planning

Cellular Concept and Operational Channel

Frequency Reuse and Channel Assignment Strategies

5.2. Interference, Capacity and Coverage

Interference and system capacity

Co-channel and adjacent channel interference

Power control measures

Grade of service, definition, standards

Cell splitting

Sectoring

Repeaters

Microcells

6. Multiple Access in Wireless Network

5 hrs

6.1. Classic Multiple Access Techniques

Frequency Division Multiple Access (FDMA) Principle and Application

Time Division Multiple Access (TDMA), principles and applications

6.2. Spread Spectrum and Advanced Access

Spread Spectrum Multiple Access

Frequency Hopped Multiple Access

Code Division Multiple Access

Hybrid spread spectrum multiple access techniques

Space Division Multiple Access

Standards for Wireless Local Area Networks

7. Mobility Management in Wireless Network

5 hrs

7.1. Mobility Management Basics

Introduction to Mobility Management

Call Admission Control (CAC)

7.2. Handoff and Location Management

Handoff Strategies

Handoff Types

Location Management For Cellular Network

Location Management For PCS Network

Traffic Calculation

8. Wireless / Wireline Internetworking

5 hrs

8.1. Mobile IP and IPv6

Introduction to Internetworking for Wireless Networks

Concept of mobile IP, Architecture and Operation

Tunnelling in mobile IP

Mobility in IPv6

Transmission Control Protocol (TCP)

8.2. Wireless Protocols and Ad-hoc Networks

Wireless Application Protocol (WAP)

Wireless Markup Language (WML)

Mobile AD HOC Network (MANET)

AD HOC Routing Protocols

Laboratory Works

Student should write programs and prepare lab sheet for most of the units in the syllabus. Majorly, students should practice design and implementation of wireless network. Students are advised to implement the modulator de-modulator, frequency planning, channel assignment as well as routing algorithms used in wireless network. Students are advised to use MATLAB simulator. Student are advised to visit the mobile service operators, network service providers, internet service providers and prepare the report.

1.Design and Implementation
2.Simulation
3.Field Visit Report

Text Books

1.Jon W. Mark and Weihua Zhuang, Wireless Communication and Networking, Prentice Hall

Reference Books

1.K. Feher, Wireless Digital Communications, Prentice Hall
2.T. Rappaport, Wireless Communications, Prentice Hall
3.J. Schiller, Mobile Communications, Pearson

Notes:

This syllabus follows the official CSIT curriculum of Far Western University. In case of any doubt or revision, the university's published syllabus shall be considered authoritative. https://cdc.fwu.edu.np/faculties.html

Wireless Networking

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Wireless Networks

Course Description

Course Objectives

Course Contents

Laboratory Works

Text Books

Reference Books

Notes: