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Manmohan Sharma, Lovely Professional University Unit 2: Wireless System Architecture

Unit 2: Wireless System Architecture Notes

CONTENTS

Objectives
Introduction
2.1 Wireless System Components
2.1.1 Wireless System Networking Equipment
2.1.2 Wireless System Networking Routers
2.1.3 Computer Devices

2.1.4 Network Interface Cards (NICs)
2.1.5 Air Medium
2.1.6 Wireless Network Infrastructures
2.2 Network Architecture

2.2.1 Network Architecture (OSI)
2.3 Information Signals
2.3.1. Digital Signals
2.3.2. Analog Signals
2.4 Summary

2.5 Keywords
2.6 Review Questions
2.7 Further Readings

Objectives

After studying this unit, you will be able to:

z z Discuss the components of a wireless network
z z Discuss general wireless network architectural elements
z z Explain how information flows through a wireless network

z z Describe about information signals
Introduction

Wireless networks utilize components similar to wired networks; however, wireless networks
must convert information signals into a form suitable for transmission through the air medium.
Even though wireless networks directly contribute only to a portion of the overall network
infrastructure, attention to all network functions is necessary to counter impairments resulting
from the wireless medium. This chapter discusses concepts common to all types of wireless
networks, with emphasis on components and information signals.

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