Wi-Fi, Fixed Wireless and Satellites

Wi-Fi, Fixed Wireless and Satellites

In the fourth module, we’ll round out your knowledge with fixed wireless: Wi-Fi, 802.11, Wi-Fi Security, Infrared, Bluetooth, Wireless Home Internet, Point-to-Point Microwave and Satellites.


Wireless Module 4

Detailed Outline

4 Fixed Wireless, Wi-Fi and Satellite

4.1 Infrared

...... 4.1.1 IrDA

...... 4.1.2 Wavelength

...... 4.1.3 Start/Stop/Parity

4.2 Bluetooth

...... 4.2.1 Data Rates and Variations

...... 4.2.2 Frequency-Hopping Spread Spectrum

...... 4.2.3 Masters and Slaves, Ticks and Slots

...... 4.2.4 Discovery and Connection

4.3 Wi-Fi: Wireless LANs

...... 4.3.1 Access Point and SSID

...... 4.3.2 Half-Duplex

...... 4.3.3 802.11 Standards

...... 4.3.4 2.4 GHz Band

...... 4.3.5 5 GHz Band

...... 4.3.6 Application

4.4 Wi-Fi Security and WPA

...... 4.4.1 Address Filtering

...... 4.4.2 Eavesdropping

...... 4.4.3 Airlink Encryption

...... 4.4.4 WEP and WPA

...... 4.4.5 WPA2 Enterprise vs. Personal

...... 4.4.6 WPA3

...... 4.4.7 Operation

4.5 Point-to-Point Microwave

...... 4.5.1 Frequency Bands

...... 4.5.2 Fading, Diversity and Error Correction

4.6 3.5 GHz Broadband Fixed Wireless Internet

...... 4.6.1 Initial Deployment

...... 4.6.2 Near-Field Interference

...... 4.6.3 Subsequent Deployments

4.7 Low-Power Wide-Area (LPWA) Radio Networks for IoT

...... 4.7.1 Technologies Deployed by Non-Mobile Network Operators

...... 4.7.2 Technologies Deployed by Mobile Network Operators

...... 4.7.3 The 5G Steamroller

4.8 Satellite Communications

...... 4.8.1 Introduction

...... 4.8.2 Geosynchronous Earth Orbit

...... 4.8.3 Path Delay

...... 4.8.4 Medium Earth Orbit

...... 4.8.5 Low Earth Orbit

...... 4.8.6 Starlink