trapeziums area perimeter scalene 001

Area Filling

Area Filling
...
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Low Rate Wireless Personal Area Networks

Low Rate Wireless Personal Area Networks
... Describe a wireless personal area network (WPAN) • List the different WPAN standards and their applications • Explain how IrDA, Bluetooth, and ZigBee work • Describe the security features of low- rate ... ZigBee work • Describe the security features of low- rate WPAN technology What is a WPAN? • Wireless personal area network (WPAN) – Group of technologies that are designed for shortrange communications ... Bluetooth Special Interest Group (SIG) • Defines small-form-factor, low- cost wireless radio communications • IEEE licensed this wireless technology – To adapt and copy a portion of the specification...
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High Rate Wireless Personal Area Networks

High Rate Wireless Personal Area Networks
... the same area Wireless# Guide to Wireless Communications 14 802.15.3 Network Topology (continued) Wireless# Guide to Wireless Communications 15 802.15.3 Network Topology (continued) Wireless# ... frequency bands Wireless# Guide to Wireless Communications 30 How UWB Works (continued) Wireless# Guide to Wireless Communications 31 How UWB Works (continued) Wireless# Guide to Wireless Communications ... multimedia projectors and sound systems Wireless# Guide to Wireless Communications 802.15.3 High Rate WPANs (continued) • Application characteristics – – – – – – Require high throughput Transceiver should...
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Wireless Local Area Networks

Wireless Local Area Networks
... freely roam between APs 17 Summary • The wireless technology that attracts the most attention today – Radio frequency (RF) wireless local area networks (WLANs) • Wireless NIC performs same functions ... of wireless clients and an AP • Extended Service Set (ESS) – Two or more BSS wireless networks installed in same area – Provides users with uninterrupted mobile access to the network • All wireless ... WLAN Applications • Wireless networks are increasing in popularity • Installing cabling is inconvenient and very expensive – Wireless networks solve this problem • With a wireless network – Multiple...
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Wireless Metropolitan Area Networks

Wireless Metropolitan Area Networks
... a WMAN? • Wireless metropolitan area networks (WMANs) – Provide wireless connectivity across a substantial geographical area such as a large city • WMANs primary goals – Extend wired networks ... Objectives • Explain why wireless metropolitan area networks (WMANs) are needed • Describe the components and modes of operation of a ... Security Availability of the technology 17 IEEE 802.16 (WiMAX) • Standard for wireless broadband metropolitan area networks • 802.16 supports enhancements and extensions to the MAC protocols –...
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Describe wireless wide area networks (WWANs) and how they are used

Describe wireless wide area networks (WWANs) and how they are used
... Objectives • Describe wireless wide area networks (WWANs) and how they are used Describe the applications that can be used on a digital cellular telephone • Explain how cellular telephony ... Satellites are used to acquire scientific data and perform research in space – Satellites look at Earth from space – Satellites include devices that are simply reflectors 26 Satellite Broadband Wireless ... network and the wired telephone world – Controls all transmitters and base stations How Cellular Telephony Works (continued) How Cellular Telephony Works (continued) • Keys to cellular telephone networks...
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