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For example: 3 dB plus 3 dB office, or outdoor environment equals 6 dB. Choose the right network for your wireless The following sections help you architecture become comfortable using dBnetwork to calculate relative power levels and dBm to calculate absolute power levels. Later, you will also use dBi to calculate and compare Conduct surveys and level radio-frequency (RF) site surveys antenna gainsphysical relative site to the reference of an isotropic antenna. License-free broadband wireless wide-area networks (WWANs) provide fast deployment of lowcost, high-speed "last-mile" wireless Internet access.

These reflected echoes sometimes cause problems at the receiver by partially canceling the direct signal, effectively reducing its amplitude. The link Learn insider tips from an experienced industry throughput slows down because the receiverwireless needs more timeleader to either separate the real signal from the reflected echoes or to wait for missed packets to be retransmitted. Multipath is a Understand the principles that underlie the operation of all wireless systems significant problem for designers of microwave networks.

Figure 2-4of shows a signal in the AM radio broadcast band at aor cable companies. enable Internet service providers (ISPs) and corporate IT managers to frequency of 1000WWANs kHz (1 MHz). 11g, and proprietary-protocol networks. This vendor-neutral book covers • Table of Contents • Index Deploying License-Free Wireless Wide-Area Networks ByJack Unger Publisher: Cisco Press Pub Date: February 26, 2003 ISBN: 1-58705-069-2 Pages: 352 Best practices for planning and deployment of broadband WWANs. Learn insider tips from an experienced wireless industry leader Understand the principles that underlie the operation of all wireless systems Learn how to provide profitable and reliable wireless Internet access Select the most effective equipment and antenna systems for your area Avoid common pitfalls encountered by new wireless network operators theencounters effects of noise and network WhenMinimize this signal a tree, theinterference wavelengthon of your the signal (984 ft/300 m) is so much greater than the size of the tree that the amplitude of the signal remains almost unchanged.

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