Management Information Systems

Read e-book online 802.11 wireless network site surveying and installation PDF

Posted On April 19, 2018 at 1:58 am by / Comments Off on Read e-book online 802.11 wireless network site surveying and installation PDF

By Bruce Alexander

ISBN-10: 1587051648

ISBN-13: 9781587051647

802.11 instant community website Surveying and set up starts with an creation to WLAN architectures and definitions after which strikes directly to web site survey methodologies, aiding you verify and handle your site's particular wishes. The publication delves into the deploy approach for WLAN apparatus, together with the principles and rules to which WLANs needs to adhere, quite a few stumbling blocks that come up while fitting WLAN gear, and how you can attach WLAN items to the stressed out community. 802.11 instant community website Surveying and set up is all the consultant to acting a WLAN web site survey and effectively fitting your 802.11 instant network.This ebook is a part of the Networking expertise sequence from Cisco Press, which bargains networking pros necessary details for developing effective networks, knowing new applied sciences, and construction winning careers.

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Extra info for 802.11 wireless network site surveying and installation

Sample text

OFDM offers a better performance in this type of environment due to its multicarrier format. 11 specifications, modulation techniques are defined and related to data rates. Therefore, a site survey should be done using the data rates intended for use in the specific environment. Outdoor RF Issues When using WLAN systems in an outdoor environment, many other factors come into play. Most WLAN devices are not geared to mount directly outdoors. Therefore, either a weatherproof enclosure must be used, or the AP will be placed indoors (and a cable will be used to attach the antenna).

To offset this skin effect, many coax cables, designed for microwave frequencies and higher use cables of significant physical diameter, for lower loss. Many cable types appropriate for WLAN environments are available today. Table 2-5 shows some of the typical type cables that can be used and the values of attenuation (energy losses) that are associated with these cables. Table 2-5. Typical WLAN Cable Attenuation Values Cable Number LMR400 LMR600 LMR900 Information from Times Microwave 56 Size Attenuation/100 (Inches) Ft.

Many do not understand the method of how a diversity antenna system works, and this lack of understanding often leads to confusion and improper installation. The diversity antenna system includes two antennas that are connected to an RF switch, which in turn connects to the receiver (see Figure 2-15). The receiver actually switches between antennas on a regular basis as it listens for a valid signal. Part I: Understanding the Prerequisites of a Site Survey 53 54 Part I: Understanding the Prerequisites of a Site Survey Figure 2-15.

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802.11 wireless network site surveying and installation by Bruce Alexander

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