By Matthew Gast

ISBN-10: 1449343147

ISBN-13: 9781449343149

The subsequent frontier for instant LANs is 802.11ac, a regular that raises throughput past one gigabit in line with moment. This concise consultant presents in-depth details that can assist you plan for 802.11ac, with technical information on layout, community operations, deployment, and monitoring.

Author Matthew Gast—an specialist who led the improvement of 802.11-2012 and protection activity teams on the wireless Alliance—explains how 802.11ac won't in basic terms bring up the rate of your community, yet its ability to boot. even if you must serve extra consumers along with your present point of throughput, or serve your present consumer load with greater throughput, 802.11ac is the answer. This e-book will get you started.

know how the 802.11ac protocol works to enhance the rate and skill of a instant LAN
discover how beamforming raises velocity means through bettering hyperlink margin, and lays the root for multi-user MIMO
find out how multi-user MIMO raises capability by means of allowing an AP to ship facts to a number of consumers simultaneously
Plan while and the way to improve your community to 802.11ac via comparing purchaser units, purposes, and community connections

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Additional resources for 802.11ac: A Survival Guide

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11ac can transmit a single spatial stream in a 20 MHz channel, and the speed of that single spatial stream can be related to many higher data rates through simple mathematical operations. Each spatial stream adds proportionally to through‐ put. Wider channels also increase throughput proportionally. To get the speed of any MCS rate, take the basic 20 MHz stream, multiply by the number of spatial streams, and then multiply that result by a channel correction factor. Table 2-4 shows how the cal‐ culation works.

It contains the following fields: Rx and Tx VHT-MCS Map (16 bits each) The MCS map is a simple structure. Two bits are used to represent three options: the value 0 stands for the mandatory minimum support of MCS 0 through 7, the value of 1 adds MCS 8 for a total support of MCS 0 through 8, and the value of 2 42 | Chapter 3: The MAC adds MCS 9 for total support of MCS 0 through 9. The value of 3 is reserved. The two-bit field repeats eight times so that the transmitter can specify the maximum MCS supported for each spatial stream.

11ac is much simpler because there is only one format. 7 5. 11n: A Survival Guide. 6. 11n: A Survival Guide. 7. 11n: A Survival Guide. PHY-Level Framing | 21 Figure 2-6. 11 frame is about to start, synchronizing timers, and selecting an antenna. 11 device that is capable of OFDM operation can decode these fields. 11a to describe the data rate and length (in bytes) of the frame, which is used by receivers to calculate the time duration of the frame’s transmission. 11ac frame. 11ac devices. VHT signaling is split into two fields, the Signal A field and its companion, the Signal B field.

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802.11ac: A Survival Guide by Matthew Gast

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