By Thas J.A.
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Extra resources for 4-Gonal configurations with parameters r=q2+1 and k=q+1
11n. It is also known as 40 MHz, because it combines two channels, each with a width of 20 MHz. 11a wireless devices. 11a transmissions. 11a devices happy, because it looks like everybody is speaking the same language and can transmit at maximum possible speeds. 11n make it attractive for use with applications such as streaming video, wireless Voice over IP (VoIP), video conferencing, and others. Note For better or worse, we can thank the Wi-Fi Alliance for products in the marketplace that implement standards that have not yet been fully ratified by the IEEE.
Next comes the draft writing phase. The draft contains the scope, purpose, and outline of the standard. And it is based on the PAR. 4. Ballot stage: A project or draft is ready for a sponsor ballot when it has completed its working group development. This balloting or voting stage goes on until all comments are resolved and a favorable majority of acceptance is reached. If a favorable majority cannot be reached, the standard goes back to the draft stage. 5. Approval or ratification stage: Approval of an IEEE standard is achieved by submitting the document and supporting material to the IEEE-SA Standards Board Standards Review Committee (RevCom), which issues a recommendation to the IEEE-SA Standards Board.
Summary In this chapter on wireless communication building blocks, you learned the basic premise of waves. And because waves (radio waves) are so important, some characteristics of waves—frequency, amplitude, modulation, phase, channels, and so on—were covered. These characteristics make up an important part of the wireless communications jargon that we as wireless network administrators should be able to understand and speak. You should now understand some of the methods available that rely on tweaking the characteristics of waves to communicate some useful information signal.