The following figure shows the formats of 802.11n and 802.11ac frames. Figure 1-10 Formats of 802.11n and 802.11ac frames The short training field (STF), long training field (LTF), and signal field (SIG) are used to ensure compatibility with 802.11a/b/g/n. The letter L indicates ...
Figure 1-6 Positions of RUs in the 20 MHz frequency bandwidth A large number of RUs indicates higher efficiency of multi-user processing and higher throughput. The following figure shows the simulation benefits. Figure 1-7 Multi-user throughput simulation in OFDMA and OFDM modes DL/UL MU-MIMO...
The choice of which ADC technology to employ should always be based on application requirements. If you are measuring primarily static and quasi-static (slow) signals, you obviously don’t need a super-high-speed system, but you probably want one with as much amplitude axis resolution as possi...
Such beacons are activated by persons, aircrafts or vessels in distress. AR-DV10 is the world’s first hand-held radio receiver to feature this unique function. It allows the AR-DV10 users to receive both the beacon’s analog 121.5MHz homing signal, as well as the digital 406MHz signal ...
This site shows you how to make brilliant looking DivX video (from TV, DVB, DV, DVD etc) for archiving purposesORhow to reduce file size to produce good-looking yet small DivX footage. If you are dealing with DivX, this site features a few video statistics and experiments, that may be...
a unique identifier called a MAC (Media Access Control) address. When one device wants to send data to another, it first checks if the network is free to transmit. If it is, the device sends the data in packets, which are then received by the destination device based on its MAC ...
Figure 3 shows a differential implementation of the output transistors and LC filter in a Class D amplifier. This H-bridge has two half-bridge switching circuits that supply pulses of opposite polarity to the filter, which comprises two inductors, two capacitors, and the speaker. Each half-...
Your Internet speeds depend on several factors, including the plan you choose and the capability of your devices. As such, using an Ethernet cable may be faster than WiFi in some cases, but not always. However, there are other benefits of Ethernet cables worth considering. For one, using ...
This map shows the sky around 40 minutes after sunset but you can start as early as 30 minutes especially if you’re using binoculars. Source: Stellarium The Moon reaches New Moon phase on Saturday, April 18 during the early afternoon for North and South America. By sunset Sunday, the ...
Figure 1-6 Positions of RUs in the 20 MHz frequency bandwidth A large number of RUs indicates higher efficiency of multi-user processing and higher throughput. The following figure shows the simulation benefits. Figure 1-7 Multi-user throughput simulation in OFDMA and OFDM modes DL/UL MU-MIMO...