You should implement an infrastructure network for

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You should implement an infrastructure network for all but the smallest of wireless networks. Service Set Identifier (SSID) The SSID, also called the network name , groups wireless devices together into the same logical network. All devices on the same network must use the same SSID. The original 802.11 specification operated in the 2.4 GHz range and provided up to 2 Mbps. Additional IEEE subcommittees have further refined wireless networking, resulting in the following standards: Specification Standard 802.11a 802.11b 802.11g 802.11n 802.11ac Frequency 5 GHz (U-NII) 2.4 GHz (ISM) 2.4 GHz (ISM) 2.4 GHz (ISM) or 5 GHz (U-NII) 5 GHz (U-NII) Maximum speed 54 Mbps 11 Mbps 54 Mbps 600 Mbps 1.3 Gbps Maximum distance 100 ft. 150 ft. 150 ft. 300 ft. 150 ft. Channels (non- overlapped) 23 (12) 11 (3) 11 (3) 2.4 GHz: 11 (3 or 1) 5 GHz: 23 (12 or 6) Depends on configuration Modulation technique OFDM DSSS, CCK, DQPSK, DBPSK DSSS (and others) at lower data rates; OFDM, QPSK, BPSK at higher data rates OFDM (and others, depending on implementation) OFDM Backwards N/A None 802.11b 802.11a/b/g, depending 802.11b/g/n
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compatibility on implementation 802.11n modified the previous 802.11a (5 GHz) and 802.11g (2.4GHz) standards in order to increase their potential bandwidth and transmission distance. This was done by implementing the following technologies: Technology Details Multiple-input, multiple-output (MIMO) MIMO increases bandwidth by using multiple antennas for both the transmitter and receiver. A system is described by the number of sending and receiving antennas. The 802.11n specifications allow up to four sending and four receiving antennas. The benefit of adding additional antennas declines as the number increases; going above 3x3 provides a negligible performance increase. Channel bonding Channel bonding combines two, non-overlapping 20 MHz channels into a single 40 MHz channel, resulting in slightly more than double the bandwidth. The 5 GHz range has a total of 23 channels, with 12 non-overlapping. This allows for a maximum of 6 non-overlapping bonded (combined) channels. The 2.4 GHz range has a total of 11 channels, with 3 non-overlapping. This allows for a maximum of 1 non-overlapping channel. For this reason, channel bonding is typically not practical for the 2.4 GHz range. 802.11ac increased bandwidth and communication speeds by using the following technologies: Technology Details Multi-user MIMO (MU-MIMO) MU-MIMO is an enhancement to MIMO that allows multiple users to use the same channel. In addition to adding MU-MIMO, 802.11ac doubled the number of MIMO radio streams from four to eight. Channel bonding Channel bonding is used to combine even more channels in the 5 GHz band, allowing for up to 160 MHz wide channels. Even though 160 MHz wide channels are supported, most 802.11ac networks use 80 MHz wide channels. Be aware of the following regarding wireless network implementation: Transmission speeds are affected by distance, obstructions (such as walls), and interference.
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