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Dynamic Frequency Selection (DFS) is a channel allocation scheme specified for wireless LANs, commonly known as Wi-Fi. It is designed to prevent electromagnetic interference by avoiding co-channel operation with systems that predated Wi-Fi, such as military radar , satellite communication , and weather radar , and also to provide on aggregate a ...
Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.
In Fixed Channel Allocation or Fixed Channel Assignment (FCA) each cell is given a predetermined set of frequency channels. FCA requires manual frequency planning, which is an arduous task in time-division multiple access (TDMA) and frequency-division multiple access (FDMA) based systems since such systems are highly sensitive to co-channel interference from nearby cells that are reusing the ...
ADFS – Acorn's Advanced Disc filing system, successor to DFS. AdvFS – Advanced File System, designed by Digital Equipment Corporation for their Digital UNIX (now Tru64 UNIX) operating system. APFS – Apple File System is a next-generation file system for Apple products. AthFS – AtheOS File System, a 64-bit journaled filesystem now used ...
Wayfair’s CEO has an end-of-year message for employees of the online furniture company: Don’t shy away from doing more work and blending your work with your life. “Winning requires hard work.
The Chicago Cubs and Colin Rea have agreed to a $5 million, one-year contract, reuniting the right-hander with manager Craig Counsell. A person with direct knowledge of the negotiations confirmed ...
US frequency allocations chart, 2016. Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [1]
DFS: Acorn Computers Ltd: 1982 Acorn BBC Micro MOS: ADFS: Acorn Computers Ltd: 1983 Acorn Electron (later Arthur/RISC OS) FFS: Kirk McKusick: 1983 4.2BSD: FAT16: IBM, Microsoft: 1984 PC DOS 3.0, MS-DOS 3.0: MFS: Apple: 1984 System 1: Elektronika BK tape format NPO "Scientific centre" (now Sitronics) 1985 Vilnius Basic, BK monitor program HFS ...