This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Link margin" – news · newspapers · books · scholar · JSTOR(August 2009) (Learn how and when to remove this message)
In a wireless communication system, the link margin (LKM), measured in dB, is the difference between the minimum expected power received at the receiver's end, and the receiver's sensitivity (i.e., the received power at which the receiver will stop working). A 15 dB link margin means that the system could tolerate an additional 15 dB of attenuation between the transmitter and the receiver, and it would still just barely work.
It is typical to design a system with at least a few dB of link margin, to allow for attenuation that is not modeled elsewhere. For example, a satellite communications system operating in the tens of gigahertz might require additional link margin (vs. the link budget assuming lossless propagation), in order to ensure that it still works with the extra losses due to rain fade or other external factors.
A system with a negative link margin cannot transfer data, so one or more of the following are needed: more transmitter power; more antenna gain at the receiver or transmitter; less propagation loss (e.g., better antenna locations and/or shorter paths); lower receiver noise figure; improved error correction coding (FEC); reduced interference; or a lower data rate.
This article related to telecommunications is a stub. You can help Wikipedia by expanding it.
In a wireless communication system, the linkmargin (LKM), measured in dB, is the difference between the minimum expected power received at the receiver's...
Margin Call is a 2011 American drama film written and directed by J. C. Chandor in his feature directorial debut. The principal story takes place over...
Look up margin in Wiktionary, the free dictionary. Margin may refer to: Margin (typography), the white space that surrounds the content of a page Continental...
the link will be useful for sending data. The amount by which the received power exceeds receiver sensitivity is called the linkmargin. A link budget...
Water Margin is one of the earliest Chinese novels written in vernacular Mandarin. It is one of the Four Classic Chinese Novels and is attributed to Shi...
Margin of safety may refer to: Margin of safety (financial) in a financial context Margin of safety (medicine) for pharmaceutical drugs Margin of safety...
In electronic amplifiers, the phase margin (PM) is the difference between the phase lag φ (< 0) and -180°, for an amplifier's output signal (relative to...
A continental margin is the outer edge of continental crust abutting oceanic crust under coastal waters. It is one of the three major zones of the ocean...
example a system like globalstar operates at 25-35 dB Fade margin. Multipath propagation Link Budget This article incorporates public domain material from...
telecommunication, the term RF power margin has the following meanings: The amount of transmitter power above that which is computed by the link designer as the minimum...
the Margins Award, an American literary award This disambiguation page lists articles associated with the title In the Margins. If an internal link led...
articles associated with the title Margination. If an internal link led you here, you may wish to change the link to point directly to the intended article...
A passive margin is the transition between oceanic and continental lithosphere that is not an active plate margin. A passive margin forms by sedimentation...
ISBN 9781260122404. OCLC 1076268769.{{cite book}}: CS1 maint: location missing publisher (link) Hall, John E (2016). Guyton and Hall textbook of medical physiology (13th ed...
On the Margin was a British satirical comedy sketch show written and performed by Alan Bennett and a regular cast including John Sergeant, Virginia Stride...
Complete circumferential peripheral and deep margin assessment (CCPDMA) is the preferred method for the removal of certain cancers, especially skin cancers...
In electrical engineering, noise margin is the maximum voltage amplitude of extraneous signal that can be algebraically added to the noise-free worst-case...
Earthquakes will occur to a depth of 670 km (416 mi) along the Wadati-Benioff margin.[citation needed] Both compressional and extensional forces act along convergent...
In an optical communications link, the optical power margin is the difference between the optical power that is launched by a given transmitter into the...
endings is very variable, as is whether second order veins end at the margin, or link back to other veins. There are many elaborate variations on the patterns...
passive margins (VPM) and non-volcanic passive margins are the two forms of transitional crust that lie beneath passive continental margins that occur...
wash margin or wash fringe (German: Spülsaum) is an area of the shore on which material is deposited or washed up. It often runs along the margin of a...
Wu Kongming, Chinese politician Kong Ming (Water Margin), a fictional character in the Water Margin 孔明 (disambiguation) This disambiguation page lists...
45th Canadian federal election Notes 1 In cases when linked poll details distinguish between the margin of error associated with the total sample of respondents...
surface resides the spinoglenoid fossa which is situated by the medial margin of the glenoid. The spinoglenoid fossa houses the suprascpular canal which...
graphical design technique of the Bode plots to show the gain margin and phase margin required to maintain stability under variations in circuit characteristics...
to oceanic crust and spreading centers; many of them are on continental margins. The best example is the San Andreas Fault on the Pacific coast of the...
Global Information
