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en>Fuddle: Disambiguating links to Whitney (help needed) using DisamAssist.

2015-01-08T18:50:16Z

Disambiguating links to Whitney (help needed) using DisamAssist.

← Older revision		Revision as of 20:50, 8 January 2015
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	In [[signal processing]], a '''root-raised-cosine filter''' ('''RRC'''), sometimes known as '''square-root-raised-cosine filter''' ('''SRRC'''), is frequently used as the transmit and receive filter in a [[digital communication]] system to perform [[Matched filter\|matched filtering]]. This helps in minimizing [[intersymbol interference]] (ISI). The combined response of two such filters is that of the [[raised-cosine filter]]. It obtains its name from the fact that its frequency response, <math>H_{rrc}(f)</math>, is the square root of the frequency response of the raised-cosine filter, <math>H_{rc}(f)</math>:

	~~:<math>H_{rc}(f) = H_{rrc}(f)\cdot H_{rrc}(f)</math>~~
	~~or:~~

	~~:<math>\|H_{rrc}(f)\| = \sqrt{\|H_{rc}(f)\|}</math>~~		It depends on the quality of the Wordpress theme but even if it's not a professional one you will be able to average 50-60$ EACH link. It is used by around 25% of all new websites, and there are more than 27 thousand plugins currently available. A pinch of tablet centric strategy can get your Word - Press site miles ahead of your competitors, so here are few strategies that will give your Wordpress websites and blogs an edge over your competitors:. If you adored this article and you would such as to get more info pertaining to [http://9ja.in/wordpress_dropbox_backup_908436 backup plugin] kindly see the webpage. If you're using Wordpress and want to make your blog a "dofollow" blog, meaning that links from your blog pass on the benefits of Google pagerank, you can install one of the many dofollow plugins available. If you are happy with your new look then click "Activate 'New Theme'" in the top right corner. <br><br>You just download ready made templates to a separate directory and then choose a favorite one in the admin panel. When you write a new post, you'll see a small bar that goes across the text input area. Which is perfect for building a mobile site for business use. They provide many such popular products which you can buy for your baby. Now a days it has since evolved into a fully capable CMS platform which make it, the best platform in the world for performing online business. <br><br>But before choosing any one of these, let's compare between the two. Word - Press has different exciting features including a plug-in architecture with a templating system. We can active Akismet from wp-admin > Plugins > Installed Plugins. The animation can be quite subtle these as snow falling gently or some twinkling start in the track record which are essentially not distracting but as an alternative gives some viewing enjoyment for the visitor of the internet site. If you have any questions on starting a Word - Press food blog or any blog for that matter, please post them below and I will try to answer them. <br><br>Word - Press installation is very easy and hassle free. But the Joomla was created as the CMS over years of hard work. Next you'll go by way of to your simple Word - Press site. A whole lot worse, your site will likely be useless as well as your merchandise won't sell if no one has the endurance to wait for the web pages to load. The popularity of Word - Press has increased the demand for Word - Press themes and these themes sells like hot cake on the internet. <br><br>Millions of individuals and organizations are now successfully using this tool throughout the world. When you sign up with Wordpress, you gain access to several different templates and plug-in that allow you to customize your blog so that it fits in with your business website design seamlessly. You can select color of your choice, graphics of your favorite, skins, photos, pages, etc. You should stay away from plugins that are full of flaws and bugs. Article Source: Hostgator discount coupons for your Wordpress site here.

	~~== Why~~ is ~~it required ==~~
	~~To have minimum ISI ([[Intersymbol interference]])~~, ~~the overall response~~ of ~~transmit filter~~, ~~channel response~~ and ~~receive filter has~~ to ~~satisfy~~ [~~[Nyquist ISI criterion]]~~. ~~[[Raised-cosine filter]~~] is the ~~most popular filter response satisfying this criterion~~. ~~Half of this filtering is done~~ on the ~~transmit side and half~~ of ~~this is done on~~ the ~~receive side~~. On the ~~receive side,~~ the ~~channel response~~, ~~if it can be accurately estimated, can also be taken into account so~~ that the ~~overall response~~ is ~~[[Raised-cosine filter]].~~

	~~== Mathematical Description ==~~
	~~[[File:Srrc.png\|thumb\|500px\|The impulse response of~~ a ~~root-raised cosine filter~~ for ~~three values of ''β'': 1~~.~~0 (blue), 0~~.~~5 (red) and 0 (green).]]~~

	~~The RRC filter is characterised by two values; ''β''~~, the ~~''[[roll-off]] factor'', and ''T~~<~~sub~~>s<~~/sub~~>'', the ~~reciprocal of the symbol~~-~~rate~~.

	The ~~[[impulse response]] of such a filter~~ can be ~~given~~ as:

	~~:<math>h(t) = \begin{cases}~~
	~~1-\beta+4\dfrac{\beta}{\pi},~~
	~~& t = 0 \\~~

	~~\dfrac{\beta}{\sqrt{2}}~~
	~~\left[~~
	~~\left(1+\dfrac{2}{\pi}\right)\sin\left(\dfrac{\pi}{4\beta}\right) +~~
	~~\left(1-\dfrac{2}{\pi}\right)\cos\left(\dfrac{\pi}{4\beta}\right)~~
	~~\right],~~
	~~& t = \pm \dfrac{T_s}{4\beta} \\~~

	\dfrac{\sin\left[\pi \dfrac{t}{T_s}\left(1-\beta\right)\right] + 4\beta\dfrac{t}{T_s}\cos\left[\pi\dfrac{t}{T_s}\left(1+\beta\right)\right]}{\pi \dfrac{t}{T_s}\left[1-\left(4\beta\dfrac{t}{T_s} \right)^2 \right]},
	~~& \mbox{otherwise}~~
	~~\end{cases}</math>,~~
	~~though there~~ are ~~other forms~~ as ~~well~~.

	~~Unlike the raised~~-~~cosine filter~~, ~~the impulse response is not zero at the intervals of ±''T~~<~~sub~~>s<~~/sub~~>''. ~~However,~~ the ~~combined transmit and receive filters form a raised-cosine filter which does have zero at~~ the ~~intervals~~ of ~~±''T<sub>s</sub>~~''. ~~Only in the case~~ of ~~''β''=0 does~~ the ~~root raised~~-~~cosine have zeros at ±''T~~<~~sub~~>s<~~/sub~~>''.

	~~== References ==~~

	* S. Daumont, R. ~~Basel, Y. Lout~~, ~~"Root-Raised Cosine filter influences on PAPR distribution~~ of ~~single carrier signals"~~, ~~ISCCSP 2008~~, ~~Malta~~, ~~12-14 March 2008.~~
	* Proakis, J. ~~(1995)~~. ~~''Digital Communications'' (3rd ed.). McGraw-Hill Inc. ISBN 0-07-113814-5~~.
	~~[[Category:Linear filters]]~~
	~~[[Category:Telecommunication theory]]~~

en>Bgwhite: Fix section heading per WP:MOSHEAD, typo(s) fixed: so called → so-called using AWB (9838)

2014-01-10T22:29:47Z

Fix section heading per WP:MOSHEAD, typo(s) fixed: so called → so-called using AWB (9838)

← Older revision		Revision as of 00:29, 11 January 2014
Line 1:		Line 1:
			In [[signal processing]], a '''root-raised-cosine filter''' ('''RRC'''), sometimes known as '''square-root-raised-cosine filter''' ('''SRRC'''), is frequently used as the transmit and receive filter in a [[digital communication]] system to perform [[Matched filter\|matched filtering]]. This helps in minimizing [[intersymbol interference]] (ISI). The combined response of two such filters is that of the [[raised-cosine filter]]. It obtains its name from the fact that its frequency response, <math>H_{rrc}(f)</math>, is the square root of the frequency response of the raised-cosine filter, <math>H_{rc}(f)</math>:

			:<math>H_{rc}(f) = H_{rrc}(f)\cdot H_{rrc}(f)</math>
			or:

	~~If you are looking for a specific plugin~~, ~~then you can just search for~~ the ~~name~~ of ~~the plugin~~. ~~This one~~ is ~~one of~~ the most ~~beneficial features~~ of ~~Word - Press as~~ this ~~feature allows users to define~~ the ~~user roles. Step-4 Testing: It~~ is the ~~foremost important of your Plugin development process~~. ~~If you need a special plugin for your website~~ , ~~there are thousands of plugins that~~ can be ~~used to meet those needs. By using this method one~~ can ~~see whether the theme has~~ the ~~potential to become popular or not and~~ is ~~their any scope~~ of ~~improvement in the theme. <br><br>Any business enterprise that is certainly worth its name should really shell out~~ a ~~good deal in making sure that they have the most effective website that provides related info to its prospect. But as expected the level~~ of ~~support you get with them can be hit or miss based on the developer~~'~~s free time~~ and ~~desire~~. ~~Well Managed Administration~~ The ~~Word - Press can easily absorb the high numbers of traffic~~ by ~~controlling~~ the ~~server load to make sure that the site works properly. By purchasing Word~~ - ~~Press weblogs you can acquire your very own domain title and have total command of your web site. By using Word - Press, you can develop very rich~~, ~~user-friendly~~ and ~~full-functional website.~~ <br><br>The ~~least difficult and very best way to do this is by acquiring~~ a ~~Word - Press site. s cutthroat competition prevailing in the online space won. If you liked this article and also you would like to~~ be given ~~more info with regards to~~ [~~http://zpib.com/backup_plugin_555290 wordpress dropbox backup~~] ~~please visit the web page. If Gandhi was empowered with a blogging system~~, ~~every event in his life would have been minutely documented so that it could be recounted to the future generations. Thousands of plugins are available in Word~~ - ~~Press plugin's library which makes the task of selecting~~ right ~~set of plugins for your website a very tedious task~~. ~~" Thus working with a Word~~ - ~~Press powered web application~~, ~~making any changes in~~ the ~~website design or website content~~ is ~~really easy and self explanatory.~~ <br><br>~~Whether your Word - Press themes is premium or not~~, ~~but nowadays every theme is designed with widget~~-~~ready. I~~ have ~~compiled a few tips on how you can start a food blog and hopefully~~ the ~~following information and tips can help you to get started on your food blogging creative journey~~. ~~Enterprise, when they plan to hire Word - Press developer resources still PHP, My - SQL and watch with great expertise~~ in ~~codebase. It~~'~~s now become a great place to sell it thanks to Woo~~ - ~~Commerce. Make sure you~~ have ~~the latest versions of all your plugins are updated.~~ <br><br>~~As a open source platform Wordpress offers distinctive ready to use themes for free along with custom theme support and easy customization~~. ~~Sanjeev Chuadhary is an expert writer who shares his knowledge about web development through their published articles and other resource~~. ~~Just download it from the website and start using the same~~. ~~This is because~~ of ~~the customization that works as a keystone for a SEO friendly blogging portal website~~. ~~As with a terminology~~, ~~there are many methods to understand how to use the terminology~~.		:<math>\|H_{rrc}(f)\| = \sqrt{\|H_{rc}(f)\|}</math>

			== Why is it required ==
			To have minimum ISI ([[Intersymbol interference]]), the overall response of transmit filter, channel response and receive filter has to satisfy [[Nyquist ISI criterion]]. [[Raised-cosine filter]] is the most popular filter response satisfying this criterion. Half of this filtering is done on the transmit side and half of this is done on the receive side. On the receive side, the channel response, if it can be accurately estimated, can also be taken into account so that the overall response is [[Raised-cosine filter]].

			== Mathematical Description ==
			[[File:Srrc.png\|thumb\|500px\|The impulse response of a root-raised cosine filter for three values of ''β'': 1.0 (blue), 0.5 (red) and 0 (green).]]

			The RRC filter is characterised by two values; ''β'', the ''[[roll-off]] factor'', and ''T<sub>s</sub>'', the reciprocal of the symbol-rate.

			The [[impulse response]] of such a filter can be given as:

			:<math>h(t) = \begin{cases}
			1-\beta+4\dfrac{\beta}{\pi},
			& t = 0 \\

			\dfrac{\beta}{\sqrt{2}}
			\left[
			\left(1+\dfrac{2}{\pi}\right)\sin\left(\dfrac{\pi}{4\beta}\right) +
			\left(1-\dfrac{2}{\pi}\right)\cos\left(\dfrac{\pi}{4\beta}\right)
			\right],
			& t = \pm \dfrac{T_s}{4\beta} \\

			\dfrac{\sin\left[\pi \dfrac{t}{T_s}\left(1-\beta\right)\right] + 4\beta\dfrac{t}{T_s}\cos\left[\pi\dfrac{t}{T_s}\left(1+\beta\right)\right]}{\pi \dfrac{t}{T_s}\left[1-\left(4\beta\dfrac{t}{T_s} \right)^2 \right]},
			& \mbox{otherwise}
			\end{cases}</math>,
			though there are other forms as well.

			Unlike the raised-cosine filter, the impulse response is not zero at the intervals of ±''T<sub>s</sub>''. However, the combined transmit and receive filters form a raised-cosine filter which does have zero at the intervals of ±''T<sub>s</sub>''. Only in the case of ''β''=0 does the root raised-cosine have zeros at ±''T<sub>s</sub>''.

			== References ==

			* S. Daumont, R. Basel, Y. Lout, "Root-Raised Cosine filter influences on PAPR distribution of single carrier signals", ISCCSP 2008, Malta, 12-14 March 2008.
			* Proakis, J. (1995). ''Digital Communications'' (3rd ed.). McGraw-Hill Inc. ISBN 0-07-113814-5.
			[[Category:Linear filters]]
			[[Category:Telecommunication theory]]

en>AnomieBOT: Dating maintenance tags: {{Cn}}

2012-05-20T05:00:01Z

Dating maintenance tags: {{Cn}}

New page

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