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Intercarrier Interference Compression in OFDM Communication Systems by Using Correlat


Posted by: seminar class
Created at: Thursday 24th of February 2011 11:08:28 PM
Last Edited Or Replied at :Thursday 24th of February 2011 11:08:28 PM
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es. The purpose of pulse shaping is to reduce the side lobes. If we can reduce the side lobes significantly we then the ICI power will also be reduced.
2.2.4 ICI Self Cancellation
ICI self –cancellation is a scheme that was introduced by Yuping Zhao and Sven-Gustav Haggman in 2001 to combat and suppress ICI in the OFDM. The ICI self-cancellation scheme is a technique in which redundant data is transmitted onto adjacent sub-carriers such that the ICI between adjacent sub-carriers cancels out at the receiver. The main idea is one data symbol is modulated onto a group of adjacent subc..................[:=> Show Contents <=:]



download free ppt on echo cancellation in wireless communication


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Created at: Thursday 10th of January 2013 11:16:13 AM
Last Edited Or Replied at :Friday 11th of January 2013 12:14:42 AM
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matlab code for ici reduction in ofdm system


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Created at: Sunday 09th of December 2012 05:18:48 AM
Last Edited Or Replied at :Wednesday 26th of June 2013 12:20:14 AM
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Echo Canceller Software


Posted by: seminar class
Created at: Friday 11th of March 2011 11:19:08 PM
Last Edited Or Replied at :Thursday 08th of March 2012 11:29:48 PM
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ective of echo canceller is to improve clarity of audio/speech signal.
WHY ECHO CANCELLER SOFTWARE ?
Since now it has been implemented using hardware and is costly. So to avoid that a software based implementation is needed.
MARKET VALUE
The echo canceller market requirements have evolved dramatically over years. The most important are:
 Voice quality
 Cost
 Echo path coverage
 Processing Load
 ALGORITHMS
 TELETALEEM
 TOOLS
 C#
 DIRECTX
CONCLUSION:
 Hardware design and performance issues aside, the ..................[:=> Show Contents <=:]



Intercarrier Interference Compression in OFDM Communication Systems by Using Correlat


Posted by: seminar class
Created at: Thursday 24th of February 2011 11:08:28 PM
Last Edited Or Replied at :Thursday 24th of February 2011 11:08:28 PM
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erference among the carriers because at the peak of the every carrier, there exists a spectral null. That is at that point the component of all other carrier is zero. Hence the individual carrier is easily separated. When there is a frequency offset the Orthogonality is lost because now the spectral does not coincide with the peak of the individual carriers. So some power of the side lobes exists at the center of the individual carriers which is called ICI power. The ICI power will go on increasing as the frequency offset increases. The purpose of pulse shaping is to reduce the side lobes. If ..................[:=> Show Contents <=:]



echo cancellation in wireless communicetion


Posted by: kalyani nawathe
Created at: Sunday 18th of July 2010 03:11:55 AM
Last Edited Or Replied at :Thursday 08th of March 2012 11:29:41 PM
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I am Kalyani Nawathe. I want full seminars report on Echo Cancellation in Wireless Communication.

My email ID is [email protected]
I will be very glad if u send me the full seminars report of the topic Airborne Internate.

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echo cancellation using matlab


Posted by: computer science topics
Created at: Sunday 27th of June 2010 08:50:19 PM
Last Edited Or Replied at :Thursday 08th of March 2012 11:29:59 PM
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erphone or hands-free mode Dedicated standalone conference phones Installed room systems which use ceiling speakers and microphones on the table Physical coupling (vibrations of the loudspeaker transfer to the microphone via the handset casing) In most of these cases, direct sound from the loudspeaker (not the person at the far end, otherwise referred to as the Talker) enters the microphone almost unaltered. This is called direct acoustic path echo. The difficulties in cancelling acoustic echo stem from the alteration of the original sound by the ambient space. This colours the sound that re..................[:=> Show Contents <=:]



echo cancellation full report


Posted by: project reporter
Created at: Sunday 31st of January 2010 12:42:36 PM
Last Edited Or Replied at :Friday 16th of November 2012 01:37:55 AM
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ess carriers increases, digital wireless subscribers are becoming ever more critical of the service and voice quality they receive from network providers. A key technology to provide near-wireline voice quality across a wireless carrier's network is echo cancellation.

Introduction
People have been using phones as a means of distant voice communication for more than a century now.Using phones has become sort of a usual thing. We use the phones almost every day and just about every where At home,at work,outside,in our cars and so on.
Subscribers use speech quality as the benchmark ..................[:=> Show Contents <=:]



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