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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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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 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 IC..................[:=> Show Contents <=:]



download free ppt on echo cancellation in wireless communication


Posted by:
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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hi i am shraddha i want ppt on echo cancellation in wireless communicati..................[:=> Show Contents <=:]



matlab code for ici reduction in ofdm system


Posted by:
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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O”
DEFINITION:
“An echo is the repetition of a sound caused
by the reflection of sound waves”
TYPES OF ECHO:
There are two main types of echo:
 Acoustic Echo (audio conferencing speaker and its microphone)
 Hybrid Echo (On a PSTN)
 ECHO CANCELLATION
 The process used to remove echo from a voice communication in order to improve voice quality.
BENEFIT:
 Echo cancellation increases the capacity achieved through silence suppression by preventing echo from a distant place.
 Echo canceller vendors are developing new high-density solutions..................[:=> 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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ers 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 subcarriers with a group of weighting coefficients. By doing so, the ICI signals generated within a group can be ―self-cancelled‖ each other. At the receiver side, by linearly combining the received signals on these subcarriers with proposed coefficients, the residual ICI contained in the received signals can then be further reduced. The carrier-to-interference power ratio (CIR) can be increased by 15 and 30 dB when the group size is two or..................[:=> 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 kalyani.nawathe@gmail.com
I will be very glad if u s..................[:=> Show Contents <=:]



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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ain diagonals,
you will always get the same number. Let us verify that using MATLAB.
The first statement to try is
sum(A)
MATLAB replies with
ans =
34 34 34 34
When you do not specify an output variable, MATLAB uses the variable ans,
short for answer, to store the results of a calculation. You have computed a
row vector containing the sums of the columns of A. Sure enough, each of the columns has the same sum, the magic sum, 34.
How about the row sums MATLAB has a preference for working with the
columns of a matrix, so one way to get the row sums is to transpose the
matrix, compute..................[:=> 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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ecome 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 for assessing the overall quality of a network. Regardless of whether or not this is a subjective judgment, it is the key to maintaining subscriber loyalty. For this reason, the effective removal of hybrid and acoustic echo inherent within the digital cellular infrastructure is the key to maintaining and improving perceived voice quality on a call. This has led to intensive research into the area of echo canc..................[:=> Show Contents <=:]



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