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An Intercarrier Interference Cancellation Technique Based on SSC-ASIF Scheme in OFDM


Posted by: seminar class
Created at: Wednesday 04th of May 2011 04:21:19 AM
Last Edited Or Replied at :Wednesday 04th of May 2011 04:21:19 AM
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impact of ICIon the far sub-carriers, and then the adjacent sub-channelinterference filter (ASIF) method is used to cancel the impactof ICI on the adjacent sub-carriers interference. By processingso, the effect of ICI on the OFDM system is reduced aspossible, and its bandwidth efficiency has rare loss.In this paper, a new ICI cancellation scheme and itsarchitecture are presented in Section II. The symbol shiftcancellation (SSC) method and the adjacent sub-channelinterference filter (SSC-ASIF) scheme is respectively discussedin Section III and IV, and then BER performance of the OFDMsystem wit..................[:=> Show Contents <=:]



Abstract OFDM is a multi-carrier system where data bits are encoded to multiple sub


Posted by: seminar class
Created at: Monday 11th of April 2011 04:40:30 AM
Last Edited Or Replied at :Monday 11th of April 2011 04:40:30 AM
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aller the die size lesser the chip cost
• Power - Low power crucial for battery operated mobile devices
• Ease of implementation - Easy to debug and maintain
• Customizability - Should be customizable to future standards with variations in OFDM parameters
6. Algorithm survey & simulation
The simulation at algorithmic level is to determine performance of algorithms for various non-linearities and imperfections. The algorithms are tweaked and fine tuned to get the required performance. The following algorithms/parameters are verified
• Channel estimation and compensatio..................[:=> 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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the OFDM system which is overcome by the use of cyclic prefix mechanism.
2.2 different types of ICI cancellation schemes:
2.2.1Frequency Domain Equalization

Frequency domain equalizers (FEQs) have been applied extensively in multicarrier systems to enhance transmission rate by reducing transmit redundancy in the form of guard interval. The proposed equalization algorithm is able to remove intersymbol and intercarrier interference (ISI and ICI) incurred by the reduction or the absence of this redundancy by properly exploiting null subcarriers that are inherent in standardized multicar..................[:=> Show Contents <=:]



Frequency Variation of Adaptive MIMO OFDM


Posted by: seminar surveyer
Created at: Tuesday 05th of October 2010 01:28:11 AM
Last Edited Or Replied at :Tuesday 05th of October 2010 01:28:11 AM
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m which may use multiple eigenvalues. The results presented in this paper provide new insights into the BER an..................[:=> Show Contents <=:]



Orthogonal Frequency Division Multiplexing Frequency Offset Correction full report


Posted by: project topics
Created at: Sunday 25th of April 2010 11:46:50 PM
Last Edited Or Replied at :Thursday 18th of August 2011 01:30:07 PM
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ading and frequency selective fading.
Presented By:
Mr.S.KATHIRAVAN Mr. P.PONMANI
III-YR ECE III-YR CSE
MEPCO SCHLENK ENGG.COLLEGE.


Introduction:
Orthogonal frequency-division multiplexing (OFDM), also sometimes called discrete multitone modulation (DMT), is a transmission technique based upon the idea of frequency division multiplexing (FDM). In FDM, multiple signals are sent out at the same time, but on different frequencies. Most people are familiar with FDM from the use of radio and television: normally, each station is designated to broad..................[:=> Show Contents <=:]



CWDM Coarse Wavelength Division Multiplexing full report


Posted by: project report tiger
Created at: Thursday 04th of March 2010 03:56:48 AM
Last Edited Or Replied at :Tuesday 26th of October 2010 03:06:35 AM
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encies spaced in multiples of 100C.il lz. At 1550nm and 100GHz frequency spacing , the wavelength separation is approximately 0.8nm. Using a multiplexing technique called DWDM , the spacing between adjacent frequencies is considerably less. So WDM systems carrying multiple optical signals in the vicinity of 1550nm with less than 200GHz are considered DWDM. Obviously , the more wavelengths used in a WDM system . the closer they are to each other and the more dense the wavelength spectrum.
Figure (3.4) shows the channel separation in DWDM systems. Ideally the port should transmit all the light ..................[:=> Show Contents <=:]



wideband ofdm full report


Posted by: computer science technology
Created at: Friday 22nd of January 2010 07:02:26 AM
Last Edited Or Replied at :Sunday 17th of July 2011 11:56:58 PM
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nel is effectively band limited.
By adding a guard time called a cyclic prefix, the channel can be made
to behave as if the transmitted waveforms were from time minus infinity
and thus ensure orthogonality, which essentially prevents one sub
carrier from interfacing with another ( called intercarrier
interference ) . The cyclic prefix is actually a copy of the last
portion of the data symbol appended to the front of the symbol during
guard interval as shown . multipath causes tones and delayed replicas
of tones to arrive at the receiver with some delay spread. This leads..................[:=> Show Contents <=:]



WIDEBAND OFDM


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 01:13:47 PM
Last Edited Or Replied at :Thursday 01st of April 2010 04:15:58 AM
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on of the users information in each band..................[:=> Show Contents <=:]



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