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## An Intercarrier Interference Cancellation Technique Based on SSC-ASIF Scheme in OFDMPosted 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 | An Intercarrier Interference Cancellation Technique Based on SSCASIF Scheme in OFDM ,
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epted for the next generation wirelesscommunication systems, such as B3G, Wimax and so on.Although
multi-path propagation and frequency-selectivefading exist in radio channels, OFDM is very robust to
radiochannel impairments. The receiver design is also simplifieddue to less complex equalization,
and OFDM systems havehigh spectral efficiency due to overlapping sub-carrier spectra.However, one of
the major disadvantages of such a multicarriermodulated system is the sensitivity of its performance
tofrequency or phase offsets. Frequency offsets can result from aDoppler shift due to a mobile envir..................[:=> Show Contents <=:] | |||

## Abstract OFDM is a multi-carrier system where data bits are encoded to multiple subPosted 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 | abstract for ofdm,
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ges over single carrier system like better multi-path effect immunity, simpler channel equalization
and relaxed timing acquisition constraints. But it is more susceptible to local frequency offset and
radio front-end non-linearities. The frequencies used in OFDM system are orthogonal. Neighboring frequencies with overlapping spectrum can therefore be used. This property is shown in the figure where f1, f2 and f3 orthogonal. This results in efficient usage of BW. The OFDM is therefore able to provide higher data rate for the same BW. 2. OFDM Transc.................. [:=> Show Contents <=:] | |||

## Intercarrier Interference Compression in OFDM Communication Systems by Using CorrelatPosted 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 | Intercarrier Interference Compression in OFDM Communication Systems by Using Correlat ,
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gradation of network performance. A wireless network should be designed to minimize these type of
adverse effect. One of the remedy of the above problem is OFDM which is most efficient among other remedies. The principles of orthogonal frequency division multiplexing(OFDM) modulation have been in existence for several decades. However, in recent years these techniques have quickly moved out of text books and research laboratories and into practice in modern communications systems. Frequency division multiplexing(FDM) extends the concept of single carrier modulation by using mu.................. [:=> Show Contents <=:] | |||

## Frequency Variation of Adaptive MIMO OFDMPosted 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 | power frequency variations ,
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land. INTRODUCTION In this paper we consider a multiple-input multiple-output (MIMO) system in conjunction with orthogonal frequency division multiplexing (OFDM) operating over frequency selective Rayleigh and Rician fading environments. In particular we focus on the eigenvalues of the complex Wishart matrices defined for each OFDM subcarrier and investigate their variation across frequency. Since the throughput and performance of such a system are heavily dependent on the eigenvalues, the results and analysis presented have many applications. Examples include the performance o.................. [:=> Show Contents <=:] | |||

## Orthogonal Frequency Division Multiplexing Frequency Offset Correction full reportPosted 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 | orthogonal frequency division multiplexing definition ,
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f the filters matched to each of the carriers and the second is introduction of ICI(intercarrier
interference) from the other carriers which are no longer orthogonal to the filter. Because, in
OFDM, the carriers are inherently closely spaced in frequency compared to the channel bandwidth, the
tolerable frequency offset becomes a very small fraction of the channel bandwidth. Maintaining
sufficient open loop frequency accuracy can become difficult in links, such as satellite links with
multiple frequency translations. We have presented the algorithm to estimate frequency offset from the demodul.................. [:=> Show Contents <=:] | |||

## CWDM Coarse Wavelength Division Multiplexing full reportPosted 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 | dwdm bandwidth,
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DM) 4 Dense wavelength division multiplexing (DWDM) Coarse wavelength division multiplexing (CWDM) 3.1 Frequency Division Multiplexing (FDM) Frequency division multiplexing assigns different carrier frequencies . Cable television uses FDM. In this technique , the carrier bandwidth is divided into sub-channels of different frequency widths , each carrying a signal at the same time in parallel. FDM is used at radio frequencies . With FDM , information signals with the same bandwidth from multiple sources modulate different frequencies. FDM signals propagate at the same time , through the sam.................. [:=> Show Contents <=:] | |||

## wideband ofdm full reportPosted 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 | wideband delphi estimation process ,
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d incorporation of a small amount of guard time to each symbol, enables the orthoganolity between tones to be preserved of multipath. This is what enables OFDM to avoid the multiple access interference that is present in CDMA systems. The frequency domain representation of a number of tones, shown in figure 4. Highlights the orthogonal nature of the tones used on OFDM system. Notice that the peak of each tone corresponds to a zero level or null of every other tone. The result of this is that there is no interference between tones. When the receiver samples at the center .................. [:=> Show Contents <=:] | |||

## WIDEBAND OFDMPosted 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 | ofdm books ,
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s multiple modulated carriers tightly together reducing the required bandwidth.OFDM was invested in
1960?s, only recently it has recognized as an excellent method for bi-directional wireless data ..................[:=> Show Contents <=:] |

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