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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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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 ..................[:=> 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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n RTL modules and do a co-simulation of SPW system and Verilog. This helps in verifying the RTL implementation of algorithms against the SPW/C implementation.
..................[:=> 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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. Doppler shift refers to the change on frequency of the signal because of relative motion between the transmitter and the receiver.
The Doppler shift introduces another type of interference in OFDM i.e. inter carrier interference (ICI). OFDM divided the spectrum into narrowband subcarriers and they are tightly spaced simply because they are orthogonal. One of the requirements for orthogonality is to maintain the subcarrier spacing exactly the reciprocal of the symbol period. The figure below shows the frequency shifts thus changing the subcarrier spacing which results in the loss of orthogon..................[:=> 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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genvalues.
- Link gain results including the PDF, the CDF and variance of the link gain difference, and the ACF of the link gain.
-Simple approximations to the ACF of the maximum eigenvalue and to the variance of the maximum eigenvalue difference.

The second part of this paper focuses on the level crossing rates (LCRs) of BERs across the frequency bins of a MIMO-OFDM system operating over frequency selective Rayleigh fading environments. Using the results in , here we develop analysis for calculating the LCR of BER in an adaptive MIMO-OFDM system which may use multiple eigenvalues. ..................[:=> 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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pendent) frequencies (typically dozens to thousands). (Because the frequencies are so closely spaced, each one only has room for a Narrowband signal). This, coupled with the use of advanced modulation techniques on each component, results in a signal with high resistance to interference.
Application:
OFDM is used in many communications systems such us: ADSL, Wireless LAN, DAB, DVB, UWB and PLC.
Characteristics:
An OFDM baseband signal is the sum of a number of orthogonal sub-carriers, with data on each sub-carrier being independently modulated commonly using some type of quad..................[:=> 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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s a simple schematic of a CWDM system. Optical signals at eight different wavelengths from separate transmitters arc combined in a multiplexer at the left . The signals travel through the same fiber from the multiplexer to an add / drop multiplexer in the middle , which routes one wavelength, to a point at the bottom and picks up another signal at the same wavelength to show it is a different signal.
At the right side , the eight signals are split in a demultiplexers and routed to separate receivers ,one for each wavelength. The multiplexer i takes separate wavelengths and combines them , and..................[:=> 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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users. Multiple users share a given band with in this
manner, yielding the system called OFDMA. Each user can be assigned a
predetermined number of tones when they have information to send, or
alternatively, a user can be assigned a variable number of tones on the
amount of information that they have to send.
OFDM can be combined with frequency hopping to create a spread spectrum
system, realizing the benefits of frequency diversity and interference
averaging property. In frequency hopping spread spectrum system, each
usersâ„¢ set of tones is changed after each time ..................[:=> 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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s invested in 1960?s, only recently it has recognized as an excellent method for bi-directional wireless data communication. It is extremely efficient in mitigating common problems in high-speed communication such as multipath fading and RF noise interference. It can be considered ..................[:=> Show Contents <=:]



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