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Published in:

Volume 7 Issue 9
September-2020
eISSN: 2349-5162

Unique Identifier

JETIR2009087

Page Number

660-665

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Title

Design of Adaptive Filters for Satellite Communication

ISSN

2349-5162

Cite This Article

"Design of Adaptive Filters for Satellite Communication", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 9, page no.660-665, September-2020, Available :http://www.jetir.org/papers/JETIR2009087.pdf

Abstract

In the last few years, many ruthless digital platforms have been developed for secure satellite communication. These platforms finds wide application in military oriented programs and are largely used for command, tracking and telemetry. Adaptive digital filters are used to enhance the performance of the standard direct sequence spread spectrum by suppressing the interference. To increase the robustness of on-board transponder for jammer attack, the SST equipment for next programs will be featured with adaptive digital rejection filter. Even in DSSS systems, it make use of much larger bandwidth for transmission than that of which is required for the transmission of the information. By using this excess bandwidth the system becomes advantageous as it will be less sensitive to multiple interferences, which may include jammers too. Adaptive Interference Rejection (AIR) algorithms are based on Lest Mean Square (LMS), Normalized Least Mean Square (NLMS) technique. Adaptive Filter is a type of filter which has the quality of self-designing in a non-stationary environment by operating on a recursive algorithm. Structural basis for implementation of adaptive filter is by using transversal filter. Tap weights are used to define the finite impulse response. Optimum filter is obtained by minimizing the mean square error of the error signal which is the difference between desired response and the transversal filter output. The dependence of the mean-squared error on the unknown tap weights may be viewed to be in the form of a multidimensional paraboloid with the unique minimum point, where the paraboloid is referred as error performance surface. ________________________________________________________________________________________________________

Key Words

TTC transponder, Adaptive Interface Rejection (AIR), LMS algorithm, NLMS algorithm, MMSE, Gradient Vector.

Cite This Article

"Design of Adaptive Filters for Satellite Communication", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 9, page no. pp660-665, September-2020, Available at : http://www.jetir.org/papers/JETIR2009087.pdf

Publication Details

Published Paper ID: JETIR2009087
Registration ID: 300791
Published In: Volume 7 | Issue 9 | Year September-2020
DOI (Digital Object Identifier):
Page No: 660-665
ISSN Number: 2349-5162

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Cite This Article

"Design of Adaptive Filters for Satellite Communication", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 9, page no. pp660-665, September-2020, Available at : http://www.jetir.org/papers/JETIR2009087.pdf




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