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Abstract
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Article Information:
Filter Based Interference Mitigation in Multi Band-OFDM
Avila J. and Thenmozhi K.
Corresponding Author: Avila J
Submitted: May 17, 2013
Accepted: June 12, 2013
Published: February 20, 2014 |
Abstract:
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This study aims at to mitigate the interference between the primary user and secondary user in the wireless environment. This becomes necessary task because with the growing demand for bandwidth for wireless connectivity, it has become essential to come up with innovative solutions to tackle the demand. Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) offers a compelling answer for higher bandwidth and data rate requirements. The performance of multi band OFDM has been tarnished by narrow band interference due to the existence of primary users in the UWB spectrum. This occurs due to the leakage of spectral interference power. Despite the fact that Multiband OFDM has the inherent capability to mitigate the interference, independent mitigation techniques become necessary when the interference level is too high. In this study, interference mitigation is carried out by filtering action at the receiver. Results of simulation are compared to analyze the performance of the filters. Further steps have been taken out to enhance the performance of multiband OFDM system which in turn will be helpful in mitigating the interference.
Key words: Discrete Wavelet Transform (DWT), filters, Multi Band-Orthogonal Frequency Division Multiplexing (MB-OFDM), narrow band interference, Ultra Wide Band (UWB), ,
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Cite this Reference:
Avila J. and Thenmozhi K., . Filter Based Interference Mitigation in Multi Band-OFDM. Research Journal of Applied Sciences, Engineering and Technology, (7): 1438-1441.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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