Spectral Emission Mask Shaping for OFDM in Cognitive Radios

Author:

Kale Ms. Swarnita Gorakshnath1,G. B. Prof. Kale1

Affiliation:

1. Amrutvahini Polytechnic, Sangamner, Maharashtra, India

Abstract

Orthogonal frequency division multiplexing (OFDM) is characterized by spectral efficiency. It enables flexible and agile spectrum allocation. But still it lags as it suffers from spectral leakage in the form of large side lobes. It leads to inter-channel interference if not handled carefully.in proposed system spectral emission mask system is implemented to combat spectral leakage and ultimately avoiding adjacent channel interference. A spectral mask, also known as a channel mask or transmission mask is a mathematically-defined set of lines applied to the levels of radio (or optical) transmissions. The spectral mask is generally intended to reduce adjacent-channel interference by limiting excessive radiation at frequencies beyond the necessary bandwidth. The proposed system is implemented over MATLAB platform using script language.

Publisher

Naksh Solutions

Subject

General Medicine

Reference14 articles.

1. Md. Abdullah Al Baki, Mohammad Zavid Parvez “Peak To Average Power Ratio (Papr) Reduction In Ofdm Based Radio Systems” Electrical Engineering Blekinge Institute of Technology, May 2010.

2. Krongold, B. S. and D. L. Jones, “PAPR reduction in OFDM via active constellation extension,” IEEE Trans. on Broadcasting, Vol. 49, 258–268, Sept. 2003.

3. Employment of Pulse Shaping Techniques for Efficient PAPR Reduction in OFDM System Tangina Sultana and Shamim Ara Shawkat Institute of Information and Communication Technology (IICT).

4. Sukhpal Singh, Harmanjot Singh, “Review Paper on OFDM-Concepts and Applications” IJEDR Volume 3, Issue 3, 2015.

5. Brijesh Kumar, “ A Review paper on orthogonal frequency division multiplexing (OFDM)”, International Journal of Scientific & Engineering Research, Volume 6, Issue 2,February-2015.

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