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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2008-03-19
Narrow-Band Interference Suppression in CDMA Spread-Spectrum Communication Systems Using Pre-Processing Based Techniques in Transform-Domain
By
Paeiz Azmi,

    Dr. Paeiz Azmi

    Tarbiat Modares University

    Iran

    Homepage

Nooshin Tavakkoli

    Dr. Nooshin Tavakkoli

    Electrical Engineering Department

    Tarbiat Modares University

    Iran

    Homepage

Progress In Electromagnetics Research Letters, Vol. 3, 141-150, 2008
doi:10.2528/PIERL08022602 | Google Scholar

Abstract
In this paper, we present two pre-processing based techniques in unitary transform-domain for narrow-band interference rejection in CDMA communication systems. In our techniques, by using Karhaunen-Loeve Transform (KLT) and Discrete Fourier Transform (DFT), at the transmitter, eigenvectors occupied by NBI are determined; then the energy of the transmitted signal is set to zero into the direction of those determined vectors. Hence, any information is not deleted by NBI through channel. As a result after applying these transforms, a major part of the processing would be shifted to the transmitter, and thus complexity of receiver is reduced. Our simulation results show that the proposed methods improve the performance of the CDMA communication systems in the presence of narrow-band interference.
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Citation
Paeiz Azmi, and Nooshin Tavakkoli, "Narrow-Band Interference Suppression in CDMA Spread-Spectrum Communication Systems Using Pre-Processing Based Techniques in Transform-Domain," Progress In Electromagnetics Research Letters, Vol. 3, 141-150, 2008.
doi:10.2528/PIERL08022602
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