Narrow-Band Interference Suppression in CDMA Spread-Spectrum Communication Systems Based on Sub-Optimum Unitary Transforms

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概要

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• In this paper, we present several unitary transform-domain filtering techniques based on Karhaunen-Loeve Transform (KLT) for narrow-band interference rejection in CDMA communication systems. The reason for selecting the KLT is that it is an optimum unitary transform In the sense of packing the energy of the narrow-band interference. As a result after applying this transform, a small portion of the transformed signal would be interfered by the narrow-band interference, and thus must be set to zero. Due to unavailability of the optimum transform (KLT), several sub-optimum transforms are presented and their performances are compared with the well-known conventional transform methods such as Discrete Fourier Transform (DFT) and Discrete Cosine Transform (DOT) in the presence of both Auto Regressive (AR) and sinusoidal narrow-band interference. Our simulation results show that the proposed transform methods significantly outperform the conventional methods.

• 社団法人電子情報通信学会の論文
• 2002-01-01

著者

• Azmi P

  Tarbiat Modarres Univ. Tehran Irn

• AZMI Paeiz

  the Department of Electrical Engineering, Sharif University of Technology

• NASIRI-KENARI Masoumeh

  the Department of Electrical Engineering, Sharif University of Technology

• Nasiri‐kenari M

  The Department Of Electrical Engineering Sharif University Of Technology

関連論文

• Narrow-Band Interference Suppression in CDMA Spread-Spectrum Communication Systems Based on Sub-Optimum Unitary Transforms

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