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Analysis of interference cancellation techniques in OFDMA systems employing adaptive antenna arrays

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Radiophysics and Quantum Electronics Aims and scope

We analyze the problem of interference cancellation in OFDMA cellular communication systems employing adaptive antenna arrays at the receiver and operating in the channels with frequency-selective fading and interference from the neighboring base stations. This problem is very important for modern broadband cellular systems operating with a low coefficient of multiple use of frequencies. Under such conditions of the network deployment, the system efficiency is restricted by the level of intrachannel interference from the neighboring base stations transmitting in the same frequency channel. In this work, we analyze different methods for measuring the interference characteristics and using them for spatial processing of received signals. Five different methods for signal processing in an adaptive antenna array of the receiver are discussed. Each approach (reception method) has its own interference immunity and complexity degree. Comparative analysis of the interference immunity of the considered receivers has been performed for different frequency-channel loads and different numbers of interfering stations. Recommendations for using the considered receivers are given.

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Authors and Affiliations

  1. N. I. Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia

    A. V. Davydov & A. A. Mal’tsev

Authors
  1. A. V. Davydov
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  2. A. A. Mal’tsev
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Correspondence to A. A. Mal’tsev.

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 54, No. 6, pp. 474–484, June 2011.

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Davydov, A.V., Mal’tsev, A.A. Analysis of interference cancellation techniques in OFDMA systems employing adaptive antenna arrays. Radiophys Quantum El 54, 430–439 (2011). https://doi.org/10.1007/s11141-011-9303-7

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  • DOI: https://doi.org/10.1007/s11141-011-9303-7

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