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An Approach for Improving Signal to Interference Plus Noise Ratio in MC DS-CDMA Downlink System

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Book cover Mobile Communication and Power Engineering (AIM 2012)

Part of the book series: Communications in Computer and Information Science ((CCIS,volume 296))

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Abstract

Transmitter based linear precoding scheme that outperforms conventional precoding by making use of a portion of the interference between the users in a multicarrier direct sequence code-division multiple-access (MC DS-CDMA) system downlink is proposed. A part of interference utilization is achieved by selectively orthogonalizing the desired symbols to destructive interference by means of precoding while allowing interference that constructively contributes to the useful signal’s energy. Existence and exploitation of constructive interference effectively spreads the signal constellation and enhances the signal-to-interference-plus-noise ratio (SINR) at the receiver. The scheme introduced in this project applies to the downlink of cellular phase-shift keying (PSK)-based MC DS-CDMA systems.

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Author information

Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Adhiparasakthi Engineering College, Melmaruvathur, 603 319, India

    A. K. Gnanasekar, D. Agilandeswari & V. Nagarajan

Authors
  1. A. K. Gnanasekar
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  2. D. Agilandeswari
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  3. V. Nagarajan
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Editor information

Editors and Affiliations

  1. Institute of Doctors Engineering and Scientist, Amsterdam, The Netherlands

    Vinu V Das

  2. Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India

    Yogesh Chaba

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© 2013 Springer-Verlag Berlin Heidelberg

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Gnanasekar, A.K., Agilandeswari, D., Nagarajan, V. (2013). An Approach for Improving Signal to Interference Plus Noise Ratio in MC DS-CDMA Downlink System. In: Das, V.V., Chaba, Y. (eds) Mobile Communication and Power Engineering. AIM 2012. Communications in Computer and Information Science, vol 296. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35864-7_21

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  • DOI: https://doi.org/10.1007/978-3-642-35864-7_21

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-35863-0

  • Online ISBN: 978-3-642-35864-7

  • eBook Packages: Computer ScienceComputer Science (R0)

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