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A Real-Time Zero-Crossing Demodulation Concept

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Abstract

Short range communication systems such as Bluetooth and Digital Enhanced Cordless Telecommunications require low-cost transceiver structures. Hence, the development of appropriate receiver techniques has been a major research topic. Particularly, analog limiter–discriminator with integrate and dump filtering (LDI) techniques have received considerable attention. With the availability of digital signal processing, the digital implementation of LDI techniques has become increasingly attractive. In order to make LDI receivers more accessible, zero-crossing detection was proposed. In this communication, the authors shall focus on a novel, yet promising, approach to digital zero-crossing detection in the intermediate frequency domain. Zero-crossing demodulation is an irregular sampling technique, which replaces the commonly employed regular, i.e. temporally equidistant sampling technique in the mentioned low-cost receivers. In this manuscript, a real-time capable receiver concept deploying zero-crossing demodulation shall be presented. First, the authors shall present the theoretical aspects of zero-crossing demodulation with special focus on both Bluetooth Basic Rate and Bluetooth Enhanced Data Rate. Next, the obtained performance results in terms of the bit error ratio shall be given.

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Authors and Affiliations

  1. Chair of Communication Technologies, Universität Duisburg-Essen, Oststrasse 99, D-47057, Duisburg, Germany

    Tobias Scholand, Christoph Spiegel, Andreas Waadt, Admir Burnic & Peter Jung

Authors
  1. Tobias Scholand
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  2. Christoph Spiegel
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  3. Andreas Waadt
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  4. Admir Burnic
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  5. Peter Jung
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Correspondence to Peter Jung.

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Scholand, T., Spiegel, C., Waadt, A. et al. A Real-Time Zero-Crossing Demodulation Concept. Wireless Pers Commun 43, 157–183 (2007). https://doi.org/10.1007/s11277-006-9216-5

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