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Robust Transmission Over Fast Fading Channels on the Basis of OFDM-MFSK

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Abstract

We present an OFDM-based transmission scheme which is suitable for robust transmission in fast fading environments, where a reliable channel estimate is impossible or very difficult to obtain. Our scheme is based on the combination of noncoherently detected M-ary frequency shift keying (MFSK) and orthogonal frequency division multiplexing (OFDM). Noncoherent detection of OFDM-MFSK allows an arbitrary phase choice for all subcarriers in the transmitter. One possibility to exploit this degree of freedom is to choose the subcarrier phases such, that the peak-to-average power ratio (PARR) is reduced. A second possibility is to use the subcarrier phases to transmit additional data. This can be done by differentially modulating the subcarriers that are occupied by the OFDM-MFSK scheme. Both possibilities do not affect the robustness of the underlying noncoherently detected OFDM-MFSK modulation.

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Authors and Affiliations

  1. Institute of Information Technology, University of Ulm, Albert-Einstein-Allee 43, 89081, Ulm, Germany

    Matthias Wetz, Ivan Periša, Werner G. Teich & Jürgen Lindner

Authors
  1. Matthias Wetz
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  2. Ivan Periša
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  3. Werner G. Teich
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  4. Jürgen Lindner
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Correspondence to Matthias Wetz.

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Wetz, M., Periša, I., Teich, W.G. et al. Robust Transmission Over Fast Fading Channels on the Basis of OFDM-MFSK. Wireless Pers Commun 47, 113–123 (2008). https://doi.org/10.1007/s11277-007-9395-8

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  • DOI: https://doi.org/10.1007/s11277-007-9395-8

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