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International Zurich Seminar on Digital Communications

IZS 1994: Mobile Communications Advanced Systems and Components pp 219–229Cite as

Performance of adaptive equalization in typical indoor environments including non-linear power amplifiers

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Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 783))

Abstract

In this paper the performance of offset 4, 16 and 64-QAM indoor radio systems that use equalization techniques are analyzed. We present results for both experimental multipath delay spread measurements and simulated channels. The results show that a system without any equalization technique presents a very poor performance even for low distortion levels. When distortion increases, the introduction of some kind of equalizer becomes necessary. However, the equalization techniques, which are able to compensate the ISI, present a limited performance due to the Rayleigh fluctuations of the signal-to-noise ratio. Furthermore, the degrading effect of non-linear characteristics of power amplifiers are analyzed. A degradation of about 2 dB in terms of signal-to noise ratio has been found.

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References

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Author information

Authors and Affiliations

  1. Department of Signal Theory and Communications, Universidad Politécnica de Cataluña, Barcelona, Spain

    Antonio Valdovinos & Fernando J. Casadevall

Authors
  1. Antonio Valdovinos
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  2. Fernando J. Casadevall
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Christoph G. Günther

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© 1994 Springer-Verlag Berlin Heidelberg

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Valdovinos, A., Casadevall, F.J. (1994). Performance of adaptive equalization in typical indoor environments including non-linear power amplifiers. In: Günther, C.G. (eds) Mobile Communications Advanced Systems and Components. IZS 1994. Lecture Notes in Computer Science, vol 783. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-57856-0_21

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  • DOI: https://doi.org/10.1007/3-540-57856-0_21

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-57856-7

  • Online ISBN: 978-3-540-48359-5

  • eBook Packages: Springer Book Archive

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