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Precoding in the Digital Wireless Local Loop

  • J. P. Meehan
  • A. D. Fagan
Conference paper

Abstract

Flexible precoding is proposed as a technique to improve the signal to noise ratio in a wireless local loop over the “last mile” of the telecommunications network to the consumer. Flexible precoding pre-equalises the transmission signal by performing a stable feedback filtering operation. Performance results show that flexible precoding outperforms a fractionally spaced equaliser over quasi static and slowly varying continuous small cell mobile channels at high transmission bit rates. Hence the quality of service or capacity of the wireless local loop can be maximised.

Keywords

Symbol Error Rate Intersymbol Interference Decision Feedback Equaliser Portable Station Decision Feedback Equalisation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    R. Price, “Nonlinearly Feedback Equalised PAM versus Capacity for Noisy Filter Channels”, Proc. ICC 1972, June 1972.Google Scholar
  2. 2.
    R. Laroia, S. Tretter, N. Farvardin, “A Simple and Effective Precoding Scheme for Noise Whitening on Intersymbol Interference Channels”, IEEE Trans. Commun., Vol. 41, No. 10, pp. 1460–1463, October 1993.zbMATHCrossRefGoogle Scholar
  3. 3.
    M. Tomlinson, “New Automatic Equaliser Employing Modulo Arithmetic”, Electron. Lett., Vol. 7, pp. 138–139, March 1971.CrossRefGoogle Scholar
  4. 4.
    H. Harashima, H. Miyakawa, “Matched-Transmission Technique for Channels with Intersymbol Interference”, IEEE Trans. Commun., Vol.COM-20, pp. 774–780, August 1972.Google Scholar

Copyright information

© Springer-Verlag London Limited 1998

Authors and Affiliations

  • J. P. Meehan
    • 1
  • A. D. Fagan
    • 1
  1. 1.DSP Research Group, Dept. of Electronic and Electrical EngineeringUniversity College DublinIreland

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