Channel Control and Multiple-Access

  • R. Knopp
  • P. A. Humblet
Part of the The Kluwer International Series in Engineering and Computer Science book series (SECS, volume 366)


This work considers fundamental performance limits for single and multiuser channels on time-varying (fading) channels. We consider systems which are burst-oriented along the lines of GSM and IS-54. We examine the benefits of exploiting channel feedback to vary transmit information rate/power in a single-user (or orthogonal multiuser) scenario. It is shown that significant increases in spectral efficiency can be expected over constant-rate systems. Even in the latter case, however, higher spectral efficiencies can be expected if high outage probabilities are tolerated. For the general multiuser case, channel feedback can be used to exploit multiuser diversity, which can be seen as a form of selection diversity. We show that the optimal multiple-access method in terms of spectral efficiency is channel-controlled TDMA/FDMA. We discuss some practical issues concerning channel-controlled multiple-access.


Fading Channel Power Control Outage Probability Spectral Efficiency Maximum Throughput 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    Wyner A.D., “Shannon-Theoretic Approach to a Gaussian Cellular Multiple Access Channel,” IEEE Trans. on Information Theory, vol. 40, no.6, pp. 1713–1727.Google Scholar
  2. [2]
    Hanly S.H., Information Capacity of Radio Net/works, PhD Thesis, Cambridge, UK, 1993.Google Scholar
  3. [3]
    Steele R., Mobile Radio Communications, Pentech Press 1992, chap 8.Google Scholar
  4. [4]
    Lee W.C.Y., Mobile Communications Engineering, McGraw-Hill, 1982.Google Scholar
  5. [5]
    Ozarow L.H., Shamai S., Wyner A.D., “Information Theoretic Considerations for Cellular Mobile Radio,” IEEE Trans. on Vehic. Tech., vol. 43, no. 2, May 1994, pp. 359–378.CrossRefGoogle Scholar
  6. [6]
    Gallager, R.G., Information Theory and Reliable Communication, Wiley & Sons, 1968.zbMATHGoogle Scholar
  7. [7]
    Goldsmith A., Varaiya P., “Increasing Spectral Efficiency Through Power Control,” Proc. ICC ’93, Geneva, Switzerland, pp. 600–604.Google Scholar
  8. [8]
    Gallager R.G., “An Inequality on the Capacity Region of Multiaccess Multipath Channels,” in Communica tions and Cryptography — Two Sides of One Tapestry -, Kluwer 1994, pp. 129–139.Google Scholar
  9. [9]
    Knopp R., Humblet P.A., “Multiple Accessing over Frequency-Selective Fading Channels,” Proc. PIMRC ’95, Toronto, Canada, pp. 1326–1330.Google Scholar
  10. [10]
    Cover T., Thomas J., Elements of Information Theory., Wiley & Sons, 1991.zbMATHCrossRefGoogle Scholar
  11. [11]
    Cheng R.S., Verdú S., “Gaussian Multiaccess Channels with Capacity Region and Multiuser Water-Filling”, IEEE Trans, on Information Theory, vol. 39, no. 3, May 1993.Google Scholar
  12. [12]
    The Mobile Communications Handbook,, ed. J.D. Gibson, CRC Press, 1996.Google Scholar

Copyright information

© Kluwer Academic Publishers, Boston 1996

Authors and Affiliations

  • R. Knopp
    • 1
  • P. A. Humblet
    • 1
  1. 1.Mobile Communications Dept.Institut EurécomSophia AntipolisFrance

Personalised recommendations