Advertisement

Data Converter Requirements for Communications

  • Mikael Gustavsson
  • J. Jacob Wikner
  • Nianxiong Nick Tan
Chapter
Part of the The International Series in Engineering and Computer Science book series (SECS, volume 543)

Summary

In this chapter, we have briefed communication-related terminologies and concepts and discussed the impacts of communication systems on data converter requirements. In order to meet a communication system specification, we have derived minimum data converter requirements that are mostly influenced by the error probability and the peak-to-average ratio. We have also discussed optimum data converters for ADSL that are a function of application environments such as the transmit power spectrum, the receive power spectrum, the hybrid rejection, and the background noise. Wideband radio for multi-channel applications are similar to DMT but with much fewer carriers. We have derived optimum A/D converter requirements for wideband radio as a function of the single carrier dynamic range, the number of channels, the noise figure, and the background noise. To apply these knowledge to a specific system, we usually need to add 1~2 bit (or even more) design margin depending on the system trade-offs. Also coding can reduce the data converter requirements by 3~6 dB, which has not been treated in this chapter but can be easily added to the equations. As far as distortions are concerned, they usually follow the SNR requirements without being effected by oversampling.

Keywords

Channel Capacity Noise Floor Digital Subscriber Line Line Code Data Converter 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Jerry G. Gibson, The mobile communication handbook, CRC press, 1996.Google Scholar
  2. [2]
    T. Starr, J. Cioffi, and P. Silverman, Understanding digital subscriber line technology Prentice Hall, 1999.Google Scholar
  3. [3]
    J. G. Proakis, Digital communications, McGraw-Hill, 1997.Google Scholar
  4. [4]
    IEEE Draft P802.3ab/D.30, Physical layer specification for 1000 Mb/s operation on four pairs of category 5 or better balanced twisted pair cable (1000BASE-T), June 12, 1998.Google Scholar
  5. [5]
    R. Bates and D. Gregory, Voice and data communications handbook, McGraw-Hill, 1997.Google Scholar
  6. [6]
    G. H. Im and J. J. Weraer, “Bandwidth-efficient digital transmission over unshielded twisted-pair wiring,” IEEE J. on Selected areas in communication, Vol. 12, No. 9, Dec 1995, pp. 1643–55.Google Scholar
  7. [7]
    W. Y. Chen, DSL simulation techniques and standards development for digital subscriber line systems, Macmillan Technical Publishing, 1998.Google Scholar
  8. [8]
    E.E. Shannon, “A mathematicaltheory of communication,” Bell systems Technical Journal, vol. 27, 1948, pp.379–423 (Part I), pp.623–656 (Part II).CrossRefGoogle Scholar
  9. [10]
    F. Larsen, A. Muralt, and N. Tan, “AFEs for xDSL,” Electronics Times 1999 Analog & Mixedsignal Application conferences, Oct 5-7, Santa Clara, CA.Google Scholar

Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Mikael Gustavsson
  • J. Jacob Wikner
  • Nianxiong Nick Tan

There are no affiliations available

Personalised recommendations