Skip to content

Advertisement

  • Research Article
  • Open Access

A 2-bit Adaptive Delta Modulation System with Improved Performance

EURASIP Journal on Advances in Signal Processing20062007:016286

https://doi.org/10.1155/2007/16286

  • Received: 10 May 2006
  • Accepted: 26 August 2006
  • Published:

Abstract

A 2-bit adaptive delta modulation system with improved performance is proposed in this paper. Its main characteristic is a new adaptation algorithm that incorporates both memory and look-ahead instantaneous step-size estimation and leads the modulator into generating a 2-bit output codeword. As shown by computer simulation results, the proposed system offers reduced overshoot and fast response to signal variations in comparison to other similar systems.

Keywords

  • Information Technology
  • Computer Simulation
  • Signal Variation
  • Improve Performance
  • Quantum Information

[12345678910]

Authors’ Affiliations

(1)
Laboratory of Electronics, Department of Physics, University of Athens, Panepistimiopolis, Athens, 157 84, Greece

References

  1. Jayant NS: A daptive delta modulation with a one-bit memory. Bell Systems Technical Journal 1970, 49: 321-342.View ArticleGoogle Scholar
  2. Steele R: Delta Modulation Systems. Pentech Press, London, UK; 1975.Google Scholar
  3. Jayant NS: Adaptive quantization with a one-word memory. Bell Systems Technical Journal 1973,52(7):1119-1144.View ArticleGoogle Scholar
  4. Cummiskey P, Jayant NS, Flanagan JL: Adaptive quantization in differential PCM coding of speech. Bell Systems Technical Journal 1973,52(7):1105-1118.View ArticleGoogle Scholar
  5. Goodman DJ, Gersho A: Theory of an adaptive quantizer. IEEE Transactions on Communications 1974,22(8):1037-1045. 10.1109/TCOM.1974.1092334View ArticleGoogle Scholar
  6. Sakane FT, Steele R: Two-bit instantaneously adaptive delta modulation for PCM encodin. The Radio and Electronic Engineer 1978, 48: 187-197. 10.1049/ree.1978.0028View ArticleGoogle Scholar
  7. Tombras GS: A study of methods to improve LDM and ADM performance, Ph.D. thesis. University of Thessaloniki, Thessaloniki, Greece; 1988.Google Scholar
  8. Tombras GS, Karybakas CA: New adaptation algorithm for a two-digit adaptive delta modulation system. International Journal of Electronics 1990,68(3):343-349. 10.1080/00207219008921176View ArticleGoogle Scholar
  9. Aldajani MA, Sayed AH: A stable adaptive structure for delta modulation with improved performance. Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP '01), May 2001, Salt Lake City, Utah, USA 4: 2621-2624.Google Scholar
  10. Aldajani MA, Sayed AH: Stability and performance analysis of an adaptive sigma-delta modulator. IEEE Transactions on Circuits and Systems II 2001,48(3):233-244. 10.1109/82.924066View ArticleGoogle Scholar

Copyright

Advertisement