The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Performance Analysis of Advanced MMSE Multi-User Detector for DS/CDMA systems

DS/CDMA 시스템의 개선된 MMSE 다중사용자 검파기 성능분석

  • 감두열 (삼성전자 정보통신총괄 무선 사업부 소프트웨어개발부)
  • Published : 2000.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, the performance of the MMSE multiuser detector is compared with the conventional detector with respect to the signal-to-noise ratio, the number of users and the Nakagami parameter under AWGN as well as Nakagami fading channel. The results show that the MMSE multiuser detector is superior to the conventional detector with respect to cancelling the multiple access interference. However, its drawback is the hardware's complexity. To solve this drawback, the advanced MMSE multiuser detector is presented, and its performance is analyzed. The number of taps in the advanced MMSE multiuser are independent of the processing gain. Thus, the system engineer can choose the appropriate number of taps in the detector to achieve a optimal trade-off between the hardware complexity and the performance of system.

Keywords

References

  1. IEEE Trans. on Vehic. Technol. v.40 no.2 On the Capacity of a Cellular CDMA System K. S. Gilhousen;I. M. Jacobs;R. Padovani;A. J. Viterbi;L. A. Weaver;C. E. Wheatley III
  2. IEEE Electronics Letters. v.35 no.17 DS/CDMA Closed-loop Power Control with Adaptive Algorithm Sang Kyu Park;Ho Sung Nam
  3. IEEE PIMRC'98 v.2 Achieving MAI Cancellation In An Asynchronous DS/CDMA System by Optimum Single-User Detection N. R. Patel;T. O'Farrell
  4. IEEE Commun. Mag. Multi-User Detection for DS/CDMA Communications S. Moshavi
  5. IEEE Trans. on Inform. Theory v.IT-32 no.1 Minimum Probability of Error for Asynchronous Gaussian Multiple-Access Channels S. Verdu
  6. Wideband CDMA For Third Genaration Mobile Communications T. Ojanpera;R. Prasad
  7. IEEE Trans. on Vehic.Tech. v.48 no.3 On Higher Order Statistics of the Nakagami-m Distribution M. D. Yacoub;J. E. V. Bautista;L. G. R. Guedes
  8. Applications of Digital Wireless Technologies to Global Wireless Communications S. Sampei
  9. Multiuser Detection S. Verdu
  10. IEEE Trans. on Commun. v.43 no.2/3/4 An Adaptive Direct-Sequence Code-Division Multiple-Access Receiver for Multiuse Interference Rejection S. L. Miller
  11. Adaptive Filter Theory(2nd Edition) S. Haykin
  12. Probability, Random Variables, and Stochastic Process(3rd Edition) A. Papoulis
  13. Digital Communications(3rd Edition) J. G. Proakis