Efficiency Comparison Between CDMA and PRMA-HS in Low Earth Orbit Mobile Satellite Systems

  • Andrea Abrardo
  • Giovanni Giambene
  • David Sennati


This paper deals with the spectral efficiency comparison between Code Division Multiple Access (CDMA) and a modified version of Packet Reservation Multiple Access (PRMA), called PRMA with Hindering States (PRMA-HS), in a Low Earth Orbit — Mobile Satellite System (LEO-MSS). The same Rice channel model, available bandwidth, source and channel coding, energy per bit, satellite antenna system and satellite constellation altitude have been assumed in both cases. A performance analysis of both CDMA and PRMA-HS has permitted to evaluate their spectral efficiency. We have obtained that PRMA-HS has not a satisfactory performance when the fading margin is low, especially if also the Rice factor is low. Whereas CDMA maintains a certain capacity also for low fading margin values.


Spectral Efficiency Code Division Multiple Access Universal Mobile Telecommunication System Universal Mobile Telecommunication System Packet Loss Probability 
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  1. [1]
    S. Cacopardi, and F. Frescura, F. Martininno, “Complex CDMA Versus FDMA/SCPC for Low and Medium Rate Applications for Fixed Satellite Services”, IN. Journal of Sat. Comm., pp. 23–34, Vol. 14, 1996.CrossRefGoogle Scholar
  2. [2]
    S. Nanda, D. J. Goodman, U. Thor, “Performance of PRMA: a Packet Voice Protocol for Cellular Systems”, IEEE Trans. on Veh. Tech.,VoL 40, No. 3, pp. 584–598, Aug. 1991.CrossRefGoogle Scholar
  3. [3]
    V. H. MacDonald, “The Cellular concept”. Bell Syst. Tech. J., Vol. 58, pp. 1–41, Jan. 1979.Google Scholar
  4. [4]
    Michele Zorzi, Ramesh R. Rao, Laurence B. Milstein, “Error Statistics in Data Transmission over Fading Channels”, IEEE Trans. Comm., Vol. 46, No. 11, pp. 1468–1477, Nov. 1998.CrossRefGoogle Scholar
  5. [5).
    H. Bischl, A. Jahn, E. Lutz, “Wideband Channel Model for UMTS Satellite Communications”, COST 252 TD(97)19. Google Scholar
  6. [6]
    E. Del Re, R. Fantacci, G. Giambene, S. Walter, “Performance Analysis of an Improved PRMA Protocol for Low Earth Orbit Mobile Satellite Systems”, IEEE Trans. on Veh. Tech., Vol. 48, No. 3, pp. 985–1001, May 1999.CrossRefGoogle Scholar
  7. [7]
    Robert K. Morrow, “Accurate CDMA BER Calculations with Low Computational Complexity”, IEEE Trans. Commun., Vol. 46, No 11, pp. 1413–1417, Nov. 1998.CrossRefGoogle Scholar
  8. [8]
    Y. Ishikawa, N. Umeda, “Capacity Design and Performance of Call Admission Control in Cellular CDMA Systems”, IEEE JSAC, Vol. 15, No. 8, pp. 1627–1635, Oct. 1997.Google Scholar
  9. [9]
    F. Vatalaro, G. Emanuele Corazza, C. Caini, C. Ferrarelli, “Analysis of LEO, MEO, and GEO Global Mobile Satellite Systems in the Presence of Interference and Fading”, IEEE JSAC,Vol. 13, No. 2, pp. 291.300, Febr.l995.Google Scholar

Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • Andrea Abrardo
    • 1
  • Giovanni Giambene
    • 1
  • David Sennati
    • 1
  1. 1.Dipartimento di Ingegneria dell’InformazioneUniversità degli Studi di SienaSienaItaly

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