Journal of Communications and Networks

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

A Retransmission Power Adjustment Scheme for Performance Enhancement in DS/SSMA ALOHA with Packet Combining

  • Seo Hanbyul (School of Electrical Engineering, Seoul National University) ;
  • Park Seongyong (Samsung Electronics Co. Ltd.) ;
  • Lee Byeong Gi (School of Electrical Engineering, Seoul National University)
  • Published : 2005.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we present a retransmission power adjustment (RPA) scheme for DS/SSMA ALOHA packet radio systems with packet combining. In the proposed RPA scheme, retransmission power is adjusted in such a way that the erroneously-received packet can be recovered with a minimized interference to other user packets. We analyze the performance of the system with the RPA by employing the equilibrium point analysis (EPA), and confirm that the results obtained from the EPA are very close to the simulation results in low power cases. Simulation results demonstrate that the RPA scheme brings forth performance gain in the throughput and the average delay while saving a significant amount of transmission power. We also investigate the stability of the system from the EPA results, and conclude that the system becomes stable as the offered load increases or the level of retransmission power decreases.

Keywords

References

  1. A. M. Y. Bigloo, T. A. Gulliver, and V. K. Bhargava, 'Maximumlikelihood decoding and code combining for DS/SSMA slotted ALOHA,' IEEE Trans. Commun., vol. 45, pp. 1602-1612, Dec. 1997 https://doi.org/10.1109/26.650239
  2. Q. Zhang, T. F. Wong, and J. S. Lehnert, 'Performance of a type-II hybrid ARQ protocol in slotted DS-SSMA packet radio systems,' IEEE Trans. Commun., vol. 47, pp. 281-290, Feb. 1999 https://doi.org/10.1109/26.752134
  3. D. Chase, 'Code combining - a maximum-likelihood decoding approach for combining an arbitrary number of noisy packets,' IEEE Trans. Commun., vol. COM-33, no. 5, pp. 385-393, May 1985
  4. S. Souissi and S. B. Wicker, 'A diversity combining DS/CDMA system with convolutional encoding and Viterbi decoding,' IEEE Trans. Veh. Technol., vol. 44, pp. 304-312, May 1990 https://doi.org/10.1109/25.385923
  5. A. Annamalai, R. S. C. Wong, and V. K. Bhargava, 'Throughput enhancement of a slotted DS-CDMA ALOHA with packet combining,' in Proc. IEEE Pacific Rim Conf. Communications, Computers and Signal processing, Aug. 1997, pp. 506-510 https://doi.org/10.1109/PACRIM.1997.620312
  6. Q. Zhang, T. F. Wong, and J. S. Lehnert, 'Stability of a type-II hybrid ARQ protocol for slotted DS-SSMA packet radio systems,' in Proc. IEEE INFOCOM'98, San Fransisco, CA, Apr. 1998, vol 3, pp. 1301-1308
  7. D. Tuninetti and G. Caire, 'The throughput of some wireless multiaccess systems,' IEEE Trans. Inform. Theory, vol. 48, pp. 2773-2785, Oct. 2002 https://doi.org/10.1109/TIT.2002.802629
  8. X. Cai, Y. Sun, and A. N. Akansu, 'Performance of CDMA random access systems with packet combining in fading channels,' IEEE Trans. Commun., vol. 2, pp. 413-419, May 2003 https://doi.org/10.1109/TWC.2003.811175
  9. S. Tasaka, 'Stability and performance of the R-ALOHA packet broadcast system,' IEEE Trans. Comput., vol. 32, no. 8, pp. 717-726, Aug. 1983 https://doi.org/10.1109/TC.1983.1676309
  10. F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, New York: North-Holland Publishing Company, 1977
  11. M. B. Pursley, 'Performance evaluation for phase-coded spread-spectrum multiple-access communications - Part I: System analysis,' IEEE Trans. Commun., vol. COM-25, pp. 795-799, Aug. 1977
  12. R. K. Morrow, Jr., and J. S. Lehnert, 'Bit-to-bit error dependence in slotted DS/SSMA packet systems with random signature sequences,' IEEE Trans. Commun., vol.37, pp. 1052-1061, Oct. 1989 https://doi.org/10.1109/26.41160