The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
권호 표지

Performance of the Concatenated System of MTCM Codes with STBC on Fast Rayleigh Fading Channels

빠른 레일리 페이딩채널에서 MTCM 부호와 STBC를 결합한 시스템의 성능평가

  • 진익수 (경남대학교 정보통신공학과)
  • Published : 2009.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Space-time block codes (STBC) have no coding gain but they provide a full diversity gain with relatively low encoder/decoder complexity. Therefore, STBC should be concatenated with an outer code which provides an additional coding gain. In this paper, we consider the concatenation of multiple trellis-coded modulation (MTCM) codes with STBC for achieving significant coding gain with full antenna diversity. Using criteria of equal transmit power, spectral efficiency and the number of trellis states, the performance of concatenated scheme is compared to that of previously known space-time trellis codes (STTC) in terms of frame error rate (FER). Simulation results show that MTCM codes concatenated with STBC offer better performance on fast Rayleigh fading channels, than previously known STTC with two transmit antennas and one receive antenna.

STBC는 부호이득을 얻을 수 없지만, 비교적 적은 부호기와 복호기의 복잡도를 가지고 완전한 다이버시티 이득을 얻을 수 있다. 따라서 STBC는 부호이득이 없기 때문에 부호이득을 얻을 수 있는 외부 부호와 결합되어 사용하여야 한다. 본 논문에서는 완전한 다이버시티 이득과 함께 상당한 부호이득을 얻기 위하여, MTCM부호와 STBC를 결합한 시스템을 고려하였다. 공정한 성능 비교를 위하여 동일한 전송 전력, 동일한 대역폭 효율 그리고 동일한 상태 수를 전제하고, 고려한 시스템과 기존에 알려진 STTC부호와 FER 성능 비교를 실시하였다. 모의실험 결과, MTCM부호와 STBC를 결합한 시스템의 성능은 빠른 레일리 페이딩 채널에서 2개의 송신기 안테나와 1개의 수신기 안테나를 사용하는 STTC부호 보다 우수한 성능을 보여주었다.

Keywords

References

  1. S. M. Alamouti, "A simple transmit diversity technique for wireless communications," IEEE J. Selected Areas of Communications, vol. 16, no. 8, pp. 1451-1458, Oct. 1998. https://doi.org/10.1109/49.730453
  2. B. Vucetic and J. Yuan, Space-Time Coding, Wiley, pp. 91-115, 2003.
  3. V. Tarokh, N. Seshadri, A. R. Calderbank, "Space-time codes for high data rate wireless communication: performance criterion and code construction," IEEE Trans. Information Theory, vol. 44, no. 2, pp. 744-765, Mar. 1998. https://doi.org/10.1109/18.661517
  4. W. Firmanto, B. S. Vucetic, and J. Yuan, "Spacetime TCM with improved performance on fast fading channels," IEEE Comm. Lett, vol. 5, no. 4, pp. 154-156, April. 2001. https://doi.org/10.1109/4234.917098
  5. C. Yang, Z. Zhou, W. Zou, and Y. Ye, "Special property of multiple Trellis Coded Modulation utilized for its decoding," Proc. Int. Conf. Wireless Communications, Networking and Mobile Computing, pp. 1-4, Oct. 2008.
  6. D. Divsalar and M. K. Simon, "The design of trellis coded MPSK for fading channels: set partitioning for optimum code design," IEEE Trans. Commun, vol. 36, no. 9, pp. 1013-1024, Sept. 1988. https://doi.org/10.1109/26.7513
  7. G. Ungerboeck, "Channel coding with multilevel/phase signals," IEEE Trans. Inform. Theory, vol. 28, no. 1, pp. 55-67, Jan. 1982. https://doi.org/10.1109/TIT.1982.1056454
  8. S. M. Alamouti, V. Tarokh, and P. Poon, "Trellis coded modulation and transmit diversity: Design criteria and performance evaluation," Proc. IEEE ICUPC'98, pp. 703-707, Oct. 1998.
  9. Y. Gong and K. B. Letaief, "Concatenated space-time block coding with trellis coded modulation in fading channels," IEEE Trans. Wireles. Commun, vol. 1, no. 4, pp. 580-590, Oct. 2002. https://doi.org/10.1109/TWC.2002.804180
  10. M. Uysal and C. N. Georghiades, "Upper bounds in the BER performance of MTCM-STBC schemes over shadowed Rician fading channels," Eurasip J. Applied Signal Processing, Special Issue on Advances in Smart Antennas, vol. 2004, no. 9, pp. 1238-1245, July. 2004. https://doi.org/10.1155/S1110865704311078
  11. H. Shah, A. Hedayat, and A. Nosratinia, "Performance of concatenated channel codes and orthogonal space-time block codes," IEEE Trans. Wireles. Commun., vol. 5, no. 6, pp. 1406-1414, June. 2006. https://doi.org/10.1109/TWC.2006.1638661
  12. E. Biglieri, D. Divsalar, P. J. McLane, and M. K. Simon, Introduction to Trellis-Coded Modulation with Applications, Macmillan, pp. 411-412, 1991.
  13. S. S. Periyalwar and S. M. Fleisher, "A modified design of trellis-coded MPSK for fading channel," IEEE Trans. Commun., vol. 41, no. 6, pp. 874-882, June. 1993. https://doi.org/10.1109/26.231910