Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

Relationships between Diversity Techniques and Channel Coding Rates for OFDM and SC-FDE Systems

OFDM 및 SC-FDE 시스템에서의 다이버시티 기술과 채널부호화율의 상관관계

  • Rim, Min-Joong (Department of Information and Communications Engineering, Dongguk University)
  • 임민중 (동국대학교 정보통신공학과)
  • Published : 2008.11.25
Download PDF
⟨ Previous Next ⟩

Abstract

This paper addresses relationships between diversity techniques and channel coding rates for OFDM and SC-FDE systems. In OFDM systems it is important to select proper channel coding rates according to multi-path channel profiles and low channel coding rates are required with cyclic delay diversity compared to the case of space time coding. On the other hand, it is not necessary to use low channel coding rates for SC-FDE systems where DFT spreading is applied to OFDM and relatively high channel coding rates can be used regardless of diversity techniques.

이 논문에서는 OFDM 및 SC-FDE 시스템에서 다이버시티 기술의 적용이 채널부호화율에 미치는 상관관계에 대해서 살펴본다. OFDM 시스템에서는 채널의 다중경로 프로파일에 따라서 적절한 채널부호화율의 결정이 필요하며 순환지연 다이버시티 기술을 적용하는 경우가 시공간 부호화 기술을 적용하는 경우보다 더 낮은 채널부호화율을 필요로 한다. 이에 반해서 OFDM에 DFT 확산을 적용한 SC-FDE 시스템에서는 낮은 채널부호화율을 적용할 필요성이 없으며 다이버시티 기술의 적용과 상관없이 상대적으로 높은 채널부호화율이 사용될 수 있다.

Keywords

References

  1. Z. Wang, G. B. Giannakis, 'Wireless Multicarrier Communications,' IEEE Signal Processing Magazine, Vol.17, No.3, pp.29-48, May 2000 https://doi.org/10.1109/79.841722
  2. H. Liu, G. Li, OFDM-Based Broadband Wireless Networks, John Wiley & Sons Inc. 2005
  3. H. Witschnig, T. Mayer, A. Springer, A. Koppler, 'A Different Look on Cyclic Prefix for SC/FDE,' PIMRC, pp.824-828, September 2002
  4. H. Witschnig, G. Ossberger, A. Springer, A. Koppler, L. Maurer, M. Huemer, R. Weigel, 'The Effect of Blockwise Transmission on Higher-Order Modulation Schemes for SC/FDE,' International Symposium on Wireless Personal Multimedia Communications, pp.27-30, October 2002
  5. D. Falconer, S.L. Ariyavisitakul, A. Benyamin-Seeyar, B. Eidson, 'Frequency Domain Equalization for Single-Carrier Broadband Wireless Systems,' IEEE Communications Magazine, Vol.40, No.4, pp.58-66, April 2002
  6. A. Paularj, R. Nabar, D. Gore, Introduction to Space-Time Wireless Communications, Cambridge University Press, 2003
  7. D. Gesbert, M. Shafi, D.S. Shiu, P.J. Smith, A. Naguib, 'From Theory to Practice: An Overview of MIMO Space-Time Coded Wireless Systems,' IEEE Journal on Selected Areas in Communications, Vol.21, No.3, pp.281-302, April 2003 https://doi.org/10.1109/JSAC.2003.809458
  8. G. Bauch, J.S. Malik, 'Orthogonal Frequency Division Multiple Access with Cyclic Delay Diversity', Smart Antennas, 2004. ITG Workshop, pp.17-24, March 2004.(916)
  9. A. Huebner, F. Schuehlein, M. Bossert, E. Costa, H. Haas, 'A Simple Space-Frequency Coding Scheme with Cyclic Delay Diversity for OFDM,' Personal Mobile Communications Conference, 2003. 5th European, pp.106-110, April 2003
  10. G. Bauch, and J. S. Malik, 'Cyclic delay diversity with bit-interleaved coded modulation in orthogonal frequency division multiple access', IEEE Trans. Wireless Communications, vol. 5, no. 8, pp. 2092-2100, Aug. 2006 https://doi.org/10.1109/TWC.2006.1687724
  11. D.S. Yoo, W.E. Stark, 'Characterization of WSSUS Channels: Normalized Mean Square Covariance and Diversity Combining,' IEEE Trans. on Wireless Communications, Vol.4, No.4, pp.1307-1310, July 2005 https://doi.org/10.1109/TWC.2005.847019
  12. Y.C. Liang, W.S. Len, Y. Zeng, C. Xu, 'Design of Cyclic Delay Diversity for Single Carrier Cyclic Prefix Transmissions with Block-Iterative GDFE Receiver,' IEEE Trans. on Wireless Communications, Vol.7, No.2, pp.677-684, February 2008 https://doi.org/10.1109/TWC.2008.060625
  13. R1-031303, Ericsson, 'System-level evaluation of OFDM - further considerations,' 3GPP RAN WG1 #35, Lisbon, Portugal, November 2003
  14. T. M. Cover and J. A. Thomas, Elementary of Information Theory, Wiley, New York, 1991