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

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

DOI QR Code

ISI Estimation Using Iterative MAP for Faster-Than-Nyquist Transmission

나이퀴스트 율보다 빠른 전송 시스템에서 반복 MAP을 이용한 ISI 추정 기법

  • Kang, Donghoon (Dept. of Information Communications Eng., Chungnam National University) ;
  • Kim, Haeun (Dept. of Information Communications Eng., Chungnam National University) ;
  • Park, Kyeongwon (Dept. of Information Communications Eng., Chungnam National University) ;
  • Lee, Arim (Dept. of Information Communications Eng., Chungnam National University) ;
  • Oh, Wangrok (Dept. of Information Communications Eng., Chungnam National University)
  • Received : 2017.03.25
  • Accepted : 2017.04.28
  • Published : 2017.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose an inter-symbol interference (ISI) estimation scheme based on the maximum a posteriori (MAP) algorithm for faster-than-Nyquist (FTN) systems. Unfortunately, the ISI estimator based on the MAP algorithm requires relatively high computational complexity. To reduce the complexity of the MAP based ISI estimator, we propose a hybrid ISI estimation scheme based on the MAP and successive interference cancellation (SIC) algorithms. The proposed scheme not only offers good ISI estimation performances but also requires reasonably low complexity.

본 논문에서는 FTN (faster-than-Nyquist) 시스템에서 MAP (maximum a posteriori) 기법을 이용한 ISI(inter-symbol interference) 추정 기법을 제안한다. 제안하는 기법은 FTN 전송으로 인한 ISI를 제거하기 위하여 복조기에서 MAP 기법을 이용하여 복조를 수행한다. 또한 매우 큰 구현 복잡도를 갖는 MAP 기법의 단점을 보안하기 위하여 간단하게 구현 가능한 SIC (successive interference cancellation) 기법과 MAP 기법을 연동하여 낮은 복잡도를 가지면서도 우수한 성능을 나타내는 ISI 제거 기법을 제안한다. 제안하는 기법은 MAP 기법과 비교하였을 때 낮은 복잡도를 가질 뿐만 아니라 기존에 제안된 ISI 추정 기법들보다 우수한 추정 성능을 나타내는 장점이 있다.

Keywords

References

  1. J. E. Mazo, "Faster-than-Nyquist signaling," Bell Syst. Tech. J., vol. 54, no. 8, pp. 1451-1462, Oct. 1975. https://doi.org/10.1002/j.1538-7305.1975.tb02043.x
  2. A. Prlja, J. B. Anderson, and F. Rusek, "Receivers for faster-than-Nyquist signaling with and without turbo equalization," in Proc. IEEE Int. Symp. Information Theory, pp. 464-468, Jul. 2008.
  3. M. El Hefnawy and H. Taoka, "Overview of faster-than-Nyquist for future mobile communication systems," in VTC Spring 2013, Jun. 2013.
  4. C. Douillard, A. Picart, P. Didier, M. Jezequel, C. Berrou, and A. Glavieux, "Iterative correction of intersymbol interference: Turbo equalization," Eur. Trans. Telecommun., vol. 6, pp. 507-511, Sept.-Oct. 1995. https://doi.org/10.1002/ett.4460060506
  5. J. B. Anderson and A. Prlja, "Turbo equalization and an M-BCJR algorithm for strongly narrowband intersymbol interference," in Proc. Int. Symp. Inf. Theory Appl., pp. 261-66, Taichung, Taiwan, Oct. 2010.
  6. S. Sugiura and L. Hanzo, "Frequency-domain equalization aided iterative detection of faster-than-Nyquist signaling," IEEE Trans. Veh. Technol., vol. 64, no. 5, pp. 2122-2128, May 2015. https://doi.org/10.1109/TVT.2014.2336984
  7. W. Yuan, N. Wu, H. Wang, and J. Kuang, "Variational inference-based frequency-domain equalization for faster-than-Nyquist signaling in doubly selective channels," IEEE Signal Process. Lett., vol. 23, no. 9, pp. 1270-1274, Sept. 2016. https://doi.org/10.1109/LSP.2016.2593058
  8. M. Baek, N. Hur, and H. Lim, "Novel interference cancellation technique based on matrix computation for FTN communication system," IEEE MILCOM, pp. 830-834, Oct. 2014.
  9. S. Nie, M. Guo, and Y. Shen, "Interference cancellation technique for faster-than-Nyquist signaling," Electron. Lett., vol. 52, no. 13, pp. 1126-1128, Jun. 2016. https://doi.org/10.1049/el.2015.3722
  10. F. Rusek and J. B. Anderson, "Multistream faster than Nyquist signaling," IEEE Trans. Commun., vol. 57, no. 5, pp. 1329-1340, May 2009. https://doi.org/10.1109/TCOMM.2009.05.070224
  11. D. Dasalukunte, F. Rusek, and V. Owall, "Multicarrier faster-than-Nyquist signaling transceivers: Hardware architecture and performance analysis," IEEE Trans. Cir. and Syst. I: Regular Papers, vol. 58, no. 4, pp. 827-838, Apr. 2011. https://doi.org/10.1109/TCSI.2010.2089549
  12. D. Kang, H. Kim, K. Park, and W. Oh, "Parameter derivation for reducing ISI in 2-dimensional faster-than-Nyquist transmission," J. KICS, vol. 41, no. 10, pp. 1147-1154, Oct. 2016. https://doi.org/10.7840/kics.2016.41.10.1147
  13. D. Kang, H. Kim J. Yun, H. Lim, and W. Oh, "Faster than Nyquist transmission with multiple channel codes," J. KICS, vol. 41, no. 2, pp. 157-162, Feb. 2016. https://doi.org/10.7840/kics.2016.41.2.157
  14. L. Bahl, J. Cocke, F. Jelinek, and J. Raviv, "Optimal decoding of linear codes for minimizing symbol error rate," IEEE Trans. Information Theory, vol. 20, no. 2, pp. 284-287, Mar. 1974.
  15. G. Colavolpe and A. Barbieri, "On MAP symbol detection for ISI channels using the Ungerboeck observation model," IEEE Commun. Lett., vol. 9, no. 8, pp. 720-722, Aug. 2005. https://doi.org/10.1109/LCOMM.2005.1496594
  16. ETSI, Digital video broadcasting (DVB): EN 302 755 V1.2.1