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

MMSE Based Nonlinear Precoding for Multiuser MIMO Broadcast Channels with Inter-Cell Interference

다중사용자 다중입출력 하향링크 채널에서 인접셀 간섭을 고려한 MMSE 기반 비선형 프리코딩

  • Lee, Kyoung-Jae (Hanbat National University, Department of Electronics and Control Engineering) ;
  • Sung, Hakjea (Samsung Electronics) ;
  • Lee, Inkyu (Korea University, School of Electrical Engineering)
  • Received : 2016.07.13
  • Accepted : 2016.07.27
  • Published : 2016.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we investigate a minimum mean-squared error based nonlinear successive precoding method as a practical solution of dirty paper coding for multiuser downlink channels where each user has more than one antenna in the presence of other cell interference (OCI). Unlike conventional zero-forcing (ZF) based methods, the proposed scheme takes the OCI plus noise into account when suppressing the inter-cell multiuser interference, which results in improvement of the received signal-to-interference-plus-noise ratio. Simulation results show that the proposed scheme outperforms conventional methods in terms of sum rate for various OCI configurations.

본 논문에서는 다른 셀로부터 발생하는 간섭을 고려하여 다중사용자 다중안테나 하향링크 채널에서 최소평균제곱오차(MMSE: minimum mean-squared error)에 기반한 비선형 연속 프리코딩(precoding) 기법을 제안한다. 기존의 zero forcing(ZF) 기반의 방법과 달리 제안하는 방식은 다른 셀로부터의 간섭을 고려하여 셀 내의 다중사용자 간섭을 억제하는 방식을 취하여 수신단에서의 신호 대 간섭 잡음비를 향상시킬 수 있다. 모의 실험 결과를 통해 제안하는 최소평균제곱오차에 기반한 비선형 전처리 기법이 다양한 셀 간섭 환경에서 기존 방법보다 좋은 성능을 가지는 것을 확인할 수 있다.

Keywords

References

  1. G. Caire and S. Shamai, "On the achievable throughput of a multiantenna Gaussian broadcast channel," IEEE Trans. Inf. Theory, vol. 49, pp. 1691-1706, Jul. 2003. https://doi.org/10.1109/TIT.2003.813523
  2. M. H. M. Costa, "Writing on dirty paper," IEEE Trans. Inf. Theory, vol. 29, pp. 439-441, May 1983. https://doi.org/10.1109/TIT.1983.1056659
  3. A. D. Dabbagh and D. J. Love, "Precoding for multiple antenna gaussian broadcast channels with successive zero-forcing," IEEE Trans. Sign. Process., vol. 55, pp. 3837-3850, Jul. 2007. https://doi.org/10.1109/TSP.2007.894285
  4. Y. Park and D. Park, "Block diagonal decomposition using uniform channel decomposition for multicell MIMO broadcast channels," J. KICS, vol. 40, pp. 2331-2342, Dec. 2015. https://doi.org/10.7840/kics.2015.40.12.2331
  5. S. J. Shim, J. S. Kwak, R. W. Heath, and J. G. Jeffrey, "Block diagonalization for multiuser MIMO with other-cell interference," IEEE Trans. Wirel. Commun., vol. 7, pp. 2671-2681, Jul. 2008. https://doi.org/10.1109/TWC.2008.070093
  6. M. Ahn, S. Eom, and I. Lee, "Vertical sectorization techniques in MISO downlink active antenna systems," J. KICS, vol. 40, pp. 997-1004, Jun. 2015. https://doi.org/10.7840/kics.2015.40.6.997
  7. S. Jang, H.-B. Kong, and I. Lee, "Pilot assignment algorithm for uplink massive MIMO systems," J. KICS, vol. 40, pp. 1485-1491, Aug. 2015. https://doi.org/10.7840/kics.2015.40.8.1485
  8. C. B. Peel, B. M. Hochwald, and A. L. Swindelhurst, "A vector-perturbation technique for near capacity multiantenna multiuser communication - part I: channel inversion and regularization," IEEE Trans. Commun., vol. 53, pp. 195-202, Jan. 2005. https://doi.org/10.1109/TCOMM.2004.840638
  9. H. Sung, K.-J. Lee, and I. Lee, "An MMSE based block diagonalization for multiuser MIMO downlink channels with other cell interference," in Proc. IEEE VTC '09 Fall, pp. 1-5, Anchorage, AK, Sept. 2009.
  10. H. Sung, S.-R. Lee, and I. Lee, "Generalized channel inversion methods for multiuser MIMO systems," IEEE Trans. Commun., vol. 57, pp. 3489-3499, Nov. 2009. https://doi.org/10.1109/TCOMM.2009.11.070404
  11. H. Sung, S.-H. Park, K.-J. Lee, and I. Lee, "Linear precoder designs for K-user interference channels," IEEE Trans. Wirel. Commun., vol. 9, no. 1, pp. 291-301, Jan. 2010. https://doi.org/10.1109/TWC.2010.01.090221