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

3D Beamforming Techniques in Multi-Cell MISO Downlink Active Antenna Systems for Large Data Transmission

대용량 데이터 전송을 위한 다중 셀 MISO 하향 능동 안테나 시스템에서 3D 빔포밍 기법

  • Received : 2015.09.06
  • Accepted : 2015.11.09
  • Published : 2015.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we provide a new approach which optimizes the vertical tilting angle of the base station for multi-cell multiple-input single-output (MISO) downlink active antenna systems (AAS). Instead of the conventional optimal algorithm which requires an exhaustive search, we propose simple and near optimal algorithms. First, we represent a large system approximation based vertical beamforming algorithm which is applied to the average sum rate by using the random matrix theory. Next, we suggest a signal-to-leakage-and-noise ratio (SLNR) based vertical beamforming algorithm which simplifies the optimization problem considerably. In the simulation results, we demonstrate that the performance of the proposed algorithms is near close to the exhaustive search algorithm with substantially reduced complexity.

본 논문은 다중 셀 다중입력 단일 출력 (MISO : multiple-input single-output) 하향링크 능동 안테나 시스템 (AAS : active antenna systems)에서 기지국의 수직 각도를 최적화하는 새로운 기법을 제시한다. 본 연구에서는 기존의 전역 탐색 방식 대신 간단하면서 최적의 값에 근사한 알고리듬들을 제안한다. 먼저, random matrix theory의 특성을 반영하여 평균 전송용량에 large system approximation이 적용된 수직적 빔포밍 알고리듬을 소개한다. 다음으로, signal-to-leakage-and-noise ratio (SLNR)을 기반으로 최적화 문제를 간단하게 만드는 수직적 빔포밍 알고리듬을 제안한다. 실험 결과를 통해 제안된 알고리듬들의 성능이 기존의 전역 탐색 알고리듬에 비해 복잡도가 매우 감소됨에도 불구하고 거의 비슷한 성능을 보임을 증명하였다.

Keywords

References

  1. C. Song, K.-J. Lee, and I. Lee, "MMSE based transceiver designs in closed-loop nonregenerative MIMO relaying systems," IEEE Trans. Wireless Commun., vol. 9, pp. 2310-2319, Jul. 2010. https://doi.org/10.1109/TWC.2010.07.091234
  2. T. Kim, C. Song, and I. Lee, "Closed-form designs for source-relay joint precoder in MIMO AF relaying systems with decision feedback receiver," in Proc. IEEE ICC, pp. 5532-5536, Jun. 2013.
  3. T. Kim, Y. Jeon, and I. Lee, "Relay selection schemes for two-way multi relaying systems with physical network coding," in Proc. 2012 Autumn KICS, pp. 89-90, Nov. 2012.
  4. J. Kim, "Analysis of spatial multiplexing gain in a two-cell MIMO environment with coordinated base stations," J. KICS, vol. 37C, pp. 376-383, May 2012.
  5. M. Ahn, H.-B. Kong, T. Kim, C. Song, and I. Lee, "Precoding techniques for MIMO AF relaying systems with decision feedback receiver" IEEE Trans. Wireless Commun., vol. 14, pp. 446-455, Jan. 2015. https://doi.org/10.1109/TWC.2014.2350482
  6. S. M. Razavizadeh, M. Ahn, and I. Lee, "Three-dimensional beamforming : A new enabling technology for 5G wireless networks," IEEE Signal Process. Mag., pp. 94-101, Sept. 2014.
  7. F. Gunnarsson, et al., "Downtilted base station antennas-A simulation model proposal and impact on HSPA and LTE performance," in Proc. IEEE VTC-Fall, pp. 1-5, Sept. 2008.
  8. N. Seifi, M. Coldrey, and T. Svensson, "Throughput optimization in MU-MIMO systems via exploiting BS antenna tilt," in Proc. IEEE GLOBECOM, pp. 653-657, Dec. 2012.
  9. Y. Li, X. Ji, M. Peng, Y. Li, and C. Huang, "An enhanced beamforming algorithm for three dimensional MIMO in LTE-Advanced networks," IEEE WCSP, pp. 1-5, Hangzhou, China, Oct. 2013.
  10. W. Lee, S.-R. Lee, H.-B. Kong, S. Lee, and I. Lee, "Downlink vertical beamforming designs for active antenna systems," IEEE Trans. Commun., vol. 62, pp. 1897-1907, Jun. 2014. https://doi.org/10.1109/TCOMM.2014.2320727
  11. Nokia Siemens Networks, Active Antenna Systems A Step-change in Base Station Site Performance, [Online] Available: http://www.nokiasiemensnetworks.comsites/default/files/document/nokia_siemens_networks_active_antenna_system_white_paper_26_01_12.pdf
  12. R. Ramanathan, J. Redi, C. Santivanez, D. Wiggins, and S. Polit, "Ad hoc networking with directional Antennas: A complete system solution," IEEE J. Sel. Areas Commun., vol. 23, pp. 496-506, Mar. 2005. https://doi.org/10.1109/JSAC.2004.842556
  13. 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
  14. H. Huh, S.-H. Moon, Y.-T. Kim, I. Lee, and G. Caire, "Multi-cell MIMO downlink with cell cooperation and fair scheduling: A large-system limit analysis," IEEE Trans. Inf. Theory, vol. 57, pp. 7771-7786, Dec. 2011. https://doi.org/10.1109/TIT.2011.2170123
  15. B. Hockwald and S. Vishwanath, "Space-time multiple access: Linear growth in the sum rate," in Proc. 40th Annu. Allerton Conf., 2002.
  16. S. Wagner, R. Couillet, M. Debbah, and D. T. M. Slock, "Large system analysis of linear precoding in correlated MISO broadcast channels under limited feedback," IEEE Trans. Inf. Theory, vol. 58, pp. 4509-4537, Jul. 2012. https://doi.org/10.1109/TIT.2012.2191700
  17. R. Couillet and M. Debbah, Random Matrix Methods for Wireless Communications, 1st Ed., Cambridge University Press, 2011.
  18. X. Xia, G. Wu, S. Fang, and S. Li, "SINR or SLNR: In successive user scheduling in MU-MIMO broadcast channel with finite rate feedback" in Proc. CMC 2010 Conf., pp. 383-387, Apr. 2010.