Optimal Inter-Element Spacing of FD-MIMO Planar Array in Urban Macrocell with Elevation Channel Modelling = Optimal Inter-Element Spacing of FD-MIMO Planar Array in Urban Macrocell with Elevation Channel Modelling

다국어 초록 (Multilingual Abstract)

Full Dimension multiple input multiple output (FD-MIMO) architecture employs a planar array design at the Base Station (BS) to provide high order multi-user MIMO (MU-MIMO) via simultaneous data transmission to large number of users. With FD-MIMO, the BS can also adjust the beam direction in both elevation and azimuth direction to concentrate the energy on the user of interests while minimizing the interference leakage to co-scheduled users in the same cell or users in the neighboring cells. In a typical highly populated macrocell environment, modelling the elevation angular characteristics of three-dimensional (3D) channel is critical to understanding the performance limits of the FD-MIMO system. In this paper, we study the throughput performance of FD-MIMO system with varying elevation angular spread and inter-element spacing using a 3D spatial channel model. Our results show that for a typical urban scenario, horizontal beamforming with correlated antenna spacing achieves optimal performance but by restricting the spread of elevation angles of departure, elevation beamforming achieves high array gain with wide inter-element spacing. We also realize significant gains due to spatial array processing via modelling the elevation domain and varying the inter-element spacing for both the transmitter and receiver.

참고문헌 (Reference)

1 Wang, H., "User Fairness Scheme with Proportional Fair Scheduling in Multi-user MIMO Limited Feedback System" 5 : 113-118, 2013

2 조한신, "Transmit-Nulling SDMA for Coexistence with Fixed Wireless Service" 한국전자파학회 11 (11): 34-42, 2011

3 S. K. Yong, "Three-dimensional spatial fading correlation models for compact MIMO receivers" 4 (4): 2856-2869, 2005

4 "TR 36.814, Further advancements for E-UTRA physical layer aspects, V 9.0.0"

5 3GPP, "TR 25.996, Spatial channel model for multiple input multiple output (MIMO) simulations (Rel. 10)"

6 조한신, "Spectrum Sharing SDMA with Limited Feedback: Throughput Analysis" 한국인터넷정보학회 6 (6): 3237-3256, 2012

7 L. Voukko, "Results from 5.3 GHz MIMO Measurement Campaign"

8 A. Kammoun, "Preliminary results on 3D channel modeling: From theory to standardization" 32 (32): 1219-1229, 2014

9 "Overview of 3GPP Release 12 V 0.0.9 (2013-06)"

10 Dorra Ben Cheikh Battikh, "Outage probability formulas for cellular networks : contributions for MIMO, CoMP and time reversal features"

11 Alidu Abubakari, "Optimal Planar Array Architecture for Full-Dimensional Multi-user Multiple-Input Multiple-Output with Elevation Modeling" 한국전자통신연구원 39 (39): 234-244, 2017

12 T. Marzetta, "Noncooperative cellular wireless with unlimited numbers of base station antennas" 9 (9): 3590-3600, 2010

13 F. Boccardi, "Multiuser eigenmode transmission for mimo broadcast channels with limited feedback" 1-5, 2007

14 S. Shen, "MIMO systems with mutual coupling: How many antennas to pack into fixed-length arrays?" 531-536, 2010

15 D. Ying, "Kronecker product correlation model and limited feedback codebook design in a 3D channel model" 5865-5870, 2014

16 J. Zhu, "Investigation on precoding techniques in E-UTRA and proposed adaptive precoding scheme for MIMO systems" 1-5, 2008

17 Y. Song, "Investigation on elevation beamforming for future LTE-Advanced" 106-110, 2013

18 Y. Li, "Implementation of full-dimensional MIMO (FD-MIMO) in LTE" 998-1003, 2013

19 "ITU M.2135, Guidelines for evaluation of radio interface technologies for IMT-Advanced"

20 "Guidelines for evaluation of radio interface technologies for IMT-advanced"

21 Y. H. Nam, "Full-dimension MIMO (FD-MIMO) for next generation cellular technology" 51 (51): 172-179, 2013

22 Y. Kim, "Full dimension mimo (FD-MIMO): the next evolution of MIMO in LTE systems" 21 (21): 26-33, 2014

23 A. Abubakari, "Full dimension MIMO Antenna Configuration for Optimal Performance" 1025-1030, 2015

24 B. L. Ng, "Fulfilling the promise of massive MIMO with 2D active antenna array" 691-696, 2012

25 W. Zhang, "Field Trial and Future Enhancements for TDD Massive MIMO Networks" 1114-1118, 2015

26 Younsun Kim, "Evolution beyond LTE-advanced with Full Dimension MIMO" 111-115, 2013

27 "Ericsson Traffic and Market Report On the Pulse of the Networked Society" 2012

28 D J Love, "Equal gain transmission in multiple-input multiple-output wireless systems" 51 (51): 1102-1110, 2003

29 Y. Wang, "Challenges of System-Level Simulations and Performance Evaluation for 5G Wireless Networks" 2 : 1553-1561, 2014

30 Y. Li, "An Enhanced Beamforming Algorithm for Three Dimensional MIMO in LTE-Advanced Networks" 24-26, 2013

31 Y. Xie, "A limited feedback scheme for 3D multiuser MIMO based on Kronecker product codebook" 1130-1135, 2013

32 D. J. Love, "A closed-loop training approach for massive MIMO beamforming systems" 1-5, 2013

33 G. Calcev, "A Wideband Spatial Channel Model for System-Wide Simulations" 56 (56): 389-403, 2007

34 "3GPP TR 36.873 V12.1.0 (2015-03)"

35 I. Tzanidis, "2D Active Antenna Array Design for FD-MIMO System and Antenna Virtualization Techniques" 2015 : 9-, 2015