Abstract
A sectorization method using the uniform circular array (UCA) is proposed to improve the net spectral efficiency (SE) of the multicell massive MIMO system, which is an important index for evaluating the performance of a communication system. We derive the ergodic achievable uplink net SE per cell of a general sectorized system and obtain its deterministic approximation based on the large random matrix theory. Different weight matrices are considered for the sectorized system and the one with the best performance is utilized for further analysis. The consistency of the deterministic approximation with the result of Monte-Carlo simulation is proved at the same time. At last, numerical results indicate that the net SE per cell can be greatly improved compared to the conventional multicell massive MIMO system, which validates the effectiveness of the sectorization method. Moreover, comparisons with other pilot reuse methods are also made in this paper.
创新点
本文研究了采用均匀圆形阵列的大规模MIMO系统,并在该场景下提出了一种基于扇区化技术的导频重用策略,该策略可以大大提升多小区大规模MIMO系统净频谱效率。此外,文章基于大规模随机矩阵理论,推导得到了一般性扇区化多小区系统上行可达频谱效率确定性近似表达式,并通过数值仿真验证了该表达式的准确性,其意义在于可以广泛应用于此类型场景下的系统设计以及优化,同时节省了蒙特卡洛仿真所花费的大量时间。
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References
Rusek F, Persson D, Lau B K, et al. Scaling up MIMO: opportunities and challenges with very large arrays. IEEE Signal Process Mag, 2013, 30: 40–60
Larsson E, Edfors O, Tufvesson F, et al. Massive MIMO for next generation wireless systems. IEEE Commun Mag, 2014, 52: 186–195
Marzetta T L. Noncooperative cellular wireless with unlimited numbers of base station antennas. IEEE Trans Wirel Commun, 2010, 9: 3590–3600
Marzetta T L. Massive MIMO: an introduction. Bell Labs Tech J, 2015, 20: 11–22
You L, Gao X Q, Xia X G, et al. Pilot reuse for massive MIMO transmission over spatially correlated rayleigh fading channels. IEEE Trans Wirel Commun, 2015, 14: 3352–3366
He Q, Xiao L M, Zhong X F, et al. Increasing the sum-throughput of cells with a sectorization method for massive MIMO. IEEE Commun Lett, 2014, 18: 1827–1830
Li J H, He Q, Xiao L M, et al. Uplink Sum-throughput evaluation of sectorized multi-cell massive MIMO system. In: Proceedings of IEEE International Conference on Communication Workshop (ICCW), London, 2015. 1143–1148
Hoydis J, Ten Brink S, Debbah M. Massive MIMO in the UL/DL of cellular networks: how many antennas do we need?. IEEE J Sel Areas Commun, 2013, 31: 160–171
Nam J, Adhikary A, Ahn J Y, et al. Joint spatial division and multiplexing: opportunistic beamforming, user grouping and simplified downlink scheduling. IEEE J Sel Topics Signal Process, 2014, 8: 876–890
Yin H F, Gesbert D, Filippou M, et al. A coordinated approach to channel estimation in large-scale multiple-antenna systems. IEEE J Sel Areas Commun, 2013, 31: 264–273
Alrabadi O N, Tsakalaki E, Huang H, et al. Beamforming via large and dense antenna arrays above a clutter. IEEE J Sel Areas Commun, 2013, 31: 314–325
Hassibi B, Hochwald B M. How much training is needed in multiple-antenna wireless links? IEEE Trans Inf Theory, 2003, 49: 951–963
Wagner S, Couillet R, Debbah M, et al. Large system analysis of linear precoding in correlated MISO broadcast channels under limited feedback. IEEE Trans Inf Theory, 2012, 58: 4509–4537
Xu Y, Yue G, Prasad N, et al. User grouping and scheduling for large scale MIMO systems with two-stage precoding. In: Proceedings of the IEEE International Conference on Communication (ICC), Sydney, 2014. 5197–5202
Silverstein J W, Bai Z D. On the empirical distribution of eigenvalues of a class of large dimensional random matrices. J Multivariate Anal, 1995, 54: 175–192
Couillet R, Debbah M. Random Matrix Methods for Wireless Communications. Cambridge: Cambridge University Press, 2011. 48–49, 352–353
Bai Z, Silverstein J W. Spectral Analysis of Large Dimensional Random Matrices. New York: Springer, 2010. 530
Hoydis J. Random matrix methods for advanced communication systems. Dissertation for Ph.D. degree. France: Supélec, 2012. 18
van der Vaart A W. Asymptotic Statistics (Cambridge Series in Statistical and Probabilistic Mathematics). Cambridge: Cambridge University Press, 2000. 7–8
Billingsley P. Probability and Measure. Hoboken: John Wiley & Sons. 1995. 209–210
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Li, J., Xiao, L., Xu, X. et al. Sectorization based pilot reuse for improving net spectral efficiency in the multicell massive MIMO system. Sci. China Inf. Sci. 59, 1–15 (2016). https://doi.org/10.1007/s11432-015-5503-7
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DOI: https://doi.org/10.1007/s11432-015-5503-7