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1796-2021 (Online); 2374-4367 (Print)
Prof. Maode Ma
Prof. Jalel Ben-Othman, Prof. Nobuo Funabiki
Prof. Jason Z. Kang
or comments to
Assoc. Prof. Maode Ma
School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore
I'm very happy and honored to take on the position of editor-in-chief of JCM, which is a high-quality journal with potential and I'll try my every effort to bring JCM to a next level...
Welcome Prof. Abdelhalim Zekry from Egypt to join the Editorial board of JCM.
Volume 15, No. 6 have both been indexed by Scopus.
Volume 15, No. 7 has been published online!
Volume 12, No. 2, February 2017
A Pilot Assignment Scheme for Single-Cell Massive MIMO Circumstances
Pengxiang Li, Yuehong Gao, Zhidu Li, Xin Zhang, and Dacheng Yang
Wireless Theories and Technologies Lab, Beijing University of Posts and Telecommunications, Beijing 100876, China
—In Time-Division Duplex (TDD) massive Multiple-Input Multiple-Output (MIMO) systems, pilot contamination becomes the performance bottleneck when the number of terminals is larger than that of available pilot sequences. In this paper, we first deduce the general formulas for uplink Signal-to-Interference Ratio (SIR) and channel capacity in single-cell massive MIMO circumstances with insufficient pilot sequences. Then, in order to enhance the Quality of Service (QoS) for the terminals who suffer from severe pilot contamination, an optimization problem is formulated to maximize the minimum uplink capacity of all terminals. Next, because the complexity of finding the optimal pilot assignment is too high, a suboptimal two-step assignment approach with low complexity is proposed to solve the optimization problem. Compared with the random pilot assignment scheme in single-cell massive MIMO systems, simulation results prove the effectiveness of this two-step scheme in obtaining better minimum uplink SIR and minimum channel capacity when the number of BS antennas is great but finite. Meanwhile, the average capacity of all terminals can also be improved.
—Pilot assignment scheme, single-cell massive MIMO, pilot contamination, performance analysis
Cite: Pengxiang Li, Yuehong Gao, Zhidu Li, Xin Zhang, and Dacheng Yang, "A Pilot Assignment Scheme for Single-Cell Massive MIMO Circumstances," Journal of Communications, vol. 12, no. 2, pp. 91-97, 2017. Doi: 10.12720/jcm.12.2.91-97
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