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Multi-Pair Two-Way Massive MIMO Relaying With Zero Forcing: Energy Efficiency and Power Scaling Laws.
- Source :
-
IEEE Transactions on Communications . Mar2020, Vol. 68 Issue 3, p1417-1431. 15p. - Publication Year :
- 2020
-
Abstract
- In this paper, we study a multi-pair two-way half-duplex decode-and-forward (DF) massive multiple-input multiple-output (MIMO) relaying system, in which multiple single-antenna user pairs can exchange information through a massive MIMO relay. For low-complexity processing, zero-forcing reception/zero-forcing transmission (ZFR/ZFT) is employed at the relay. First, we analytically study the large-scale approximations of the sum spectral efficiency (SE). Furthermore, we focus on three specific power scaling laws to study the trade-off between the transmit powers of each pilot symbol, each user and the relay, and also focus on how the transmit powers scale with the number of relay antennas, $M$ , to maintain a finite SE performance. Additionally, we consider a practical power consumption model to investigate the energy efficiency (EE), and illustrate the impact of $M$ and the interplay between the power scaling laws and the EE performance. Finally, we consider the system fairness via maximizing the minimum achievable SE among all user pairs. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ENERGY consumption
*FORCE & energy
*INFORMATION sharing
*LEGAL education
*FAIRNESS
Subjects
Details
- Language :
- English
- ISSN :
- 00906778
- Volume :
- 68
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Communications
- Publication Type :
- Academic Journal
- Accession number :
- 143315989
- Full Text :
- https://doi.org/10.1109/TCOMM.2019.2959329