On the energy/spectral efficiency of multi-user full-duplex massive MIMO systems with power control
Abstract In this paper, we consider a multi-user full-duplex (FD) massive multiple-input multiple-output (MIMO) system. The FD base station (BS) is equipped with large-scale antenna arrays, while each FD user is equipped with two antennas (one for transmission and the other one for reception). We as...
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doaj-c2dcad04c21744aa8db29be99d2d624d2020-11-24T21:14:28ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14992017-05-012017111710.1186/s13638-017-0864-9On the energy/spectral efficiency of multi-user full-duplex massive MIMO systems with power controlXiming Wang0Dongmei Zhang1Kui Xu2Wenfeng Ma3Institute of Communication Engineering, PLA University of Science and TechnologyInstitute of Communication Engineering, PLA University of Science and TechnologyInstitute of Communication Engineering, PLA University of Science and TechnologyInstitute of Communication Engineering, PLA University of Science and TechnologyAbstract In this paper, we consider a multi-user full-duplex (FD) massive multiple-input multiple-output (MIMO) system. The FD base station (BS) is equipped with large-scale antenna arrays, while each FD user is equipped with two antennas (one for transmission and the other one for reception). We assume that the channel state information (CSI) is imperfect, and no instantaneous CSI of loop interference (LI) channel is obtained. On the basis of low-complexity uplink beamforming and downlink precoding techniques, i.e. maximum-ratio combining/maximum-ratio transmission (MRC/MRT) and zero-forcing reception/zero-forcing transmission (ZFR/ZFT), the asymptotic expressions of signal-to-interference-plus-noise ratio (SINR) of uplink and downlink are derived respectively when the number of antennas of the BS tends to infinity. Based on the asymptotic SINR expressions, we first analyse the spectral efficiency (SE) performance assuming that the generalized power scaling scenario is adopted. Through the theoretical derivation, it is shown that the detrimental impact of the LI can be eliminated by the very large number of antennas at the BS if the power scaling scenario is appropriately applied, as well as the interference caused by the imperfect channel estimation, the multi-user interference (MUI) and inter-user interference (IUI). Then, we propose power allocation (PA) scenarios to maximize the energy efficiency (EE) and the sum SE with the constraint of maximum powers at the BS and users. The simulation results verify the accuracy of the asymptotic method, we also validate the effectiveness of the EE and the sum SE maximization PA algorithms. We show that adopting the PA scheme to maximize the sum SE can make the multi-user FD massive MIMO system outperform the half-duplex (HD) counterpart regardless of the level of LI.http://link.springer.com/article/10.1186/s13638-017-0864-9Multi-userFull duplexImperfect channel state information (CSI)Maximum-ratio combining/maximum-ratio transmission (MRC/MRT)Zero-forcing reception/zero-forcing transmission (ZFR/ZFT)Power scaling |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ximing Wang Dongmei Zhang Kui Xu Wenfeng Ma |
spellingShingle |
Ximing Wang Dongmei Zhang Kui Xu Wenfeng Ma On the energy/spectral efficiency of multi-user full-duplex massive MIMO systems with power control EURASIP Journal on Wireless Communications and Networking Multi-user Full duplex Imperfect channel state information (CSI) Maximum-ratio combining/maximum-ratio transmission (MRC/MRT) Zero-forcing reception/zero-forcing transmission (ZFR/ZFT) Power scaling |
author_facet |
Ximing Wang Dongmei Zhang Kui Xu Wenfeng Ma |
author_sort |
Ximing Wang |
title |
On the energy/spectral efficiency of multi-user full-duplex massive MIMO systems with power control |
title_short |
On the energy/spectral efficiency of multi-user full-duplex massive MIMO systems with power control |
title_full |
On the energy/spectral efficiency of multi-user full-duplex massive MIMO systems with power control |
title_fullStr |
On the energy/spectral efficiency of multi-user full-duplex massive MIMO systems with power control |
title_full_unstemmed |
On the energy/spectral efficiency of multi-user full-duplex massive MIMO systems with power control |
title_sort |
on the energy/spectral efficiency of multi-user full-duplex massive mimo systems with power control |
publisher |
SpringerOpen |
series |
EURASIP Journal on Wireless Communications and Networking |
issn |
1687-1499 |
publishDate |
2017-05-01 |
description |
Abstract In this paper, we consider a multi-user full-duplex (FD) massive multiple-input multiple-output (MIMO) system. The FD base station (BS) is equipped with large-scale antenna arrays, while each FD user is equipped with two antennas (one for transmission and the other one for reception). We assume that the channel state information (CSI) is imperfect, and no instantaneous CSI of loop interference (LI) channel is obtained. On the basis of low-complexity uplink beamforming and downlink precoding techniques, i.e. maximum-ratio combining/maximum-ratio transmission (MRC/MRT) and zero-forcing reception/zero-forcing transmission (ZFR/ZFT), the asymptotic expressions of signal-to-interference-plus-noise ratio (SINR) of uplink and downlink are derived respectively when the number of antennas of the BS tends to infinity. Based on the asymptotic SINR expressions, we first analyse the spectral efficiency (SE) performance assuming that the generalized power scaling scenario is adopted. Through the theoretical derivation, it is shown that the detrimental impact of the LI can be eliminated by the very large number of antennas at the BS if the power scaling scenario is appropriately applied, as well as the interference caused by the imperfect channel estimation, the multi-user interference (MUI) and inter-user interference (IUI). Then, we propose power allocation (PA) scenarios to maximize the energy efficiency (EE) and the sum SE with the constraint of maximum powers at the BS and users. The simulation results verify the accuracy of the asymptotic method, we also validate the effectiveness of the EE and the sum SE maximization PA algorithms. We show that adopting the PA scheme to maximize the sum SE can make the multi-user FD massive MIMO system outperform the half-duplex (HD) counterpart regardless of the level of LI. |
topic |
Multi-user Full duplex Imperfect channel state information (CSI) Maximum-ratio combining/maximum-ratio transmission (MRC/MRT) Zero-forcing reception/zero-forcing transmission (ZFR/ZFT) Power scaling |
url |
http://link.springer.com/article/10.1186/s13638-017-0864-9 |
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