Performance Analysis of Energy Beamforming WPCN Links With Channel Estimation Errors
In this paper, we analyze the performance of a wireless-powered communication network that consists of a multiple-antenna hybrid access point (AP) and a single-antenna user. The AP transmits radio frequency (RF) power in the downlink (DL) using maximal ratio transmission (MRT) type energy beamformin...
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doaj-59f22c0ff9c74d5dab99b27be05ff11b2021-03-29T18:58:01ZengIEEEIEEE Open Journal of the Communications Society2644-125X2020-01-0111153117010.1109/OJCOMS.2020.30101699146354Performance Analysis of Energy Beamforming WPCN Links With Channel Estimation ErrorsDanyang Wang0https://orcid.org/0000-0002-2933-6216Chintha Tellambura1https://orcid.org/0000-0002-9419-7195Department of Electrical and Computer Engineering, University of Alberta, Edmonton, CanadaDepartment of Electrical and Computer Engineering, University of Alberta, Edmonton, CanadaIn this paper, we analyze the performance of a wireless-powered communication network that consists of a multiple-antenna hybrid access point (AP) and a single-antenna user. The AP transmits radio frequency (RF) power in the downlink (DL) using maximal ratio transmission (MRT) type energy beamforming. The user harvests it and transmits data to the AP in the uplink (UL), which is received with maximal ratio combining (MRC). Previous analyses have assumed the availability of perfect channel estimation. In contrast, we eliminate this unrealistic assumption and consider the effect of imperfect channel estimates. We first derive the distributions of the received AP signal-to-noise ratio (SNR). We then analyze the average throughput performance of delay-limited and delay-tolerant modes by evaluating the outage probability (OP) and ergodic capacity (EC). We also derive the exact bit error rates (BERs) and symbol error rates (SERs) of several digital modulations. Asymptotic performance expressions in the high SNR regime and the large antenna regime are also developed. Finally, analytical and asymptotic results are validated by Monte-Carlo simulations. The impacts of the transmit power, the energy harvesting (EH) time, the number of antennas and the efficiency of EH are investigated.https://ieeexplore.ieee.org/document/9146354/Channel estimation errorsenergy harvestingaverage throughputoutage probabilityergodic capacitysymbol error rate |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Danyang Wang Chintha Tellambura |
spellingShingle |
Danyang Wang Chintha Tellambura Performance Analysis of Energy Beamforming WPCN Links With Channel Estimation Errors IEEE Open Journal of the Communications Society Channel estimation errors energy harvesting average throughput outage probability ergodic capacity symbol error rate |
author_facet |
Danyang Wang Chintha Tellambura |
author_sort |
Danyang Wang |
title |
Performance Analysis of Energy Beamforming WPCN Links With Channel Estimation Errors |
title_short |
Performance Analysis of Energy Beamforming WPCN Links With Channel Estimation Errors |
title_full |
Performance Analysis of Energy Beamforming WPCN Links With Channel Estimation Errors |
title_fullStr |
Performance Analysis of Energy Beamforming WPCN Links With Channel Estimation Errors |
title_full_unstemmed |
Performance Analysis of Energy Beamforming WPCN Links With Channel Estimation Errors |
title_sort |
performance analysis of energy beamforming wpcn links with channel estimation errors |
publisher |
IEEE |
series |
IEEE Open Journal of the Communications Society |
issn |
2644-125X |
publishDate |
2020-01-01 |
description |
In this paper, we analyze the performance of a wireless-powered communication network that consists of a multiple-antenna hybrid access point (AP) and a single-antenna user. The AP transmits radio frequency (RF) power in the downlink (DL) using maximal ratio transmission (MRT) type energy beamforming. The user harvests it and transmits data to the AP in the uplink (UL), which is received with maximal ratio combining (MRC). Previous analyses have assumed the availability of perfect channel estimation. In contrast, we eliminate this unrealistic assumption and consider the effect of imperfect channel estimates. We first derive the distributions of the received AP signal-to-noise ratio (SNR). We then analyze the average throughput performance of delay-limited and delay-tolerant modes by evaluating the outage probability (OP) and ergodic capacity (EC). We also derive the exact bit error rates (BERs) and symbol error rates (SERs) of several digital modulations. Asymptotic performance expressions in the high SNR regime and the large antenna regime are also developed. Finally, analytical and asymptotic results are validated by Monte-Carlo simulations. The impacts of the transmit power, the energy harvesting (EH) time, the number of antennas and the efficiency of EH are investigated. |
topic |
Channel estimation errors energy harvesting average throughput outage probability ergodic capacity symbol error rate |
url |
https://ieeexplore.ieee.org/document/9146354/ |
work_keys_str_mv |
AT danyangwang performanceanalysisofenergybeamformingwpcnlinkswithchannelestimationerrors AT chinthatellambura performanceanalysisofenergybeamformingwpcnlinkswithchannelestimationerrors |
_version_ |
1724196136808349696 |