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具有硬件损伤的无线能量收集双向中继网络

Wireless Energy Harvesting Two-Way Relay Networks with Hardware Impairments.

作者信息

Peng Chunling, Li Fangwei, Liu Huaping

机构信息

Chongqing Key Lab of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China.

School of Electrical Engineering and Computer Science, Oregon State University Corvallis, OR 97331, USA.

出版信息

Sensors (Basel). 2017 Nov 13;17(11):2604. doi: 10.3390/s17112604.

DOI:10.3390/s17112604
PMID:29137175
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5712985/
Abstract

This paper considers a wireless energy harvesting two-way relay (TWR) network where the relay has energy-harvesting abilities and the effects of practical hardware impairments are taken into consideration. In particular, power splitting (PS) receiver is adopted at relay to harvests the power it needs for relaying the information between the source nodes from the signals transmitted by the source nodes, and hardware impairments is assumed suffered by each node. We analyze the effect of hardware impairments [-20]on both decode-and-forward (DF) relaying and amplify-and-forward (AF) relaying networks. By utilizing the obtained new expressions of signal-to-noise-plus-distortion ratios, the exact analytical expressions of the achievable sum rate and ergodic capacities for both DF and AF relaying protocols are derived. Additionally, the optimal power splitting (OPS) ratio that maximizes the instantaneous achievable sum rate is formulated and solved for both protocols. The performances of DF and AF protocols are evaluated via numerical results, which also show the effects of various network parameters on the system performance and on the OPS ratio design.

摘要

本文考虑了一个无线能量收集双向中继（TWR）网络，其中中继具有能量收集能力，并考虑了实际硬件损伤的影响。具体而言，中继采用功率分配（PS）接收器，从源节点发送的信号中收集其在源节点之间中继信息所需的功率，并且假设每个节点都遭受硬件损伤。我们分析了硬件损伤对解码转发（DF）中继和放大转发（AF）中继网络的影响。通过利用获得的信噪加失真比的新表达式，推导了DF和AF中继协议可实现的和速率及遍历容量的精确解析表达式。此外，针对这两种协议，制定并求解了使瞬时可实现和速率最大化的最优功率分配（OPS）比。通过数值结果评估了DF和AF协议的性能，这些结果还展示了各种网络参数对系统性能和OPS比设计的影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/8c9f45fed82c/sensors-17-02604-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/acf74ad66be1/sensors-17-02604-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/8a48a0e8c36c/sensors-17-02604-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/4f71f2b2828f/sensors-17-02604-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/b9fc25a07bf2/sensors-17-02604-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/40dc8884fb0c/sensors-17-02604-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/820a50491ccd/sensors-17-02604-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/3d2884301c80/sensors-17-02604-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/57d723488ceb/sensors-17-02604-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/8c9f45fed82c/sensors-17-02604-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/acf74ad66be1/sensors-17-02604-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/8a48a0e8c36c/sensors-17-02604-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/4f71f2b2828f/sensors-17-02604-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/b9fc25a07bf2/sensors-17-02604-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/40dc8884fb0c/sensors-17-02604-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/820a50491ccd/sensors-17-02604-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/3d2884301c80/sensors-17-02604-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/57d723488ceb/sensors-17-02604-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee53/5712985/8c9f45fed82c/sensors-17-02604-g011.jpg

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