Serving multiple cell-edge mobile terminals poses multifaceted challenges due to the increased transmission power and interferences, which could be overcome by relay communications. With the recent advancement of 5G t...Serving multiple cell-edge mobile terminals poses multifaceted challenges due to the increased transmission power and interferences, which could be overcome by relay communications. With the recent advancement of 5G technologies, non-orthogonal multiple access(NOMA) has been used at relay node to transmit multiple messages simultaneously to multiple cell-edge users. In this paper, a Collaborative NOMA Assisted Relaying(CNAR) system for 5G is proposed by enabling the collaboration of source-relay(S-R) and relay-destination(R-D) NOMA links. The relay node of the CNAR decodes the message for itself from S-R NOMA signal and transmits the remaining messages to the multiple cell-edge users in R-D link. A simplified-CNAR(S-CNAR) system is then developed to reduce the relay complexity. The outage probabilities for both systems are analyzed by considering outage behaviors in S-R and R-D links separately. To guarantee the data rate, the optimal power allocation among NOMA users is achieved by minimizing the outage probability. The ergodic sum capacity in high SNR regime is also approximated. Our mathematical analysis and simulation results show that CNAR system outperforms existing transmission strategies and S-CNAR reaches similar performance with much lower complexity.展开更多
Massive MIMO is one of the key technologies in future 5G communications which can satisfy the requirement of high speed and large capacity. This paper considers antenna selection and power allocation design to promote...Massive MIMO is one of the key technologies in future 5G communications which can satisfy the requirement of high speed and large capacity. This paper considers antenna selection and power allocation design to promote energy conservation then provide good quality of service(QoS) for the whole massive MIMO uplink network. Unlike previous related works, hardware impairment, transmission efficiency, and energy consumption at the circuit and antennas are involved in massive MIMO networks. In order to ensure the QoS, we consider the minimum rate constraint for each user and the system, which increases the complexity of power allocation problem for maximizing energy and spectral efficiency in massive MIMO system. To this end, a quantum-inspired social emotional optimization(QSEO) algorithm is proposed to obtain the optimal power control strategy in massive MIMO uplink networks. Simulation results assess the great advantages of QSEO which previous strategies do not have.展开更多
随着电力市场的不断发展,电力终端接入规模不断扩大,分布式新能源采集调控策略成为重要的研究热点。通过使用工作于免许可频段的5G空中接口(5G new radio in unlicensed spectrum,5G NR-U)技术可以建立安全、低成本、自主可控的电力无...随着电力市场的不断发展,电力终端接入规模不断扩大,分布式新能源采集调控策略成为重要的研究热点。通过使用工作于免许可频段的5G空中接口(5G new radio in unlicensed spectrum,5G NR-U)技术可以建立安全、低成本、自主可控的电力无线专网,为实现智能电网中分布式新能源采集调控业务应用提供安全、高速、灵活的平台。文章提出一种基于5G NR-U电力专网的分布式新能源采集调控策略,研究微电网群中的分布式光伏发电新能源信息共享与资源调控,并使用Stackelberg博弈算法求解最优调控策略。仿真结果表明,该调控策略能够显著提高微电网群的消纳能力,提高微电网运行稳定性和安全性。展开更多
针对目前电力巡检机器人在室内环境中存在的三维定位成本高、精度低的问题,文章利用5G信号特征和多信号分类(multiple signal classification,MUSIC)算法,提出面向电力巡检的5G室内三维指纹定位算法。首先构建三维信道模型,以降低多径...针对目前电力巡检机器人在室内环境中存在的三维定位成本高、精度低的问题,文章利用5G信号特征和多信号分类(multiple signal classification,MUSIC)算法,提出面向电力巡检的5G室内三维指纹定位算法。首先构建三维信道模型,以降低多径干扰导致的定位信号参数偏差;其次提出多径定位信号优化算法,以克服随机噪声导致的定位信号相位偏移问题,以此降低定位决策的软硬件成本。仿真结果表明,本算法在三维室内定位精度和定位成本方面实现了较好的性能与平衡。展开更多
随着第五代移动通信(5th generation mobile communication,5G)基站建设数量的剧增,5G基站的备用电池将是一个具有巨大潜能的储能资源。我国电力市场化改革正不断推进,研究5G基站的备用储能参与电力市场交易是实现电网和通信运营商互利...随着第五代移动通信(5th generation mobile communication,5G)基站建设数量的剧增,5G基站的备用电池将是一个具有巨大潜能的储能资源。我国电力市场化改革正不断推进,研究5G基站的备用储能参与电力市场交易是实现电网和通信运营商互利共赢的有效途径。考虑到5G基站备用储能参与电力市场的特殊性,建立了计及退化成本和可调度容量的基站储能电池模型,并将零散的基站聚合成5G基站虚拟电厂(virtual power plant,VPP)。然后,将5G基站VPP作为独立的竞价主体,构建双层的电能量-调频辅助服务市场交易决策模型,并利用KKT(Karush-Kuhn-Tucker)条件和对偶理论将双层模型转化为可解的混合整数规划问题。最后,通过算例评估了5G基站备用储能的可调度容量以及所提交易决策模型的有效性。展开更多
常规的电厂电气设备智能巡检系统增加了大量的运算,影响巡检系统的运行效果。因此,设计了基于第五代移动通信技术(5th Generation Mobile Communication Technology,5G)的电厂电气设备智能巡检系统。通过5G网络采集巡检设备的运行状态数...常规的电厂电气设备智能巡检系统增加了大量的运算,影响巡检系统的运行效果。因此,设计了基于第五代移动通信技术(5th Generation Mobile Communication Technology,5G)的电厂电气设备智能巡检系统。通过5G网络采集巡检设备的运行状态数据,将数据传输到远程监控中心,确保巡检性能。该系统将电气设备巡检数据存储到数据库中,以确保巡检数据的安全。文章采用系统测试,验证了该系统的运行性能更佳。展开更多
文摘Serving multiple cell-edge mobile terminals poses multifaceted challenges due to the increased transmission power and interferences, which could be overcome by relay communications. With the recent advancement of 5G technologies, non-orthogonal multiple access(NOMA) has been used at relay node to transmit multiple messages simultaneously to multiple cell-edge users. In this paper, a Collaborative NOMA Assisted Relaying(CNAR) system for 5G is proposed by enabling the collaboration of source-relay(S-R) and relay-destination(R-D) NOMA links. The relay node of the CNAR decodes the message for itself from S-R NOMA signal and transmits the remaining messages to the multiple cell-edge users in R-D link. A simplified-CNAR(S-CNAR) system is then developed to reduce the relay complexity. The outage probabilities for both systems are analyzed by considering outage behaviors in S-R and R-D links separately. To guarantee the data rate, the optimal power allocation among NOMA users is achieved by minimizing the outage probability. The ergodic sum capacity in high SNR regime is also approximated. Our mathematical analysis and simulation results show that CNAR system outperforms existing transmission strategies and S-CNAR reaches similar performance with much lower complexity.
基金supported by the National Natural Science Foundation of China (No. 61571149)the Special China Postdoctoral Science Foundation (2015T80325)+1 种基金the Fun-damental Research Funds for the Central Universities (HEUCFP201808)the China Postdoctoral Science Foundation (2013M530148)
文摘Massive MIMO is one of the key technologies in future 5G communications which can satisfy the requirement of high speed and large capacity. This paper considers antenna selection and power allocation design to promote energy conservation then provide good quality of service(QoS) for the whole massive MIMO uplink network. Unlike previous related works, hardware impairment, transmission efficiency, and energy consumption at the circuit and antennas are involved in massive MIMO networks. In order to ensure the QoS, we consider the minimum rate constraint for each user and the system, which increases the complexity of power allocation problem for maximizing energy and spectral efficiency in massive MIMO system. To this end, a quantum-inspired social emotional optimization(QSEO) algorithm is proposed to obtain the optimal power control strategy in massive MIMO uplink networks. Simulation results assess the great advantages of QSEO which previous strategies do not have.
文摘随着电力市场的不断发展,电力终端接入规模不断扩大,分布式新能源采集调控策略成为重要的研究热点。通过使用工作于免许可频段的5G空中接口(5G new radio in unlicensed spectrum,5G NR-U)技术可以建立安全、低成本、自主可控的电力无线专网,为实现智能电网中分布式新能源采集调控业务应用提供安全、高速、灵活的平台。文章提出一种基于5G NR-U电力专网的分布式新能源采集调控策略,研究微电网群中的分布式光伏发电新能源信息共享与资源调控,并使用Stackelberg博弈算法求解最优调控策略。仿真结果表明,该调控策略能够显著提高微电网群的消纳能力,提高微电网运行稳定性和安全性。
文摘针对目前电力巡检机器人在室内环境中存在的三维定位成本高、精度低的问题,文章利用5G信号特征和多信号分类(multiple signal classification,MUSIC)算法,提出面向电力巡检的5G室内三维指纹定位算法。首先构建三维信道模型,以降低多径干扰导致的定位信号参数偏差;其次提出多径定位信号优化算法,以克服随机噪声导致的定位信号相位偏移问题,以此降低定位决策的软硬件成本。仿真结果表明,本算法在三维室内定位精度和定位成本方面实现了较好的性能与平衡。
文摘随着第五代移动通信(5th generation mobile communication,5G)基站建设数量的剧增,5G基站的备用电池将是一个具有巨大潜能的储能资源。我国电力市场化改革正不断推进,研究5G基站的备用储能参与电力市场交易是实现电网和通信运营商互利共赢的有效途径。考虑到5G基站备用储能参与电力市场的特殊性,建立了计及退化成本和可调度容量的基站储能电池模型,并将零散的基站聚合成5G基站虚拟电厂(virtual power plant,VPP)。然后,将5G基站VPP作为独立的竞价主体,构建双层的电能量-调频辅助服务市场交易决策模型,并利用KKT(Karush-Kuhn-Tucker)条件和对偶理论将双层模型转化为可解的混合整数规划问题。最后,通过算例评估了5G基站备用储能的可调度容量以及所提交易决策模型的有效性。
文摘常规的电厂电气设备智能巡检系统增加了大量的运算,影响巡检系统的运行效果。因此,设计了基于第五代移动通信技术(5th Generation Mobile Communication Technology,5G)的电厂电气设备智能巡检系统。通过5G网络采集巡检设备的运行状态数据,将数据传输到远程监控中心,确保巡检性能。该系统将电气设备巡检数据存储到数据库中,以确保巡检数据的安全。文章采用系统测试,验证了该系统的运行性能更佳。