分布式无线通信系统(Distributed Wireless Communication System,DWCS)是近几年提出的一种新型无线通信体系结构,系统采用网络无线电技术,信号处理和控制模块均在PC工作站中完成。本文结合软件无线电相关技术,研究PC工作站在DWCS基站...分布式无线通信系统(Distributed Wireless Communication System,DWCS)是近几年提出的一种新型无线通信体系结构,系统采用网络无线电技术,信号处理和控制模块均在PC工作站中完成。本文结合软件无线电相关技术,研究PC工作站在DWCS基站中的应用。本文将详细分析软基站设计及实现的关键问题,并给出软基站系统的实测性能。展开更多
This paper reviews the requirements for Software Defi ned Radio (SDR) systems for high-speed wireless applications and compares how well the different technology choices available-from ASICs, FPGAs to digital signal p...This paper reviews the requirements for Software Defi ned Radio (SDR) systems for high-speed wireless applications and compares how well the different technology choices available-from ASICs, FPGAs to digital signal processors (DSPs) and general purpose processors (GPPs) - meet them.展开更多
The Internet of Radio-Light(IoRL)is a cutting-edge system paradigm to enable seamless 5G service provision in indoor environments,such as homes,hospitals,and museums.The system draws on innovative architectural struct...The Internet of Radio-Light(IoRL)is a cutting-edge system paradigm to enable seamless 5G service provision in indoor environments,such as homes,hospitals,and museums.The system draws on innovative architectural structure that sits on the synergy between the Radio Access Network(RAN)technologies of millimeter Wave communications(mmWave)and Visible Light Communications(VLC)for improving network throughput,latency,and coverage compared to existing efforts.The aim of this paper is to introduce the IoRL system architecture and present the key technologies and techniques utilised at each layer of the system.Special emphasis is given in detailing the IoRL physical layer(Layer 1)and Medium Access Control layer(MAC,Layer 2)by means of describing their unique design characteristics and interfaces as well as the robust IoRL methods of improving the estimation accuracy of user positioning relying on uplink mmWave and downlink VLC measurements.展开更多
Wireless local area network(WLAN) is an indivisible part of the next generation wireless system. In this paper, an open Wi-Fi platform is designed and developed with special consideration of real-time signal processin...Wireless local area network(WLAN) is an indivisible part of the next generation wireless system. In this paper, an open Wi-Fi platform is designed and developed with special consideration of real-time signal processing. Such system can help accelerate research and development of future wireless network, especially in the case of cellular/Wi-Fi co-existing networks. This platform is based on the Intel general-purpose processor and the universal software radio peripheral(USRP) radio front end. The design including the physical layer implementations is purely software and is optimized for real-time signal processing on the general purpose processor. In the lab experiment, this platform supports baseband rate up to 700 Mbps with 2 transmitters in 80 MHz bandwidth. A cellular-Wi-Fi signaling interface between the Wi-Fi access point(AP) and the 5G core network is also developed and validated as an example for wireless resource allocation.展开更多
Usefulness of sensor network applications in human life is increasing day by day and the concept of wireless connection promises new application areas. Sensor network can be very beneficial in saving human life from t...Usefulness of sensor network applications in human life is increasing day by day and the concept of wireless connection promises new application areas. Sensor network can be very beneficial in saving human life from terrorist attacks causing explosion in certain areas leading to casualties. But realization of the sensor network application in explosive detection requires high scalability of the sensor network and fast transmission of the information through real time monitoring and control. In this paper a novel mechanism for explosive trace detection in any populated area by the use of mobile telephony has been described. The aim is to create a system that will assure common men, local population and above all the nation a secured environment, without disturbing their freedom of movement. It would further help the police in detection of explosives more quickly, isolation of suicide bombers, remediation of explosives manufacturing sites, and forensic and criminal investigation. To achieve this, the paper has projected an idea that can combine the strength of the mobile phones, the polymer sensor and existing cellular network. The idea is to design and embed a tiny cog-nitive radio sensor node into the mobile phone that adapts to the changing environment by analyzing the RF surroundings and adjusting the spectrum use appropriately. The system would be capable of detecting explo-sives within a defined territory. It would communicate the location of the detected explosives to the respec-tive service provider, which in turn would inform the law and enforcement agency or Police.展开更多
探讨软件定义网络(Software Defined Network,SDN)技术在广播电视播控网络智能化改造中的应用。分析智能化改造的业务、技术和经济需求,指出传统网络架构在面临媒体形态多样化和观众需求个性化时的局限性。阐述SDN技术在网络架构优化、...探讨软件定义网络(Software Defined Network,SDN)技术在广播电视播控网络智能化改造中的应用。分析智能化改造的业务、技术和经济需求,指出传统网络架构在面临媒体形态多样化和观众需求个性化时的局限性。阐述SDN技术在网络架构优化、动态资源分配、流量工程优化、安全保障强化以及开放接口与生态系统构建等方面的应用策略。通过引入SDN技术,广播电视播控网络能够实现更高效、灵活和安全的运行,满足不断增长的业务需求,降低运营成本,推动行业的数字化转型和升级。展开更多
文摘分布式无线通信系统(Distributed Wireless Communication System,DWCS)是近几年提出的一种新型无线通信体系结构,系统采用网络无线电技术,信号处理和控制模块均在PC工作站中完成。本文结合软件无线电相关技术,研究PC工作站在DWCS基站中的应用。本文将详细分析软基站设计及实现的关键问题,并给出软基站系统的实测性能。
文摘This paper reviews the requirements for Software Defi ned Radio (SDR) systems for high-speed wireless applications and compares how well the different technology choices available-from ASICs, FPGAs to digital signal processors (DSPs) and general purpose processors (GPPs) - meet them.
基金This work was supported by the National Key R&D Program of China(No.2017YFE011230)the EU Horizon 2020 Project(No.761992).
文摘The Internet of Radio-Light(IoRL)is a cutting-edge system paradigm to enable seamless 5G service provision in indoor environments,such as homes,hospitals,and museums.The system draws on innovative architectural structure that sits on the synergy between the Radio Access Network(RAN)technologies of millimeter Wave communications(mmWave)and Visible Light Communications(VLC)for improving network throughput,latency,and coverage compared to existing efforts.The aim of this paper is to introduce the IoRL system architecture and present the key technologies and techniques utilised at each layer of the system.Special emphasis is given in detailing the IoRL physical layer(Layer 1)and Medium Access Control layer(MAC,Layer 2)by means of describing their unique design characteristics and interfaces as well as the robust IoRL methods of improving the estimation accuracy of user positioning relying on uplink mmWave and downlink VLC measurements.
基金supported in part by the National Natural Science Foundation of China under Grant No. 61671436the Science and Technology Commission Foundation of Shanghai under Grant No. 15511102602, 16511104204
文摘Wireless local area network(WLAN) is an indivisible part of the next generation wireless system. In this paper, an open Wi-Fi platform is designed and developed with special consideration of real-time signal processing. Such system can help accelerate research and development of future wireless network, especially in the case of cellular/Wi-Fi co-existing networks. This platform is based on the Intel general-purpose processor and the universal software radio peripheral(USRP) radio front end. The design including the physical layer implementations is purely software and is optimized for real-time signal processing on the general purpose processor. In the lab experiment, this platform supports baseband rate up to 700 Mbps with 2 transmitters in 80 MHz bandwidth. A cellular-Wi-Fi signaling interface between the Wi-Fi access point(AP) and the 5G core network is also developed and validated as an example for wireless resource allocation.
文摘Usefulness of sensor network applications in human life is increasing day by day and the concept of wireless connection promises new application areas. Sensor network can be very beneficial in saving human life from terrorist attacks causing explosion in certain areas leading to casualties. But realization of the sensor network application in explosive detection requires high scalability of the sensor network and fast transmission of the information through real time monitoring and control. In this paper a novel mechanism for explosive trace detection in any populated area by the use of mobile telephony has been described. The aim is to create a system that will assure common men, local population and above all the nation a secured environment, without disturbing their freedom of movement. It would further help the police in detection of explosives more quickly, isolation of suicide bombers, remediation of explosives manufacturing sites, and forensic and criminal investigation. To achieve this, the paper has projected an idea that can combine the strength of the mobile phones, the polymer sensor and existing cellular network. The idea is to design and embed a tiny cog-nitive radio sensor node into the mobile phone that adapts to the changing environment by analyzing the RF surroundings and adjusting the spectrum use appropriately. The system would be capable of detecting explo-sives within a defined territory. It would communicate the location of the detected explosives to the respec-tive service provider, which in turn would inform the law and enforcement agency or Police.
文摘探讨软件定义网络(Software Defined Network,SDN)技术在广播电视播控网络智能化改造中的应用。分析智能化改造的业务、技术和经济需求,指出传统网络架构在面临媒体形态多样化和观众需求个性化时的局限性。阐述SDN技术在网络架构优化、动态资源分配、流量工程优化、安全保障强化以及开放接口与生态系统构建等方面的应用策略。通过引入SDN技术,广播电视播控网络能够实现更高效、灵活和安全的运行,满足不断增长的业务需求,降低运营成本,推动行业的数字化转型和升级。
