The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Reciprocity calibration is one of the major practical challenges for massive multi-input multi-output (MIMO) systems operating in Time-Division Duplexing (TDD) mode. A new reciprocity calibration method is studied in this paper which can increase the system performance and also support online calibration. Firstly, a test device (TD) is used to send pilots to the base station (BS) to obtain the uplink...
Delay Tolerant Network (DTN) shows some features like link frequent interruptions, long delays, limited resources and so on, while nodes fight each other to win the network resources in the process of communication, which can lead to network congestion in delay tolerant network. Therefore, congestion control is a key issue in delay tolerant network research. The present congestion control strategies...
The development of the Internet and telecommunication urges researchers to look for a better way to secure online users' private information. This study is rooted in online user account protection, measuring the effect of QR codes on fear appeals and authentication protection. This study contributes to the extant literature by integrating two theories — protection motivation theory and the theory...
With the fast development of transport technology and the constantly increasing Internet traffic, the multi-stage switching fabric will be the next step for scalable routers in next generation network. Nevertheless, current memory-space-memory (MSM) Clos switching fabric exhibits poor performance under unbalanced traffic. By taking buffers into the internal links of switching fabric, this paper proposes...
Current Memory-Space-Memory Clos switching fabric exhibits poor performance under unbalanced traffic. To eliminate the internal congestion within the switching fabric, by taking buffers into the internal links, this paper proposes an alternative Fully Buffered three-stage Clos switching fabric-FBC, which not only provides perfect throughput performance, but also exhibits better delay performance in...
The Intelligent Accountability Middleware Architecture (Llama) project supports dependable service-oriented architecture (SOA) monitoring, runtime diagnosis, and reconfiguration. At its core, Llama implements an accountability service bus that users can install on existing service-deployment infrastructures. It collects and monitors service execution data from a key subset of services; enables Llama...
Multi-domain environments where distributed multiple organizations interoperate with each other are becoming a reality as witnessed by emerging Internet-based enterprise applications. Ensuring secure interoperation in such multi-domain environments has drawn considerable research works in the past, especially in tightly coupled, federated environments. However, methods applied to such environments...
With the continuous advances in optical communications technology, the link transmission speed of Internet backbone has been increasing rapidly. This in turn demands more powerful IP address lookup engine. In this paper, we propose a power-efficient parallel TCAM-based lookup engine with a distributed logical caching scheme for dynamic load-balancing. In order to distribute the lookup requests among...
The privacy issue for QoS Web services is considered. As more Web services are constructed and deployed, many of our personal needs may be served by more than one service providers regardless of their platforms and implementation technologies. Service selection is performed by comparing the QoS attributes of all candidate services. Releasing private data without due control may raise the risk of allowing...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.