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.
Cognitive radio networks have been proposed as a solution to both spectrum inefficiency and spectrum scarcity problems. However, they face to a unique challenge based on the fluctuating nature of heterogeneous spectrum bands as well as the diverse service requirements of various applications. In this paper, a spectrum decision framework is proposed to determine a set of spectrum bands by considering...
This paper deals with the design of CMOS sampling switch for ultra-low power analog-to-digital converters (ADC) in biomedical applications. General switch design constraints are analyzed, among which the voltage droop due to the subthreshold leakage current constitutes the major error source for low-speed sampling circuits. Based on the analyses, a CMOS sampling switch with leakage-reduction has been...
We describe the methodology; the design and the implementation of scheduler block of interconnect. The scheduler block is implemented in Verilog using SYNOPSYS tool's DVE and Design_vision. The interconnect is capable of handling 72 bit packets and a total of 32 packets at a time. There are total 8 devices and we have to establish the communication between them. Each device consists of an input block...
This kind of control systems wherein the control loops are closed through a real time communication network can be called networked control systems. Networked control system is a new hot topic in the control engineering. The reduction of bandwidth necessitated by the communication network in a networked control system is a major concern. For this reason, a computation method of reducing the number...
As researchers continue to architect massive-scale systems, it is becoming clear that these systems will utilize a significant amount of shared hardware between processing units. Systems such as the IBM Blue Gene (BG) and Cray XT have started utilizing flat (i.e., scalable) networks, which differ from switched fabrics in that they use a 3D torus or similar topology. This allows the network to grow...
Software Defined Radio (SDR) allows dynamically changing protocols and functions in order to provide flexible, multiple-standard services to users. A reconfigurable baseband architecture having a set of coarse-grained, heterogeneous execution units is one strategy which can meet this requirement. However, while we can integrate a large number of execution units onto a chip, conventional bus structures...
Multicast is an effective way for increasing the efficiency of network resources utilization. But when designed, MPLS did not consider the support of multicast. So multicast in MPLS has many problems. To solve this, we introduce and propose a new multicast strategy in this paper that combines ERM and AMFM. Compared with the previous multicast algorithms, it simplifies LSP setup and has less forwarding...
To overcome the scalability issue, network-on-chip (NoC) communication architectures have been used in today's system-on-chip. At the same time, more and more applications place increasingly stringent demands on the quality of service for the on-chip communication. Thus it is important to provide guaranteed services to these NoC architectures. We propose a novel solution that maintains the area efficiency...
A Ku band 90deg bit phase shifter with improved switched-line structure was fabricated. In this article, the bandwidth of the proposed phase shifter is much wider than the conventional ones. The proposed phase shifter operates from 14 to 16 GHz with plusmn2deg of phase deviation.
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.