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.
Wireless network virtualization and energy harvesting are two major candidate technologies for the future wireless networks. In this paper, we consider a downlink multi-channel wireless virtualized network consisting of a physical base station (PBS) and multiple mobile user equipments (MUEs) with energy harvesting capability. The PBS is owned by an infrastructure provider (InP) and is virtualized...
This paper considers a wireless powered cognitive radio (CR) multiple access network where multiple secondary users (SUs) communicate to a cognitive base station (CBS) using a narrow spectrum band shared with the primary user (PU). Two scenarios are investigated, where successive interference cancellation (SIC) is assumed to be available in the first scenario and unavailable in the second scenario...
This paper considers a full-duplex underlay cognitive radio (CR) network with a full-duplex cognitive base station (CBS) transmitting signals to a set of half-duplex downlink secondary users (SUs) and receiving signals from a set of half-duplex uplink SUs. The problem of joint uplink and downlink SU pairing, channel and power allocation for maximizing the sum rate of the CR network is investigated...
This paper considers a multiuser multichannel simultaneous wireless information and power transfer (SWIPT) cognitive radio (CR) network, where a set of secondary users (SUs) simultaneously harvests energy and decodes information using the same signals transmitted from a cognitive base station (CBS). Power splitting is adopted to realize SWIPT by splitting the signal power into two portions, where...
This paper investigates the problem of resource allocation in a downlink cognitive radio (CR) network where secondary users (SUs) share multiple channels with the primary user (PU). The aim is to maximize the energy efficiency of the SUs while satisfying the transmit power constraint, the interference power constraint to protect the PU and the minimum rate requirements to guarantee the quality-of-service...
This paper studies a cognitive radio network (CRN) consisting of multiple secondary users (SUs). The SUs are allowed to share the channels licensed to multiple primary users (PUs) on condition that the signal to interference plus noise ratio (SINR) on each channel at the PU is higher than a threshold. The problem of joint channel and power allocation for both the PUs and the SUs are investigated....
This paper considers a two-user spectrum sharing cognitive radio multiple access channel (CR-MAC) coexisting with a pair of primary users (PUs). Different from the existing works in CR-MAC where the interference power constraint is applied to protect the PU transmission, a more advanced protection criterion over the interference power constraint, namely PU outage constraint, is adopted in this paper...
In this paper, we propose an uneven clustering-based data collection strategy for sensor networks. The theory of Compressive sensing (CS) is used to reduce the transmissions for energy conservation in our method. We research the threshold of maximum transmission radius for heterogeneous nodes based on the energy consumption model. Then, the optimal cluster size is obtained with the help of the maximum...
This paper considers a cognitive radio (CR) network in the presence of a malicious eavesdropper who attempts to receive confidential messages from a pair of primary users (PUs). Under the PU secrecy rate loss constraint and the SU maximum transmit power constraint, a pair of secondary users (SUs) is proposed to interfere with the eavesdropper to improve the PU secrecy level and thus gain its own transmission...
Absorption refrigeration system is a nonlinear process with strong interactions among each working device. It is of practically significance to develop a accurate and reliable model for real-time optimization and performance monitoring of overall system. The hybrid modeling approach take advantages of both physical and empirical modeling approaches. The model is robust and gives a better match to...
This paper describes some strategies for meeting challenges to the grid's ability to provide reliable power delivery. The goal is to provide a vision for a comprehensive and systematic approach to meet the criteria for grid safety and reliability through new information services.
This paper investigates the problem of energy efficient resource allocation in a chunk-based multi-carrier cognitive radio (CR) network. Chunk-based resource allocation is adopted where subcarriers are grouped into chunks to be allocated to the secondary users (SUs). The objective is to maximize the energy efficiency of the CR network while also satisfying the transmit power constraint as well as...
This paper considers a cognitive radio network where multiple secondary users (SUs) sharing multiple channels with the primary user (PU). The SUs are assumed to carry delay-sensitive services, thus the concept of effective capacity, which is defined as the maximum supported constant arrival rate under the delay quality of service (QoS) constraint, is adopted. Beside the delay QoS constraint, the interference...
This paper investigates the problem of joint user association and resource allocation in a downlink cognitive radio (CR) network. In the CR network, multiple cognitive base stations (CBSs) and multiple secondary users (SUs) are considered to share multiple channels with the primary user (PU) under the condition that the interference from the CR network to the PU is restricted. Exclusive user association,...
In this paper, a downlink multi-carrier cognitive radio (CR) network is considered. The CR network consists of one cognitive base station (CBS) and a set of secondary users (SUs) sharing the same spectrum with the primary user (PU). Chunk-based resource allocation is adopted where subcarriers are grouped into chunks for allocation to the SUs. The problem of chunk-based resource allocation under the...
Existing Fibre channel (FC) network interface cards usually support either FC-AE-ASM or ADVB upper protocol. However, different upper protocols are used in different specific application environments. FC-AE-ASM and ADVB are respectively designed for transmitting commands and video/audio stream. Aiming to this, we present a light-weighted solution. A simplified container defined in ADVB is introduced...
Cognitive radio is considered to be a key technology for future heterogeneous networks. Cognitive radio network is an evolution of the cognitive radio by extending the radio link scope to network scope, and is defined as a network that can observe its environment, make decisions based on the observations, and then reconfigure according to the decisions, all while taking into account the end-to-end...
This paper studies a spectrum sharing cognitive radio (CR) network coexisting with a primary network. In particular, the channel state information (CSI) between the secondary transmitter (STx) and the primary receiver (PRx) is assumed to be outdated due to channel feedback latency. We assume that the secondary user (SU) shall satisfy a given delay quality-of-service (QoS) constraint as well as the...
In this paper, we consider a cognitive relay network which contains a source node, a destination node and a group of network clusters each consisting of several cognitive relay nodes. We choose one relay node with the optimal power value in each cluster to aid the data transmission from source to destination, with the goals of minimizing the total transmitting power and maximizing the network capacity...
Cooperative relays have been proposed as effective solutions for radio range extension in mobile and wireless broadband networks. As such, a cooperative system is studied in this paper that consists of one single-antenna source node, L single-antenna relay nodes, and one M-antenna destination node. The impact of feedback delay to partial relay selection scheme is investigated, where a best relay is...
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.