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.
In this paper, the antenna location in distributed antenna system with hybrid user distribution is discussed. Instead of maximizing the cell ergodic rate, we focus on minimizing the expectation of squared distance applying selective transmission schemes. Using the weighted expectation of squared distance criterion (WESDC), the optimization problem of antenna location is proved to be convex when two...
Expensive live training together with the evolution of information technologies gives a great opportunity to build a military simulation centers with high level of realism. To train not only one sort of the force (like pilots or drivers only) we have to merge simulation capabilities to single robust simulation environment with the ability to train wide spectrum of personnel together. However to do...
To study scientific application different computing paradigm used. Simulation of tool base Grid infrastructure plays its roll for study of grid base computation. We introduce the here Grid computing paradigm for resource coordination over the global computation world. Resources management and scheduling of applications in such large-scale distributed systems is a complex undertaking in case of Grid...
Carrier aggregation has been introduced by 3rd Generation Partnership project (3GPP) in order to meet the IMT-Advanced requirements. Using carrier aggregation, multiple component carriers with a different bandwidth, dispersed within intra or inter bands can be simultaneously utilised to provide higher data rates, better coverage and lower latency resulting a better user experience. However, carrier...
This paper proposes a double auction mechanism for energy trade between buying and selling agents. The framework is general enough, requiring neither the agents' preferences nor the energy pricing to be fixed values across the spatially distributed agents. A microgrid controller implements a distributed algorithm to maximize individual participating agents' utilities as well as the social welfare...
This paper presents modified formulations of coupled-constraints consensus based bundle algorithm to resolve the cooperative transportation problem. Formulation frameworks for a cooperative transportation mission are suggested. Suggested frameworks are deal with various types of constraints and characteristics of cooperative transportation mission. In this paper, several modifications on reward function...
Dual Tone Multi Frequency signal detection is an important to developing for telecommunication equipment. "This is a standard where keystrokes from the telephone keypad are translated into dual tone signals over the audio link". FPGA has gains very popularity in recent years due to their reprogram ability and flexibility. This paper presents a new type of ZYBO Board ZYNQ 7000 series FPGA...
In order to solve the problem of spectrum and power allocation for D2D communication in cellular networks when the prior knowledge is not available, a method based on machine learning is proposed in this paper. Q-learning, which is one of the most important algorithms in machine learning, is proposed to solve the radio resource management in underlay mode to find the optimal strategy in time series...
This research explores the use of grid resource broker as a high-level solution for the grid resource management system in a hierarchical cluster grid environment to process medical imaging data. There are two components to the Multi-Instance Broker which are the Self-Adaptive Multi-Instance Broker Manager and the Broker Instance entity. The Manager is adaptive through its self-determination of the...
Scientific workflow management systems face a new challenge in the era of cloud computing. The past availability of rich information regarding the state of the used infrastructures is gone. Thus, organising virtual infrastructures so that they not only support the workflow being executed, but also optimise for several service level objectives (e.g., Maximum energy consumption limit, cost, reliability,...
This paper studies the impact of transmission rate control and pricing on the congestion management practices on bottleneck links of Internet service provider (ISP). QoS negotiation between ISP and users is conducted by letting users specify their minimum and maximum transmission rate required. Each link tentatively allocates the maximum transmission rates to the traffics that are going to cross it...
Allowing cellular operators to offload data traffic to unlicensed spectrum has the potential to significantly increase the capacity of the cellular network systems. This paper considers the spectrum sharing among multiple cellular operators in the unlicensed spectrum. One of the main challenges for this system is how to control the interference between the cellular users and the unlicensed users in...
Critical infrastructure protection (CIP) is envisioned to be one of the most challenging security problems in the coming decade. One key challenge in CIP is the ability to allocate resources, either personnel or cyber, to critical infrastructures with different vulnerability and criticality levels. In this work, a contract- theoretic approach is proposed to solve the problem of resource allocation...
In this work, we focus on the problem of virtual machines (VMs) placement in geographically distributed data centers, where tenants may require a set of networking VMs. The aim of the present work is to plan and optimize the placement of tenant's VMs in a distributed Cloud environment while considering location and system performance constraints. Thus, we propose ILP formulations which have as objective...
In this paper, power allocation problem is presented for device-to-device (D2D) communications underlying cellular networks in multi-user scenario. In this scenario, multiple D2D pairs are allowed to share one cellular resource. As a preliminary study, we consider the scenario with only two D2D pairs and propose a power optimization scheme under this scenario. For cellular link and the D2D links sharing...
Analog network coding (ANC) can effectively improve the outage performance and increase its spectrum efficiency for two-way relay systems. An adaptive analog network coding strategy (AVSN-ANC strategy) was proposed in this paper, which dynamically adjusts the number of timeslots according to the instantaneous channel information. In this manner, the outage probability can be significantly reduced...
Joint optimization of user association, resource allocation and Almost Blank Subframe (ABSF) based enhanced Inter-Cell Interference Coordination (eICIC), on which macro-cells mute for scheduling the pico users, is of great importance to further improve the network performance in HetNets, however, the introduce of ABSF makes analyzing resource allocation extremely difficult because this results in...
This paper presents a new method for constructing a conflict graph for D2D communications in cellular systems, which is useful for efficient radio resource allocation for D2D links. The construction is an iterative process which includes a broadcast-and-acknowledgment protocol. The convergence and delay performance of the proposed constructing process is theoretically analyzed. Simulation results...
Massive machine-to-machine (M2M) communication terminals can cause great challenges in cellular network. One of the critical challenges is to reduce network congestion and control signaling overhead. Most of data types in M2M communication is periodic data, which enables M2M user repetitively access networks, and inevitably lead to network congestion and large control signaling overhead. In this paper,...
In this paper, we propose an interference avoidance resource allocation scheme based on graph-coloring algorithm to introduce performance gain using spatial reuse in D2D (Device-to-Device) system. By assigning multiple D2D pairs to a single D2D resource, interference from neighboring D2D pairs is inevitable, which leads to performance degradation. Therefore, we first introduce the feedback method...
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.