The First Millimeter-Wave Point-to-Point Wireless Gigabit Ethernet...
Every new generation of wireless networks require more and more cell-sites that are closer and closer together combined with the fast growing demand for the capacity of the transmission links....
View ArticleWiMAX Integration in NGN Network, Architecture, Protocols and Services
With growing demands for fast provision of new and complex services, imposed by life and business dynamic in general, service providers are forced to adopt open technologies and advanced business...
View ArticleExtended Kalman Filtering and Phase Detector Modeling for a Digital...
The realization of a Digital Phase-Locked Loop (DPLL) requires to choose a suitable phase detector and to design an appropriate loop filter; these tasks are commonly nontrivial in most...
View ArticleGIS Supporting the Plan of BTS (Base Transceiver Stations) for Mobile Network...
In recent years the technological development in general and the spread on the territory of antennas for mobile phones urged a state of widespread public concern repeatedly verging the social...
View ArticleEnergy-Aware Secure Routing for Large Wireless Sensor Networks
Wireless Sensor Networks (WSN) are vulnerable to a wide set of attacks which threaten the network operation. Although communication and security technologies for computer networks have reached a...
View ArticleQoS Management in Experimental Environment
New applications usually combine interactivity and multimedia resulting in a huge diversity of possible services. The negotiated Quality of Service should be result of application/user...
View ArticleAnalytical Description of a Parameter-Based Optimization of The Quality of...
In this paper, the perceived quality of VoIP communications is studied. The distributions of the number of consecutive received and lost packets, respectively named gap and burst, of a VoIP...
View ArticleSimulation and Modeling of Packet Loss on VoIP Traffic: A Power-Law Model
Voice over IP (VoIP) is now available on many IP networks carriers in the world with lower cost compared to Public Switched Telephone Network (PSTN). However, current IP networks only offers...
View ArticlePerformance Evaluation Model of Optimization Methods for Wireless Sensor...
Wireless sensor networks are often composed of large number of wireless sensor nodes that are mostly using battery supplies. Nodes are small and equipped with sensors that cooperatively monitor...
View ArticleNetwork Coding: An Excellent Approach for Overloaded Communication Era
Data flow in graphs is one of the most principle challenges faced by computer scientists and mathematicians. The problem of data flow in a graph has many practical applications e.g. routing in...
View ArticleThe Effect of an Enhanced Channel Assignment Algorithm on an IEEE 802.11 WLAN
In this paper, a channel-assignment algorithm at the Access Points (APs) of a Wireless Local Area Network (WLAN) is proposed in order to maximize Signal-to-Interference Ratio (SIR) at the user...
View ArticleSoftware Defined Adaptive Codec for Cognitive Radio
Recently, cognitive radio has been proposed as a promising technology to improve spectrum utilization. A highly flexible SDR (Software Defined Radio) system needs to configure each of its blocks...
View ArticleEnergy Balancing by Combinatorial Optimization for Wireless Sensor Networks
Due to the recent advances in electronics and wireless communication, the development of lowcost, low-power, multifunctional sensors have received increasing attention. In this paper, novel...
View ArticleInformation-Theoretic Comparison of Channel Capacity for FDMA and DS-CDMA in...
In this paper, a comparative estimate of the channel capacity assigned to each user for Frequency-Division Multiple-Access (FDMA) and Direct-Sequence Code-Division Multiple-Access (DS-CDMA)...
View ArticleYaw Phase Mode Attitude Control Using Z Wheel for LEO Microsatellite
A control system is proposed for a low Earth orbit gravity gradient stabilized microsatellite using Z wheel. The microsatellite is 3-axis stabilized using a yaw reaction wheel with dual redundant...
View ArticleTwo-Valued Integrand Coding Transmission of Multi-Rate Quasi-Synchronous CDMA...
The next generation mobile communication system is desired to transmit multimedia information at multi-rate. Two-valued integrand codes are applied to the realization of the multi-rate...
View ArticleMiddleware Design of Bandwidth Constrained QoS Model for Multi Hop Ad Hoc...
Middleware is actually a resource manager that guarantees the implementation of all policies, contracts to be satisfied and it ensures that contracts do not go beyond the limits of network...
View ArticleThe System Transfering Between Laser-Satellites
Laser inter-satellite communication is on the verge of becoming a reality. It will be a key building block for wide-area space data networks of the future. Design methodologies treating these as...
View ArticleAnalysis of Non-Linear Response in DS-CDMA Satellite Systems
The nature of Frequency Division Multiple Access (FDMA) implies that the receiver channel has to amplify a set of carriers in frequency intervals. Satellite systems with Code Division Multiple...
View ArticleAnalytic Solution of Nadir Attitude Pointing for LEO Microsatellite
A spacecraft in orbit always needs to stabilize the attitude against the external disturbance torques acting on it. Attitude control usually needs to be autonomous or semi-autonomous. On Alsat-1,...
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