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Amirkabir University of Technology
(30 results)-
White Papers
Finding an Optimized Discriminate Function for Internet Application Recognition
June 8, 2009, 12:00am PDT
Everyday the usages of the Internet increase and simply a world of the data become accessible. Network providers do not want to let the provided services to be used in harmful or terrorist...
Provided by Amirkabir University of Technology
-
White Papers
Analysis and Design of All-Optical Switching in Apodized and Chirped Bragg Gratings
June 5, 2008, 12:00am PDT
In this paper, effects of the different apodization and chirp functions in one-dimensional nonlinear Bragg grating on switching characteristics are studied. It is shown that with increasing the...
Provided by Amirkabir University of Technology
-
White Papers
Multi-Wavelengths Optical Switching and Tunable Filters Using Dynamic Superimposed Photorefractive Bragg Grating
May 12, 2008, 12:00am PDT
The authors present a new scheme for all optical multi-wavelengths switching and filtering using photorefractive materials to route optical signals without converting to electronic state. For this...
Provided by Amirkabir University of Technology
-
White Papers
QoS-Aware Multicast Ad Hoc On-Demand Distance Vector Routing
July 4, 2007, 12:00am PDT
Ad hoc networking will become a major technology for wireless connectivity beside the multimedia necessity within the next few years. There are too many applications where one-to-many...
Provided by Amirkabir University of Technology
-
White Papers
A Novel Score-Aware Routing Algorithm in Wireless Sensor Networks
September 1, 2010, 12:00am PDT
Wireless sensor networks are new generation of networks. These networks are appropriate means for collecting and diffusing environmental information, or communicating occurrence of an event to...
Provided by Amirkabir University of Technology
-
White Papers
A Fuzzy Clustering Model for Fuzzy Data With Outliers
November 18, 2010, 12:00am PST
In this paper a fuzzy clustering model for fuzzy data with outliers is proposed. The model is based on Wasserstein distance between interval valued data which is generalized to fuzzy data. In...
Provided by Amirkabir University of Technology
-
White Papers
A Decision-Analytic Approach for P2P Cooperation Policy Setting
September 9, 2010, 12:00am PDT
While overall performance of peer-to-peer systems depends strongly on the amount of resource contributions made by individual peers, autonomous and rational peers make decisions on their...
Provided by Amirkabir University of Technology
-
White Papers
A Dynamic Ant Colony Based Routing Algorithm for Mobile Ad-Hoc Networks
March 24, 2011, 12:00am PDT
In this paper, the authors study the performance of ant colony based routing algorithms in Mobile Ad hoc NETworks (MANETs) and present SAMP-DSR, a new algorithm to address the shortcomings of both...
Provided by Amirkabir University of Technology
-
White Papers
QoS Driven Channel Assignment in Multi-Channel Multi-Radio Wireless Mesh Networks
August 29, 2010, 12:00am PDT
Channel assignment in multi-channel multi-radio wireless mesh networks is a powerful management tool to exploit available resources efficiently. In this paper, the authors study the problem of...
Provided by Amirkabir University of Technology
-
White Papers
A Maximum Fair Bandwidth Approach for Channel Assignment in Wireless Mesh Networks
December 30, 2007, 12:00am PST
Multi-Channel Multi-Radio WMNs are promising solutions for overcoming the limited capacity problem in multihop wireless networks. In these WMNs, each mesh router is equipped with multiple radios...
Provided by Amirkabir University of Technology
-
White Papers
On the Complexity of Bandwidth Constrained Routing in Wireless Mesh Networks
December 1, 2008, 12:00am PST
The authors investigate the bandwidth constrained routing problem in wireless mesh networks. Whereas the bandwidth constrained routing problem is solvable in polynomial time in wired networks, it...
Provided by Amirkabir University of Technology
-
White Papers
Optimal Joint QoS Routing and Channel Assignment in Multi-Channel Multi-Radio WMNs
March 1, 2010, 12:00am PST
The authors study the problem of finding a performance bound on joint QoS routing and channel assignment in multi-channel multi-radio wireless mesh networks, which is a fundamental issue in...
Provided by Amirkabir University of Technology
-
White Papers
QoS Driven Dynamic Channel Assignment in Multi-Channel Multi-Radio Wireless Mesh Networks
April 14, 2010, 12:00am PDT
Channel assignment in multi-channel multi-radio wireless mesh networks is a powerful management tool to exploit available resources efficiently. The authors study the problem of dynamic channel...
Provided by Amirkabir University of Technology
-
White Papers
Node Connectivity Analysis in Multi-Hop Wireless Networks
April 10, 2010, 12:00am PDT
In this paper, the authors study node connectivity in multi-hop wireless networks. Nodal degree of connectivity as one of the fundamental graph properties is the basis for the study of network...
Provided by Amirkabir University of Technology
-
White Papers
Mobility-Based Multicast Routing Algorithm for Wireless Mobile Ad-Hoc Networks: A Learning Automata Approach
November 25, 2009, 12:00am PST
In this paper, the authors propose a distributed learning automata-based algorithm to solve the multicast routing problem in wireless mobile Ad-hoc networks. The proposed algorithm estimates the...
Provided by Amirkabir University of Technology
-
White Papers
Designing a Self-Organised System for Service Substitution and Placement in Wireless Sensor Networks
July 9, 2011, 12:00am PDT
Since Wireless Sensor Networks (WSN) as ad hoc networks do not have infrastructures and their topologies change dynamically, network nodes should be able to take suitable decisions without needing...
Provided by Amirkabir University of Technology
-
White Papers
Subgoal Discovery in Reinforcement Learning Using Local Graph Clustering
September 1, 2011, 12:00am PDT
Reinforcement Learning is an area of machine learning that studies the problem of solving sequential decision making problems. The agent must learn behavior through trial-and-error interaction...
Provided by Amirkabir University of Technology
-
White Papers
A Cellular Learning Automata-Based Deployment Strategy for Mobile Wireless Sensor Networks
October 24, 2010, 12:00am PDT
One important problem which may arise in designing a deployment strategy for a wireless sensor network is how to deploy a specific number of sensor nodes throughout an unknown network area so that...
Provided by Amirkabir University of Technology
-
White Papers
Dynamic Point Coverage Problem in Wireless Sensor Networks: A Cellular Learning Automata Approach
September 14, 2009, 12:00am PDT
One way to prolong the lifetime of a wireless sensor network is to schedule the active times of sensor nodes, so that a node is active only when it is really needed. In the dynamic point coverage...
Provided by Amirkabir University of Technology
-
White Papers
Adaptive Limited Fractional Guard Channel Algorithms: A Learning Automata Approach
September 8, 2009, 12:00am PDT
In this paper, two learning automata based adaptive limited fractional guard channel algorithms for cellular mobile networks are proposed. These algorithms try to minimize the blocking probability...
Provided by Amirkabir University of Technology
-
White Papers
Data Aggregation in Sensor Networks Using Learning Automata
January 10, 2009, 12:00am PST
One way to reduce energy consumption in wireless sensor networks is to reduce the number of packets being transmitted in the network. As sensor networks are usually deployed with a number of...
Provided by Amirkabir University of Technology
-
White Papers
MABRP: A Multi-Armed Bandit Problem-Based Energy-Aware Routing Protocol for Wireless Sensor Network
April 18, 2012, 12:00am PDT
Wireless Sensor Networks consist of tiny sensors which have limitations such as energy. These networks are utilized in a variety of applications which aids in boosting the network lifetime hence...
Provided by Amirkabir University of Technology
-
White Papers
An Energy-Efficient Learning Automata Based Coordination Topology Maintenance Algorithm for Prolonging Lifetime of Ad Hoc Wireless Networks
April 28, 2012, 12:00am PDT
One of the basic restrictions in Ad Hoc Wireless Networks is energy supply and because of that proposing of power saving protocols that do the normal tasks of network without significantly...
Provided by Amirkabir University of Technology
-
Whitepapers
A Cellular-Based Routing Algorithm for Ad-Hoc Wireless Networks
February 20, 2008, 12:00am PST
In this paper, the authors present a routing algorithm when an Ad-Hoc network is in the coverage of a cellular network. To perform routing in Ad-Hoc network, the proposed algorithm exploits...
Provided by Amirkabir University of Technology
-
Whitepapers
Adaptive Quorum: A Traffic Aware Power Saving Mechanism for Multi-Hop Mobile Ad-Hoc Networks
February 20, 2008, 12:00am PST
In this paper, the authors propose a method for adaptive power saving based on Cyclic Quorum method. Quorum based protocols can make a guarantee for upper delay bounds which a node can experience...
Provided by Amirkabir University of Technology
-
Whitepapers
Robust Speaker Verification Based on Multi Stage Vector Quantization of MFCC Parameters on Narrow Bandwidth Channels
February 20, 2008, 12:00am PST
This paper presents a very low bit rate and robust client-server-based speaker verification system using MFCC parameters. Two aspects are proposed and assessed including very low bit rate...
Provided by Amirkabir University of Technology
-
Whitepapers
Improved ITU-P.563 Non-Intrusive Speech Quality Assessment Method for Covering VOIP Conditions
February 20, 2008, 12:00am PST
Voice over internet protocol, and in particular speech quality assessment and prediction, is an active area of research. Many methods have been developed for the quality assessment of the...
Provided by Amirkabir University of Technology
-
Whitepapers
A Spatial Correlation Analysis for Moving Object Data Aggregation in WSNs
July 1, 2012, 12:00am PDT
In Wireless Sensor Networks (WSNs) due to unfavorable environmental conditions that sensor nodes are placed into and some other reasons, power limitation of sensor nodes is the main challenge....
Provided by Amirkabir University of Technology
-
Whitepapers
Designing and Optimizing the Fetch Unit for a RISC Core
September 2, 2010, 12:00am PDT
Despite the extensive deployment of multi-core architectures in the past few years, the design and optimization of each single processing core is still a fresh field in computing. On the other...
Provided by Amirkabir University of Technology
-
Whitepapers
An Analytical Model of Communication Networks in Multi-Cluster Systems in the Presence of Non-Uniform Traffic
June 29, 2009, 12:00am PDT
Several analytical models of interconnection networks of multi-cluster systems under uniform traffic pattern have been proposed in the literature. However, there has been hardly any work reported...
Provided by Amirkabir University of Technology
-
Whitepapers
An Analytical Model of Communication Networks in Multi-Cluster Systems in the Presence of Non-Uniform Traffic
June 29, 2009, 12:00am PDT
Several analytical models of interconnection networks of multi-cluster systems under uniform traffic pattern have been proposed in the literature. However, there has been hardly any work reported...
Provided by Amirkabir University of Technology
-
Whitepapers
Designing and Optimizing the Fetch Unit for a RISC Core
September 2, 2010, 12:00am PDT
Despite the extensive deployment of multi-core architectures in the past few years, the design and optimization of each single processing core is still a fresh field in computing. On the other...
Provided by Amirkabir University of Technology
-
Whitepapers
A Spatial Correlation Analysis for Moving Object Data Aggregation in WSNs
July 1, 2012, 12:00am PDT
In Wireless Sensor Networks (WSNs) due to unfavorable environmental conditions that sensor nodes are placed into and some other reasons, power limitation of sensor nodes is the main challenge....
Provided by Amirkabir University of Technology
-
Whitepapers
Improved ITU-P.563 Non-Intrusive Speech Quality Assessment Method for Covering VOIP Conditions
February 20, 2008, 12:00am PST
Voice over internet protocol, and in particular speech quality assessment and prediction, is an active area of research. Many methods have been developed for the quality assessment of the...
Provided by Amirkabir University of Technology
-
Whitepapers
Robust Speaker Verification Based on Multi Stage Vector Quantization of MFCC Parameters on Narrow Bandwidth Channels
February 20, 2008, 12:00am PST
This paper presents a very low bit rate and robust client-server-based speaker verification system using MFCC parameters. Two aspects are proposed and assessed including very low bit rate...
Provided by Amirkabir University of Technology
-
Whitepapers
Adaptive Quorum: A Traffic Aware Power Saving Mechanism for Multi-Hop Mobile Ad-Hoc Networks
February 20, 2008, 12:00am PST
In this paper, the authors propose a method for adaptive power saving based on Cyclic Quorum method. Quorum based protocols can make a guarantee for upper delay bounds which a node can experience...
Provided by Amirkabir University of Technology
-
Whitepapers
A Cellular-Based Routing Algorithm for Ad-Hoc Wireless Networks
February 20, 2008, 12:00am PST
In this paper, the authors present a routing algorithm when an Ad-Hoc network is in the coverage of a cellular network. To perform routing in Ad-Hoc network, the proposed algorithm exploits...
Provided by Amirkabir University of Technology
-
White Papers
An Energy-Efficient Learning Automata Based Coordination Topology Maintenance Algorithm for Prolonging Lifetime of Ad Hoc Wireless Networks
April 28, 2012, 12:00am PDT
One of the basic restrictions in Ad Hoc Wireless Networks is energy supply and because of that proposing of power saving protocols that do the normal tasks of network without significantly...
Provided by Amirkabir University of Technology
-
White Papers
MABRP: A Multi-Armed Bandit Problem-Based Energy-Aware Routing Protocol for Wireless Sensor Network
April 18, 2012, 12:00am PDT
Wireless Sensor Networks consist of tiny sensors which have limitations such as energy. These networks are utilized in a variety of applications which aids in boosting the network lifetime hence...
Provided by Amirkabir University of Technology
-
White Papers
Data Aggregation in Sensor Networks Using Learning Automata
January 10, 2009, 12:00am PST
One way to reduce energy consumption in wireless sensor networks is to reduce the number of packets being transmitted in the network. As sensor networks are usually deployed with a number of...
Provided by Amirkabir University of Technology
-
White Papers
Adaptive Limited Fractional Guard Channel Algorithms: A Learning Automata Approach
September 8, 2009, 12:00am PDT
In this paper, two learning automata based adaptive limited fractional guard channel algorithms for cellular mobile networks are proposed. These algorithms try to minimize the blocking probability...
Provided by Amirkabir University of Technology
-
White Papers
Dynamic Point Coverage Problem in Wireless Sensor Networks: A Cellular Learning Automata Approach
September 14, 2009, 12:00am PDT
One way to prolong the lifetime of a wireless sensor network is to schedule the active times of sensor nodes, so that a node is active only when it is really needed. In the dynamic point coverage...
Provided by Amirkabir University of Technology
-
White Papers
A Cellular Learning Automata-Based Deployment Strategy for Mobile Wireless Sensor Networks
October 24, 2010, 12:00am PDT
One important problem which may arise in designing a deployment strategy for a wireless sensor network is how to deploy a specific number of sensor nodes throughout an unknown network area so that...
Provided by Amirkabir University of Technology
-
White Papers
Subgoal Discovery in Reinforcement Learning Using Local Graph Clustering
September 1, 2011, 12:00am PDT
Reinforcement Learning is an area of machine learning that studies the problem of solving sequential decision making problems. The agent must learn behavior through trial-and-error interaction...
Provided by Amirkabir University of Technology
-
White Papers
Designing a Self-Organised System for Service Substitution and Placement in Wireless Sensor Networks
July 9, 2011, 12:00am PDT
Since Wireless Sensor Networks (WSN) as ad hoc networks do not have infrastructures and their topologies change dynamically, network nodes should be able to take suitable decisions without needing...
Provided by Amirkabir University of Technology
-
White Papers
Mobility-Based Multicast Routing Algorithm for Wireless Mobile Ad-Hoc Networks: A Learning Automata Approach
November 25, 2009, 12:00am PST
In this paper, the authors propose a distributed learning automata-based algorithm to solve the multicast routing problem in wireless mobile Ad-hoc networks. The proposed algorithm estimates the...
Provided by Amirkabir University of Technology
-
White Papers
Node Connectivity Analysis in Multi-Hop Wireless Networks
April 10, 2010, 12:00am PDT
In this paper, the authors study node connectivity in multi-hop wireless networks. Nodal degree of connectivity as one of the fundamental graph properties is the basis for the study of network...
Provided by Amirkabir University of Technology
-
White Papers
QoS Driven Dynamic Channel Assignment in Multi-Channel Multi-Radio Wireless Mesh Networks
April 14, 2010, 12:00am PDT
Channel assignment in multi-channel multi-radio wireless mesh networks is a powerful management tool to exploit available resources efficiently. The authors study the problem of dynamic channel...
Provided by Amirkabir University of Technology
-
White Papers
Optimal Joint QoS Routing and Channel Assignment in Multi-Channel Multi-Radio WMNs
March 1, 2010, 12:00am PST
The authors study the problem of finding a performance bound on joint QoS routing and channel assignment in multi-channel multi-radio wireless mesh networks, which is a fundamental issue in...
Provided by Amirkabir University of Technology
-
White Papers
On the Complexity of Bandwidth Constrained Routing in Wireless Mesh Networks
December 1, 2008, 12:00am PST
The authors investigate the bandwidth constrained routing problem in wireless mesh networks. Whereas the bandwidth constrained routing problem is solvable in polynomial time in wired networks, it...
Provided by Amirkabir University of Technology
-
White Papers
A Maximum Fair Bandwidth Approach for Channel Assignment in Wireless Mesh Networks
December 30, 2007, 12:00am PST
Multi-Channel Multi-Radio WMNs are promising solutions for overcoming the limited capacity problem in multihop wireless networks. In these WMNs, each mesh router is equipped with multiple radios...
Provided by Amirkabir University of Technology
-
White Papers
QoS Driven Channel Assignment in Multi-Channel Multi-Radio Wireless Mesh Networks
August 29, 2010, 12:00am PDT
Channel assignment in multi-channel multi-radio wireless mesh networks is a powerful management tool to exploit available resources efficiently. In this paper, the authors study the problem of...
Provided by Amirkabir University of Technology
-
White Papers
A Dynamic Ant Colony Based Routing Algorithm for Mobile Ad-Hoc Networks
March 24, 2011, 12:00am PDT
In this paper, the authors study the performance of ant colony based routing algorithms in Mobile Ad hoc NETworks (MANETs) and present SAMP-DSR, a new algorithm to address the shortcomings of both...
Provided by Amirkabir University of Technology
-
White Papers
A Decision-Analytic Approach for P2P Cooperation Policy Setting
September 9, 2010, 12:00am PDT
While overall performance of peer-to-peer systems depends strongly on the amount of resource contributions made by individual peers, autonomous and rational peers make decisions on their...
Provided by Amirkabir University of Technology
-
White Papers
A Fuzzy Clustering Model for Fuzzy Data With Outliers
November 18, 2010, 12:00am PST
In this paper a fuzzy clustering model for fuzzy data with outliers is proposed. The model is based on Wasserstein distance between interval valued data which is generalized to fuzzy data. In...
Provided by Amirkabir University of Technology
-
White Papers
A Novel Score-Aware Routing Algorithm in Wireless Sensor Networks
September 1, 2010, 12:00am PDT
Wireless sensor networks are new generation of networks. These networks are appropriate means for collecting and diffusing environmental information, or communicating occurrence of an event to...
Provided by Amirkabir University of Technology
-
White Papers
QoS-Aware Multicast Ad Hoc On-Demand Distance Vector Routing
July 4, 2007, 12:00am PDT
Ad hoc networking will become a major technology for wireless connectivity beside the multimedia necessity within the next few years. There are too many applications where one-to-many...
Provided by Amirkabir University of Technology
-
White Papers
Multi-Wavelengths Optical Switching and Tunable Filters Using Dynamic Superimposed Photorefractive Bragg Grating
May 12, 2008, 12:00am PDT
The authors present a new scheme for all optical multi-wavelengths switching and filtering using photorefractive materials to route optical signals without converting to electronic state. For this...
Provided by Amirkabir University of Technology
-
White Papers
Analysis and Design of All-Optical Switching in Apodized and Chirped Bragg Gratings
June 5, 2008, 12:00am PDT
In this paper, effects of the different apodization and chirp functions in one-dimensional nonlinear Bragg grating on switching characteristics are studied. It is shown that with increasing the...
Provided by Amirkabir University of Technology
-
White Papers
Finding an Optimized Discriminate Function for Internet Application Recognition
June 8, 2009, 12:00am PDT
Everyday the usages of the Internet increase and simply a world of the data become accessible. Network providers do not want to let the provided services to be used in harmful or terrorist...
Provided by Amirkabir University of Technology
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