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Aalborg University
(79 results)-
White Papers
An Interval Decision Diagram Based Firewall
January 15, 2009, 12:00am PST
This paper explores the use of Interval Decision Diagrams (IDDs) as the central structure of a firewall packet filtering mechanism. This is done by first relating the packet filtering problem to...
Provided by Aalborg University
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White Papers
Towards Linking Virtual Models With Physical Objects in Construction Using RFID - Review of Ontologies
March 23, 2009, 12:00am PDT
Virtual models have in recent years proven their worth in practice relating to building design. Today virtual models of the complete project are created before the project is carried out in...
Provided by Aalborg University
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White Papers
Low Latency Handover in IEEE 802.11g Wireless LANs
December 16, 2007, 12:00am PST
Low latency handover and its application in wireless LANs help in reducing latency handover time in the networks. The two networks involve different architectures, involving the use of hardware...
Provided by Aalborg University
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White Papers
Leadership, Culture And Management In An International Context
January 1, 2008, 12:00am PST
One of the most important developments in the study of cross-cultural leadership in the past several years has been the recognition that some leadership styles may be universally accepted and...
Provided by Aalborg University
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White Papers
Integrated Data Management for Mobile Services in the Real World
January 1, 2010, 12:00am PST
Market research companies predict a huge market for services to be delivered to mobile users. Services include route guidance, point-of-interest search, metering services such as road pricing and...
Provided by Aalborg University
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White Papers
Cooperative Positioning Techniques for Mobile Localization in 4G Cellular Networks
May 1, 2007, 12:00am PDT
This paper exploits the concept of cooperative localization by utilizing the additional information obtained from short-range links to enhance the location estimation accuracy in forthcoming...
Provided by Aalborg University
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White Papers
Optimizing Route Length in Reactive Protocols for Ad Hoc Networks
February 23, 2007, 12:00am PST
Many protocols for Mobile Ad-hoc Networks propose construction of routes reactively using flooding. The advantage hereof is that no prior assumption of the network topology is required in order to...
Provided by Aalborg University
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White Papers
Intelligent Co-Operative Pim Architecture for Image Analysis and Pattern Recognition
March 19, 2010, 12:00am PDT
Computer memory systems are increasingly a bottleneck limiting application performance. Processor-In-Memory (PIM) architectures, which capitalize on merging the processing unit with its memory...
Provided by Aalborg University
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White Papers
Beyond Technological Diversification: The Impact Of Employee Diversity On Innovation
March 1, 2009, 12:00am PST
This paper investigates the effect of employee diversity in terms of gender, age, ethnicity and education on the firm's likelihood of introducing an innovation. The analysis draws on data from a...
Provided by Aalborg University
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White Papers
Knowledge Management In The Learning Economy
June 27, 2006, 12:00am PDT
The purpose of this paper is to show why to build 'Learning organizations' must be a central element of knowledge management. The paper argues that the wide use of information technology has a...
Provided by Aalborg University
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White Papers
Learning To Grow: A Comparative Analysis Of The Wind Energy Sector In Denmark And India
October 12, 2007, 12:00am PDT
This paper uses sectoral systems of innovation framework to examine the relationship between technology policy and industrial development by comparing the emergence of the wind energy sector in...
Provided by Aalborg University
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White Papers
Introducing Academic Skills In Know-How-Based Firms: Innovative Potential Or Non-Complementarity?
November 14, 2007, 12:00am PST
This paper contributes with two new findings to the literature on how universities contribute to industrial development. First, it argues and substantiates quantitatively through logistic...
Provided by Aalborg University
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White Papers
EXIT Chart Analysis of Binary Message-Passing Decoders
June 29, 2007, 12:00am PDT
Binary message-passing decoders for LDPC codes are analyzed using EXIT charts. For the analysis, the variable node decoder performs all computations in the L-value domain. For the special case of...
Provided by Aalborg University
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White Papers
A Scalable Cooperative Wireless Grid Architecture and Associated Services for Future Communications
January 15, 2007, 12:00am PST
In the previous work the authors have advocated the need for cooperative behaviour among mobile devices, mainly focusing on the benefits and potentials of a novel architecture approach referred to...
Provided by Aalborg University
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White Papers
Interprocedural Dataflow Analysis Over Weight Domains With Infinite Descending Chains
January 6, 2009, 12:00am PST
The authors study generalized fixed-point equations over idempotent semirings and provide an efficient algorithm for the detection whether a sequence of Kleene's iterations stabilizes after a...
Provided by Aalborg University
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White Papers
Protocol Coding Through Reordering of User Resources: Applications and Capacity Results
November 26, 2010, 12:00am PST
While there are continuous efforts to introduce new communication systems and standards, it is legitimate to ask the question: How can one send additional bits by minimally changing the systems...
Provided by Aalborg University
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White Papers
Physical Network Coding in Two - Way Wireless Relay Channels
July 3, 2007, 12:00am PDT
It has recently been recognized that the wireless networks represent a fertile ground for devising communication modes based on network coding. A particularly suitable application of the network...
Provided by Aalborg University
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White Papers
Performance-Relevant Network Traffic Correlation
April 17, 2007, 12:00am PDT
Correlation structure is an important metric to consider when modeling the performance of network traffic. Particularly, the presence of Long-Range Dependence (LRD) in the input process may, under...
Provided by Aalborg University
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White Papers
An Authentication Code Against Pollution Attacks in Network Coding
September 17, 2009, 12:00am PDT
Systems exploiting network coding to increase their throughput suffer greatly from pollution attacks which consist of injecting malicious packets in the network. The pollution attacks are...
Provided by Aalborg University
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White Papers
A Note on the Injection Distance
December 9, 2009, 12:00am PST
Kotter and Kschischang showed in that the network coding counterpart of Gabidulin codes performs asymptotically optimal with respect to the subspace distance. Recently, Silva and Kschischang...
Provided by Aalborg University
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White Papers
Optimal One Bit Time Reversal for UWB Impulse Radio in Multi-User Wireless Communications
June 17, 2009, 12:00am PDT
In this paper, with the purpose of further reducing the complexity of the system, while keeping its temporal and spatial focusing performance, the authors investigate the possibility of using...
Provided by Aalborg University
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White Papers
Internationalisation Of Firms In Developing Countries: Towards An Integrated Conceptual Framework
August 1, 2006, 12:00am PDT
The last three decades have witnessed a substantial amount of research into the internationalisation process of firms. The focus of most of these studies have, however, been on the downstream...
Provided by Aalborg University
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White Papers
Formation, Organisation And Management Of The (Global) Value Chain In A Theoretical Perspective
September 1, 2009, 12:00am PDT
One of the significant trends in inter-firm studies over the past two decades has been the rapid development of interest in value chain and value chain management. While competition and thus the...
Provided by Aalborg University
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White Papers
Paradigms In International Business Research - Classifications And Applications
November 1, 2009, 12:00am PDT
Business management scholars have frequently lamented over the gap between dominant management theories on the one hand and business practices on the other. Some scholars argue that the observed...
Provided by Aalborg University
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White Papers
Formal Analysis of Privacy for Vehicular Mix-Zones
September 14, 2010, 12:00am PDT
Safety critical applications for recently proposed vehicle to Vehicle Ad-hoc NETworks (VANETs) rely on a beacon signal, which poses a threat to privacy since it could allow a vehicle to be...
Provided by Aalborg University
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White Papers
Inter-Firm Collaboration In The Fuzzy Front-End Of The Innovation
April 3, 2007, 12:00am PDT
Innovation and innovation processes have traditionally been considered from the manufacturing companies' perspective. The innovation process is typically divided into a series of succeeding stages...
Provided by Aalborg University
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White Papers
Distributed Development: Challenges & Management Practices Of Danish Industrial Leaders
November 26, 2009, 12:00am PST
This paper discusses management practices of Danish industrial firms in relation to the main challenges they face during the transition from highly concentrated R&D to dispersed R&D. This is a...
Provided by Aalborg University
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White Papers
Implementation of Cooperative Information Storage on Distributed Sensor Boards
February 22, 2008, 12:00am PST
Reliable data retrieval from a sensor network can require a temporal distributed data storage of the measured data among all motes. This is the case when a source of information, or a gateway, is...
Provided by Aalborg University
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White Papers
Energy Saving Potential Using Active Networking on Linux Mobile Phones
May 5, 2009, 12:00am PDT
This paper investigates the deployment of active networking on mobile devices. The objective is to determine the possibility of decreasing energy consumption on mobile devices accessing Internet...
Provided by Aalborg University
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White Papers
Implementation and Performance Analysis of Cooperative Medium Access Control Protocol for CSMA/CA Based Technologies
May 5, 2009, 12:00am PDT
In this paper, the authors investigate three different MAC protocols based on CSMA/CA in terms of throughput and channel access delay. The investigation is based on analytical models and real...
Provided by Aalborg University
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White Papers
Energy Evaluation for Bluetooth Link Layer Packet Selection Scheme
May 5, 2009, 12:00am PDT
This paper is investigating the energy saving potential of Bluetooth. Using the Asynchronous Connectionless Link (ACL) for data transmission, Bluetooth provides different packet types, namely DM...
Provided by Aalborg University
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White Papers
Evolutionary Theory for Cluster Head Election in Cooperative Clusters Implementing Network Coding
May 5, 2009, 12:00am PDT
In this paper a cluster head election problem is studied for a cooperative wireless network. The nodes in the cluster use random linear network coding to enhance the throughput performance in...
Provided by Aalborg University
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White Papers
Radio Resource Allocation Algorithm for Relay - Aided Cellular OFDMA System
February 26, 2007, 12:00am PST
In this paper, the authors have proposed practical radio resource algorithms for RS-aided cellular system based on OFDMA technology. After a simple path selection procedure, subchannels are...
Provided by Aalborg University
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White Papers
Opportunistic Interference Cancellation in Cognitive Radio Systems
February 15, 2007, 12:00am PST
In this paper, the authors investigate the problem of spectrally efficient operation of a Cognitive Radio (CR), also called Secondary System (SS), under an interference from the Primary System...
Provided by Aalborg University
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White Papers
Interference Cancelation Schemes for Uplink Transmission in Femtocells
April 28, 2011, 12:00am PDT
The authors present techniques that solve the near-far problems in femtocell networks. When a co-channel configuration is used, a transmission in the macrocell may cause interference to a...
Provided by Aalborg University
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White Papers
Designing Rules for Self-Organizing Protocols for a Cooperative Communication Architecture
July 16, 2006, 12:00am PDT
Based on the proposed hybrid cooperative communication architecture and the authors' research results in the field, they have seen great potential of cooperative communication for future wireless...
Provided by Aalborg University
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White Papers
Wireless Secrecy With Infrastructure - Aided Cooperation
November 25, 2007, 12:00am PST
A novel approach for ensuring confidential communications over infrastructure-based wireless networks is proposed and analyzed from an information-theoretic standpoint. The considered techniques...
Provided by Aalborg University
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White Papers
MIMO Performance Evaluation in a Street Microcell Using a Spatial Fading Emulator in Comparison With a Radio Propagation Test
September 30, 2009, 12:00am PDT
This paper presents effectiveness of a RF-controlled spatial fading emulator on MIMO performance evaluation in a street microcell environment in comparison with a radio propagation test. The...
Provided by Aalborg University
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White Papers
Emulation of Wireless Multi-Hop Topologies With Online Mobility Simulation
June 28, 2010, 12:00am PDT
Communication in wireless networks is affected by uncontrollable disturbances in the channel. Effects of these disturbances are exacerbated in networks with dynamic topologies and multiple hops....
Provided by Aalborg University
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White Papers
Wireless Broadband Access: Policy Implications of Heterogeneous Networks
September 15, 2010, 12:00am PDT
A wireless heterogeneous network can help increase the access transmission speed and contribute thereby to the broadband deployment policies of administrations and telecommunications operators....
Provided by Aalborg University
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White Papers
On Field Size and Success Probability in Network Coding
June 27, 2008, 12:00am PDT
Using tools from algebraic geometry and Grobner basis theory the authors solve two problems in network coding. First they present a method to determine the smallest field size for which linear...
Provided by Aalborg University
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White Papers
Computing Nash Equilibrium In Wireless Ad Hoc Networks: A Simulation-Based Approach
February 21, 2012, 12:00am PST
This paper studies the problem of computing Nash equilibrium in wireless networks modeled by Weighted Timed Automata. Such formalism comes together with a logic that can be used to describe...
Provided by Aalborg University
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White Papers
Multi-User MIMO and Carrier Aggregation in 4G Systems: The SAMURAI Approach
February 3, 2012, 12:00am PST
The market success of broadband multimedia-enabled devices such as smart phones, tablets, and laptops is increasing the demand for wireless data capacity in mobile cellular systems. In order to...
Provided by Aalborg University
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White Papers
On Modal Refinement and Consistency
July 1, 2008, 12:00am PDT
Almost 20 years after the original conception, the authors revisit several fundamental questions about modal transition systems. First, they demonstrate the incompleteness of the standard modal...
Provided by Aalborg University
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White Papers
User Scenarios 2020 - A Worldwide Wireless Future
July 1, 2009, 12:00am PDT
For years, telecommunications and IT have represented highly profitable business areas with continuous developments of technologies, devices and services to serve all types of users. During the...
Provided by Aalborg University
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White Papers
Receiver-Side Opportunism in Cognitive Networks
April 9, 2011, 12:00am PDT
Cognitive radios may increase spectral efficiency by filling in spectral gaps, transmitting under the interference temperature, or by exploiting transmitter-side information - all methods which...
Provided by Aalborg University
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White Papers
Physical Network Coding in Two-Way Wireless Relay Channels
February 27, 2007, 12:00am PST
It has recently been recognized that the wireless networks represent a fertile ground for devising communication modes based on network coding. A particularly suitable application of the network...
Provided by Aalborg University
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White Papers
Cognitive Radio Network Architecture: Part I - General Structure
March 11, 2008, 12:00am PDT
Cognitive radio has been considered as a key technology for future wireless communications and mobile computing. The authors note the cognitive radios can form Cognitive Radio Networks (CRN) by...
Provided by Aalborg University
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White Papers
Cognitive Radio Network Architecture: Part II - Trusted Network Layer Structure
March 11, 2008, 12:00am PDT
Cognitive radios shall form Cognitive Radio Network (CRN) to complete the packets delivery. As cognitive radio network is a general multi-hop wireless heterogeneous network, trust becomes a...
Provided by Aalborg University
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White Papers
Network Coding for Data Dissemination: It Is Not What You Know, But What Your Neighbors Know
May 1, 2009, 12:00am PDT
The authors propose a linear network coding scheme to disseminate a finite number of data packets in arbitrary networks. The setup assumes a packet erasure channel, slotted time, and that nodes...
Provided by Aalborg University
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White Papers
A Mobile Platform for Measurements in Dynamic Topology Wireless Networks
July 14, 2009, 12:00am PDT
Due to the wide spread of mobile devices, such as smartphones, nowadays new applications and appealing services are emerging for wireless networks. Some interesting novel architectures for...
Provided by Aalborg University
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White Papers
Wireless Peer-to-Peer Cooperation: When Is It Worth Adopting This Paradigm?
March 29, 2008, 12:00am PDT
Cooperation over short-range wireless links among devices downloading remote contents through cellular links is a paradigm quickly gaining ground in the view of answering some of the main issues...
Provided by Aalborg University
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White Papers
Network Coding Opportunities for Wireless Grids Formed by Mobile Devices
September 15, 2008, 12:00am PDT
Wireless grids have potential in sharing communication, computational and storage resources making these networks more powerful, more robust, and less cost intensive. However, to enjoy the...
Provided by Aalborg University
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White Papers
Localization Information Retrieval Exploiting Cooperation Among Mobile Devices
February 21, 2008, 12:00am PST
Localization information retrieval is breaking new ground for mobile applications for indoor or urban areas. GPS is the positioning technology that powers the majority of the navigation devices...
Provided by Aalborg University
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White Papers
Cooperative Wireless Networking Using Software Defined Radio
January 1, 2011, 12:00am PST
This paper describes a novel architecture in wireless communication referred to as micro cooperative communication and advocates the need of software defined radio to support this kind of...
Provided by Aalborg University
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White Papers
Cooperative Web Browsing for Mobile Phones
June 21, 2008, 12:00am PDT
This paper advocates a novel approach for web browsing on mobile phones based on cooperation among mobile phones within close proximity. In the actual state of the art, mobile phones can access...
Provided by Aalborg University
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White Papers
The Application of Software Defined Radio in a Cooperative Wireless Network
September 25, 2006, 12:00am PDT
This paper describes the use of Software Defined Radio over the Software Controlled Radio in a cooperative wireless network in an OFDM based downlink scenario. The paper argues that although the...
Provided by Aalborg University
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White Papers
Energy and Link Measurements for Mobile Phones Using IEEE802.11b/g
February 17, 2009, 12:00am PST
In this paper, the authors investigate the energy consumption and achievable data rates of commercially available mobiles phones using WLAN IEEE802.11bg for mobile peer to peer networking. In...
Provided by Aalborg University
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White Papers
Joint Approach for IP Overhead Reduction in Wireless Ad Hoc Networks
June 28, 2006, 12:00am PDT
Wireless ad hoc networks offer attractive features, including flexibility, self-organization and dynamic network creation. Due to the limited bandwidth- and energy-resources in ad hoc networks,...
Provided by Aalborg University
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White Papers
The Medium Is the Message : Secure Communication Via Waveform Coding in MIMO Systems
January 29, 2007, 12:00am PST
In this paper, the authors look at multiple antenna systems and code information on the communication medium itself to improve the link security. In the case of single data stream transmission,...
Provided by Aalborg University
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White Papers
Cooperative Power Saving Strategies in Wireless Networks: An Agent-Based Model
August 2, 2007, 12:00am PDT
Power consumption of mobile devices is a major subject of concern for the wireless domain. New multimedia services and advanced communication techniques such as upcoming TV-on-mobile will consume...
Provided by Aalborg University
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White Papers
On the Beneficial Effects of Cooperative Wireless Peer to Peer Networking
May 18, 2007, 12:00am PDT
Conventional cellular systems efficiency is currently being challenged by the continuously changing and more demanding world of mobile services and communications. The major problems in...
Provided by Aalborg University
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White Papers
Introducing Contextual Information to Mobile Phones by External and Embedded Sensors
April 1, 2008, 12:00am PDT
This paper introduces the opensensor platform. The idea is to build a wireless sensor platform that is inspired by the idea of open source. The material to build, to program and to teach the...
Provided by Aalborg University
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White Papers
Energy-Efficient Cooperative Techniques for Multimedia Services Over Future Wireless Networks
January 24, 2008, 12:00am PST
In this paper, the authors develop and analyze energy-efficient cooperative techniques for multimedia streaming applications in wireless networks. The concept of combined cellular-SR network...
Provided by Aalborg University
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White Papers
The Medium Is the Message
January 1, 2011, 12:00am PST
In this paper, the authors advocate exploiting channel descriptor information in packet data communication networks to gain transmission capacity. Besides the normal data transmission also the...
Provided by Aalborg University
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White Papers
Implementation and Performance Evaluation of Network Coding for Cooperative Mobile Devices
January 30, 2009, 12:00am PST
In this paper a performance evaluation of network coding for cooperative wireless networks is carried out. Implementing network coding on commercially available mobile devices, the performance is...
Provided by Aalborg University
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White Papers
Novel IP Header Compression Technique for Wireless Technologies With Fixed Link Layer Packet Types
August 29, 2006, 12:00am PDT
This paper focuses on the header compression for wireless technologies with fixed link layer packet types. Exploiting specifics of packet transmission over air in this situation, a novel IP header...
Provided by Aalborg University
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White Papers
Cooperative Spatial Reuse With Transmit Beamforming
September 4, 2007, 12:00am PDT
A cooperative scheme enabling spatial reuse, namely Cooperative Spatial Reuse (CSR), is proposed as a cooperative extension of the current TDMA-based MAC in wireless networks. In the CSR, a...
Provided by Aalborg University
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White Papers
A Genetic Algorithm for Source Election in Cooperative Clusters Implementing Network Coding
January 23, 2010, 12:00am PST
Reference scenarios of the present research are clusters of cooperating wireless nodes, implementing random linear network coding to enhance the throughput performance of file downloading and...
Provided by Aalborg University
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White Papers
Overall Performance Assessment of Energy-Aware Cooperative Techniques Exploiting Multiple Description and Scalable Video Coding Schemes
February 13, 2008, 12:00am PST
In this paper, the authors develop and analyze energy-efficient cooperative techniques for multimedia applications over wireless networks. The composite cellular-short-range network architecture...
Provided by Aalborg University
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White Papers
Bio-Inspired Energy-Aware Medium Access Control Protocol for Cooperative Wireless Networks
August 5, 2008, 12:00am PDT
In this paper, bio-inspired cooperation rules are applied to wireless communication networks. The main goal is to derive cooperative behavior rules to improve the energy consumption of each mobile...
Provided by Aalborg University
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White Papers
PictureViewer - A Mobile Application Using Network Coding
May 5, 2009, 12:00am PDT
This paper looks into the implementation details of network coding for a mobile application running on commercial mobile phones. The mobile application coined PictureViewer can convey pictures...
Provided by Aalborg University
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White Papers
Implementation of Random Linear Network Coding on OpenGL-Enabled Graphics Cards
May 5, 2009, 12:00am PDT
This paper describes the implementation of network coding on OpenGL-enabled graphics cards. Network coding is an interesting approach to increase the capacity and robustness in multi-hop networks....
Provided by Aalborg University
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White Papers
On the Impact of 2G and 3G Network Usage for Mobile Phones' Battery Life
May 5, 2009, 12:00am PDT
Over the last years mobile phones had a remarkable evolution. From a simple device for voice communication, it became a full blown multimedia device with multiple features and appealing services....
Provided by Aalborg University
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White Papers
Security and Privacy in a Wireless Remote Medical System for Home Healthcare Purpose
November 16, 2006, 12:00am PST
The prospect of transferring and storing health information in electronic form raises concerns about patient privacy and data security. Data security and patients' privacy in medical remote...
Provided by Aalborg University
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White Papers
LinkMind: Link Optimization in Swarming Mobile Sensor Networks
August 23, 2011, 12:00am PDT
A swarming mobile sensor network is comprised of a swarm of wirelessly connected mobile robots equipped with various sensors. Such a network can be applied in an uncertain environment for services...
Provided by Aalborg University
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White Papers
Competition Between Fixed and Mobile Broadband Access Based on Mobility and Data Volume
September 15, 2010, 12:00am PDT
This paper proposes a duopoly model based on a model initially introduced by Shubik and Levitan to analyze the competition based on mobility and data volume between fixed and mobile broadband...
Provided by Aalborg University
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White Papers
Copenhagen as a Centre of Excellence for Mobile and Wireless Communication - The Interplay Between Supply and Demand
September 15, 2010, 12:00am PDT
The aim of this paper is to analyze the potential of the Copenhagen capital region to maintain a leading position in development and provision of mobile technologies. The paper presents empirical...
Provided by Aalborg University
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White Papers
Wireless Broadband Access: Policy Implications of Heterogeneous Networks
September 15, 2010, 12:00am PDT
A wireless heterogeneous network can help increase the access transmission speed and contribute thereby to the broadband deployment policies of administrations and telecommunications operators....
Provided by Aalborg University
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White Papers
Emulation of Wireless Multi-Hop Topologies With Online Mobility Simulation
June 28, 2010, 12:00am PDT
Communication in wireless networks is affected by uncontrollable disturbances in the channel. Effects of these disturbances are exacerbated in networks with dynamic topologies and multiple hops....
Provided by Aalborg University
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