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University of Ulm
(18 results)-
White Papers
On the Capacity of the 2-User Gaussian MAC Interfering With a P2P Link
October 29, 2010, 12:00am PDT
The Multiple Access Channel (MAC) is a scenario where several transmitters want to deliver one message each to one receiver. The capacity region of the MAC is known since 1971,. This setup models...
Provided by University of Ulm
-
White Papers
On Cyclic Delay Diversity in OFDM Based Transmission Schemes
April 12, 2007, 12:00am PDT
Cyclic Delay Diversity (CDD) is a simple approach to introduce spatial diversity to an Orthogonal Frequency Division Multiplexing (OFDM) based transmission scheme that itself has no built-in...
Provided by University of Ulm
-
White Papers
Architecture for Decentralized Mitigation of Local Congestion in VANETs
November 19, 2010, 12:00am PST
The limited communication resources in VANETs have to be used efficiently to achieve reliable communication even in high load situations, where high packet loss is expected. Packet loss can occur...
Provided by University of Ulm
-
White Papers
Cooperative Position Verification - Defending Against Roadside Attackers 2.0
November 19, 2010, 12:00am PST
Security analysis has shown that attacks from roadside attackers constitute the highest risk for Vehicular Ad-hoc NETworks (VANETs). Therefore, protecting them against these attackers is one of...
Provided by University of Ulm
-
White Papers
Decentralized Position Verification in Geographic Ad Hoc Routing
January 18, 2010, 12:00am PST
Inter-vehicle communication is regarded as one of the major applications of Mobile Ad hoc NETworks (MANETs). Compared to MANETs or Wireless Sensor Networks (WSNs), these so called Vehicular Ad hoc...
Provided by University of Ulm
-
White Papers
Exploration of Adaptive Beaconing for Efficient Intervehicle Safety Communication
February 16, 2010, 12:00am PST
In the future, inter-vehicle communication will make driving safer, easier, and more comfortable. As a cornerstone of the system, vehicles need to be aware of other vehicles in the vicinity. This...
Provided by University of Ulm
-
White Papers
Degradation of Transmission Range in VANETs Caused by Interference
February 16, 2010, 12:00am PST
Reliability is one of the key requirements for inter-vehicle communication in order to improve safety in road traffic. This paper describes the difficulties of inter-vehicle communication. The...
Provided by University of Ulm
-
White Papers
Vehicle Behavior Analysis to Enhance Security in VANETs
October 4, 2008, 12:00am PDT
Vehicular Ad-Hoc NETworks (VANET) will help to improve traffic safety and efficiency. By exchanging information between each other, vehicles can warn drivers or even prepare for a dangerous...
Provided by University of Ulm
-
White Papers
Vulnerabilities of Geocast Message Distribution
October 25, 2007, 12:00am PDT
Geocast refers to the distribution of messages within a geographic destination region. This makes it an important paradigm for the application to Vehicular Ad hoc NETworks (VANETs), because most...
Provided by University of Ulm
-
Whitepapers
PrivacyJudge: Effective Privacy Controls for Online Published Information
October 1, 2011, 12:00am PDT
With the rise of online social networks, sharing of personal information online has become the rule for many people rather than the exception. However, users have only limited abilities to...
Provided by University of Ulm
-
Whitepapers
V-Tokens for Conditional Pseudonymity in VANETs
April 1, 2010, 12:00am PDT
Privacy is an important issue in future vehicle networks, because vehicles broadcast detailed information. Also of importance is accountability due to safety critical applications. Conditional...
Provided by University of Ulm
-
Whitepapers
SeVeCom - Security and Privacy in Car2Car Ad Hoc Networks
May 11, 2012, 12:00am PDT
In order to reduce the amount of traffic accidents on the roads, new safety systems based on vehicular communication - which allows vehicles to exchange information with nearby vehicles - are...
Provided by University of Ulm
-
Whitepapers
A VANET-Based Emergency Vehicle Warning System
November 9, 2011, 12:00am PST
One often cited use case for vehicular networks are applications that relate to emergency vehicles. In addition to the traditional siren, they could use radio communication to warn other vehicles...
Provided by University of Ulm
-
Whitepapers
Channel Switch and Quiet Attack: New DoS Attacks Exploiting the 802.11 Standard
November 9, 2011, 12:00am PST
Network communication using unprotected air as a medium leads to unique challenges ensuring confidentiality, integrity and availability. While newer amendments of IEEE 802.11 provide acceptable...
Provided by University of Ulm
-
Whitepapers
Privacy Requirements in Vehicular Communication Systems
November 9, 2011, 12:00am PST
A primary goal of vehicular communication systems is the enhancement of traffic safety by equipping vehicles with wireless communication units to facilitate cooperative awareness. Privacy issues...
Provided by University of Ulm
-
Whitepapers
Adaptive Topology Based Gossiping in VANETs Using Position Information
March 17, 2008, 12:00am PDT
Gossiping is a lightweight and simple technique for information dissemination in many application domains, be it in Wireless Sensor Networks (WSNs), Mobile Ad-hoc NETworks (MANETs), or Vehicular...
Provided by University of Ulm
-
Whitepapers
Secure Vehicular Communication Systems: Implementation, Performance, and Research Challenges
August 2, 2011, 12:00am PDT
Vehicular Communication (VC) systems are on the verge of practical deployment. Nonetheless, their security and privacy protection is one of the problems that have been tackled only recently. In...
Provided by University of Ulm
-
White Papers
Using Language Modelling to Integrate Speech Recognition With a Flat Semantic Analysis
January 1, 2008, 12:00am PST
One-stage decoding as an integration of speech recognition and linguistic analysis into one probabilistic process is an interesting trend in speech research. This paper presents a simple one-stage...
Provided by University of Ulm
-
Whitepapers
Secure Vehicular Communication Systems: Implementation, Performance, and Research Challenges
August 2, 2011, 12:00am PDT
Vehicular Communication (VC) systems are on the verge of practical deployment. Nonetheless, their security and privacy protection is one of the problems that have been tackled only recently. In...
Provided by University of Ulm
-
Whitepapers
Adaptive Topology Based Gossiping in VANETs Using Position Information
March 17, 2008, 12:00am PDT
Gossiping is a lightweight and simple technique for information dissemination in many application domains, be it in Wireless Sensor Networks (WSNs), Mobile Ad-hoc NETworks (MANETs), or Vehicular...
Provided by University of Ulm
-
Whitepapers
Privacy Requirements in Vehicular Communication Systems
November 9, 2011, 12:00am PST
A primary goal of vehicular communication systems is the enhancement of traffic safety by equipping vehicles with wireless communication units to facilitate cooperative awareness. Privacy issues...
Provided by University of Ulm
-
Whitepapers
Channel Switch and Quiet Attack: New DoS Attacks Exploiting the 802.11 Standard
November 9, 2011, 12:00am PST
Network communication using unprotected air as a medium leads to unique challenges ensuring confidentiality, integrity and availability. While newer amendments of IEEE 802.11 provide acceptable...
Provided by University of Ulm
-
Whitepapers
A VANET-Based Emergency Vehicle Warning System
November 9, 2011, 12:00am PST
One often cited use case for vehicular networks are applications that relate to emergency vehicles. In addition to the traditional siren, they could use radio communication to warn other vehicles...
Provided by University of Ulm
-
Whitepapers
SeVeCom - Security and Privacy in Car2Car Ad Hoc Networks
May 11, 2012, 12:00am PDT
In order to reduce the amount of traffic accidents on the roads, new safety systems based on vehicular communication - which allows vehicles to exchange information with nearby vehicles - are...
Provided by University of Ulm
-
Whitepapers
V-Tokens for Conditional Pseudonymity in VANETs
April 1, 2010, 12:00am PDT
Privacy is an important issue in future vehicle networks, because vehicles broadcast detailed information. Also of importance is accountability due to safety critical applications. Conditional...
Provided by University of Ulm
-
Whitepapers
PrivacyJudge: Effective Privacy Controls for Online Published Information
October 1, 2011, 12:00am PDT
With the rise of online social networks, sharing of personal information online has become the rule for many people rather than the exception. However, users have only limited abilities to...
Provided by University of Ulm
-
White Papers
Vulnerabilities of Geocast Message Distribution
October 25, 2007, 12:00am PDT
Geocast refers to the distribution of messages within a geographic destination region. This makes it an important paradigm for the application to Vehicular Ad hoc NETworks (VANETs), because most...
Provided by University of Ulm
-
White Papers
Vehicle Behavior Analysis to Enhance Security in VANETs
October 4, 2008, 12:00am PDT
Vehicular Ad-Hoc NETworks (VANET) will help to improve traffic safety and efficiency. By exchanging information between each other, vehicles can warn drivers or even prepare for a dangerous...
Provided by University of Ulm
-
White Papers
Degradation of Transmission Range in VANETs Caused by Interference
February 16, 2010, 12:00am PST
Reliability is one of the key requirements for inter-vehicle communication in order to improve safety in road traffic. This paper describes the difficulties of inter-vehicle communication. The...
Provided by University of Ulm
-
White Papers
Exploration of Adaptive Beaconing for Efficient Intervehicle Safety Communication
February 16, 2010, 12:00am PST
In the future, inter-vehicle communication will make driving safer, easier, and more comfortable. As a cornerstone of the system, vehicles need to be aware of other vehicles in the vicinity. This...
Provided by University of Ulm
-
White Papers
Decentralized Position Verification in Geographic Ad Hoc Routing
January 18, 2010, 12:00am PST
Inter-vehicle communication is regarded as one of the major applications of Mobile Ad hoc NETworks (MANETs). Compared to MANETs or Wireless Sensor Networks (WSNs), these so called Vehicular Ad hoc...
Provided by University of Ulm
-
White Papers
Cooperative Position Verification - Defending Against Roadside Attackers 2.0
November 19, 2010, 12:00am PST
Security analysis has shown that attacks from roadside attackers constitute the highest risk for Vehicular Ad-hoc NETworks (VANETs). Therefore, protecting them against these attackers is one of...
Provided by University of Ulm
-
White Papers
Architecture for Decentralized Mitigation of Local Congestion in VANETs
November 19, 2010, 12:00am PST
The limited communication resources in VANETs have to be used efficiently to achieve reliable communication even in high load situations, where high packet loss is expected. Packet loss can occur...
Provided by University of Ulm
-
White Papers
On the Capacity of the 2-User Gaussian MAC Interfering With a P2P Link
October 29, 2010, 12:00am PDT
The Multiple Access Channel (MAC) is a scenario where several transmitters want to deliver one message each to one receiver. The capacity region of the MAC is known since 1971,. This setup models...
Provided by University of Ulm
-
White Papers
Using Language Modelling to Integrate Speech Recognition With a Flat Semantic Analysis
January 1, 2008, 12:00am PST
One-stage decoding as an integration of speech recognition and linguistic analysis into one probabilistic process is an interesting trend in speech research. This paper presents a simple one-stage...
Provided by University of Ulm
-
White Papers
On Cyclic Delay Diversity in OFDM Based Transmission Schemes
April 12, 2007, 12:00am PDT
Cyclic Delay Diversity (CDD) is a simple approach to introduce spatial diversity to an Orthogonal Frequency Division Multiplexing (OFDM) based transmission scheme that itself has no built-in...
Provided by University of Ulm
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