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Ensuring voters and candidates' confidentiality in E-voting systems

Ensuring voters and candidates' confidentiality in E-voting ...

引用

IEEE Princeton Section Sarnoff Symposium

作者： Haijun Pan Edwin Hou Nirwan Ansari Advanced Networking Laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA

A new method based on cryptography to ensure voters and candidates' confidentiality in the Internet E-Voting, referred to as the Name and vOte separaTed E-voting (NOTE) system, is proposed. In NOTE, an impartial party, the Election Commission (EC) will be responsible for part of the vote counting duties besides collecting and verifying the voter ID. The votes and the candidates' names are separated into two parts during the counting process. EC will hold the candidates' names secret before the tally comes up; the Vote Counting Committee (VCC) only counts the votes and is not involved in unveiling the vote tally by virtue of the anonymity of the candidates. Only EC can disclose the final tally after VCC has counted all votes without knowing who the votes are for during the vote counting procedure. This scheme will effectively ensure voters and candidates' confidentiality, and thus improving election security and fairness.

关键词： Nominations and elections Internet Electronic voting Arrays Encryption

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Congestion Control in Wireless Flow-Aware Networks

Congestion Control in Wireless Flow-Aware Networks

引用

IEEE International Conference on Communications (ICC)

作者： Jerzy Domzal Nirwan Ansari Andrzej Jajszczyk Department of Telecommunications AGH University of Science and Technology Krakow Poland Advanced Networking Laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology University Heights Newark NJ USA

Applicability of the concept of Flow-Aware networking (FAN) for QoS assurance in wireless networks is studied in the paper. The link utilization efficiency for six versions of the TCP protocol in the FAN environment is investigated and compared. The second contribution of the paper is a new congestion control mechanism for FAN, referred to as RAMAF (Remove and Accept Most Active Flows), that fulfills the wireless link requirements. While in basic FAN, new flows cannot begin transmission in congestion, the new solution ensures short acceptance times of new streaming flows in a router regardless if the outgoing link is congested or not. As compared to other congestion control mechanisms proposed for FAN, RAMAF does not need to tune any parameters, and is thus automatic. Moreover, the proposed solution allows for more effective transmission of elastic flows in comparison to other approaches, and may be used in both wired and wireless FAN. The results of the carefully selected simulation experiments show that TCP NewJersey incorporated with the RAMAF mechanism meets the requirements of the wireless transmission in FAN.

关键词： Quality of service Proposals Wireless networks Estimation IEEE Communications Society Analytical models

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Designing energy-efficient optical line terminal for TDM passive optical networks

Designing energy-efficient optical line terminal for TDM pas...

引用

IEEE Princeton Section Sarnoff Symposium

作者： Jingjing Zhang Ting Wang Nirwan Ansari Advanced Networking Laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA NEC Laboratories of America Inc. Princeton NJ USA

This paper proposes a novel scheme which can efficiently reduce the energy consumption of Optical Line Terminals (OLTs) in Time Division Multiplexing (TDM) Passive Optical Networks (PONs) such as EPON and GPON. Currently, OLTs consume a significant amount of energy in PON, which is one of the major FTTx technologies. To be environmental friendly, it is desirable to reduce energy consumption of OLT as much as possible; such requirement becomes even more urgent as OLT keeps increasing its provisioning data rate, and higher data rate provisioning usually implies larger energy consumption. In this paper, we propose a novel energy-efficient OLT structure which guarantees services of end users with the smallest number of power-on OLT line cards. More specifically, we adapt the number of power-on OLT line cards to the real-time incoming traffic. Also, in order to avoid service disruption resulted by powering off OLT line cards, proper optical switches are equipped in OLT to dynamically configure the communications between OLT line cards and ONUs.

关键词： Optical switches Energy consumption Passive optical networks EPON Power demand Optical network units Integrated optics

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Optimal Decision Fusion Based Automatic Modulation Classification by Using Wireless Sensor Networks in Multipath Fading Channel

Optimal Decision Fusion Based Automatic Modulation Classific...

引用

2011 IEEE Global Telecommunications Conference - GLOBECOM 2011

作者： Yan Zhang Nirwan Ansari Wei Su Advanced Networking Laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA Communications-Electronics RD&E Center AMSEL-RD-IW-I U.S. Army RDECOM Aberdeen Proving Ground MD USA

Automatic modulation classification (AMC) is deployed, as the intermediate step between signal detection and demodulation, to identify modulation schemes automatically. Modulation classification is a challenging task, especially in a non-cooperative environment, owing to the lack of prior information on the transmitted signal at the receiver; the problem will be more challenging in the multipath fading channel. The proposed AMC method based on optimal decision fusion by using wireless sensor networks provides a more accurate classification result than any one of the individual signal alone. Wireless sensor networks offer increased reliability and optimal decision fusion provides huge gains in overall classification performance as compared to that of the single sensor. Thus, optimal decision fusion based AMC by using wireless sensor networks greatly enhances classification performance of weak signals in non-cooperative communication environment. Classification performances of optimal decision fusion based AMC by using wireless sensor networks in the multipath fading channel are investigated and evaluated in terms of correct classification probability. Through Monte Carlo simulations, we demonstrate that the proposed AMC algorithm can greatly outperform that of single sensor in multipath fading channel.

关键词： Modulation Fading Wireless sensor networks Manganese Signal to noise ratio Feature extraction Estimation

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Dynamic Time Allocation and Wavelength Assignment in Next Generation Multi-Rate Multi-Wavelength Passive Optical Networks

Dynamic Time Allocation and Wavelength Assignment in Next Ge...

引用

IEEE International Conference on Communications (ICC)

作者： J. Zhang N. Ansari Advanced Networking laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA

Driven by emerging bandwidth-hungry applications, next generation passive optical networks (NG-PONs) provide higher bandwidth to users by using more wavelengths and increasing data rates of optical network units (ONUs). On the other hand, for smooth upgrading, NG-PON is desired to be backward compatible with the current TDM PONs where data rates of ONUs remain unchanged. Thus, both high-rate ONUs and low-rate ONUs may coexist in NG-PON. The key parameters of bandwidth allocation in this multi-rate multi-wavelength network include achieving fairness among all ONUs, encouraging low-rate ONUs to increase their data rates, and utilizing wavelength resources efficiently. This paper illustrates contributions in three main aspects. First, we define rate-dependent utilities for ONUs, which serve as the basis for bandwidth arbitration among low-rate and high-rate ONUs. Second, to achieve fairness among ONUs, we employ water-filling idea and formulate a utility max-min fair bandwidth allocation scheme. Third, to efficiently utilize the wavelengths, we map the resource allocation problem in multi-wavelength PON into a multi-processor scheduling problem and employ a heuristic algorithm to address the NP-hard wavelength assignment problem.

关键词： Wavelength assignment Next generation networking Passive optical networks Bandwidth Channel allocation Optical network units Time division multiplexing Resource management Heuristic algorithms Scheduling algorithm

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Traffic-Aware Video Streaming in Broadband Wireless Networks

Traffic-Aware Video Streaming in Broadband Wireless Networks

引用

IEEE Conference on Wireless Communications and networking

作者： Ehsan Haghani Nirwan Ansari Shyam Parekh Doru Colin Advanced Networking Lab Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA Bell Laboratories Alcatel-Lucent Technologies Inc. Murray Hill NJ USA

ISBN: (纸本)9781424463961;9781424463985

With increasing implementation of broadband wireless networks and extensive deployment of multimedia services such as Video on Demand (VoD) or IPTV, the demand for video streaming applications will increase and more people will use their wireless devices to reach numerous video contents available in the Internet. Streaming real-time video in wireless networks is a challenging problem due to the stringent service requirements of video traffic and impairments of wireless channels. Providing the required Quality of Service (QoS) through efficient resource allocation is a complicated problem that service providers are confronting. In this paper, we propose a traffic-aware, cross-layer solution for enhancing the perceived video quality at the end user in wireless networks. Our solution incorporates the characteristics of the MPEG traffic to give more priority to the more important frames and to protect them against dropping when available resources of the network are not sufficient for providing the desired QoS to the traffic flow. It is shown that the proposed solution will improve the perceived video quality over the broadband wireless networks.

关键词： Telecommunication traffic Streaming media Wireless networks Video on demand Quality of service IPTV IP networks Web and internet services Resource management Protection

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On Analyzing the Capacity of WDM PONs

On Analyzing the Capacity of WDM PONs

引用

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference

作者： Jingjing Zhang Nirwan Ansari Advanced Networking laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA

By taking advantage of the multiple wavelength provisioning capability, WDM PON dramatically enlarges its capacity as compared to TDM PON. The capacity of a WDM PON system depends on many factors, such as the number and capacities of wavelength channels, the network architecture, the wavelength support of receivers, and the tuning ability of lasers. This paper introduces the definition of achievable rate region to describe the capacity of WDM PON and analyzes the achievable rate region for a given network architecture from the perspective of wavelength sharing. This can facilitate comparison of different WDM PON architectures and help design an efficient access control scheme.

关键词： Wavelength division multiplexing Passive optical networks Vertical cavity surface emitting lasers Laser tuning Surface emitting lasers Optical receivers Time division multiplexing Distributed feedback devices Communication system traffic control Optical transmitters

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An Efficient Time-Bound Access Control Scheme for Dynamic Access Hierarchy

An Efficient Time-Bound Access Control Scheme for Dynamic Ac...

引用

International Conference on Mobile Ad-hoc and Sensor Networks, MSN

作者： Yan Sui Fabio Maino Yudong Guo Kai Wang Xukai Zou Department of Computer and Information Sciences Purdue University Indianapolis IN USA Advanced Networking Group Cisco System Inc. San Jose CA USA Department of Computer Science and Technology University of Information Engineering Zhengzhou Henan China

Embedding user subscription time into cryptographic key generation and assignment for hierarchical access control has raised tremendous interest among researchers and practitioners in multicast, broadcast, and secure group communication fields. During the subscription period, a user of a higher class can compute the (time-bound) keys of his/her own class and also derive the keys of all its descendant classes in the access hierarchy. However, after the subscription expires, the user cannot compute/derive the keys. Unfortunately, due to the inclusion of time in the keys, existing schemes either suffer from (colluding) attacks or are only applicable to static access hierarchies. In this paper, we propose a new key generation and assignment scheme for this kind of time-bound hierarchy access control. The new scheme is able not only to prevent colluding attacks but also to support dynamics of access hierarchies in a simple and efficient way.

关键词： Access control Cryptography Subscriptions Broadcasting Mobile computing Sensor systems computer networks Intelligent networks computer science Information retrieval

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Load distribution with queuing delay bound over multipath networks: Rate control using stochastic delay prediction

Load distribution with queuing delay bound over multipath ne...

引用

作者： Prabhavat, Sumet Nishiyama, Hiroki Nemoto, Yoshiaki Kato, Nei Ansari, Nirwan Graduate School of Information Sciences Tohoku University Sendai Japan Advanced Networking Laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ United States

ISBN: (纸本)9781563479410

Network connections established via multiple paths are becoming more eminent;efficient utilization of network resources provided by multiple interfaces, e.g., network gateways equipped with International Mobile Telecommunications-advanced (IMT-advanced) technologies or enabled with multipath routing, is necessary for next generation networks. In reality, both wired and wireless links are sometimes over-provisioned in which some are utilized while others are reserved for backup. One of the key issues in our study is to investigate how these interfaces can be used simultaneously for transmitting real time traffic with a short delay. Optimally distributing network traffic over multiple paths connected between source and destination gateways is the main purpose of this research. Our proposed model takes into account of both propagation delay and bandwidth for determining the optimal path. If there are paths with different propagation delays between a source and a destination, the path with a larger propagation delay will likely be assigned with a lower precedence. For input traffic, the splitting ratios are optimally adjusted in order to minimize the maximum path delay. We then show that the delay controlled load distribution model can optimally utilize the path with different path parameters in minimizing the maximum path delay. Copyright © 2008 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

关键词： Next generation networks

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VoIP Traffic Scheduling in WiMAX Networks

VoIP Traffic Scheduling in WiMAX Networks

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IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference

作者： Ehsan Haghani Nirwan Ansari Advanced Networking Lab Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA

Popularity of voice over IP (VoIP) applications such as Skype, Google Talk, and MSN Messenger along with emerging deployment of WiMAX networks is making VoIP over WiMAX an attractive market and a driving force for both carriers and equipment suppliers in capturing and spurring the next wave of telecommunications innovation, though challenges remain. Optimization of the VoIP call capacity over WiMAX networks is one such crucial challenge and remains an open research issue. While conventional scheduling methods have not considered the traffic characteristics of VoIP, in this paper, we propose a traffic aware scheduling algorithm for VoIP applications in WiMAX networks. We study the performance of our proposed method and compare it with that of some conventional methods. The tradeoff between delay and bandwidth efficiency is discussed, and it is shown that using our scheduling method enhances the efficiency of VoIP over WiMAX.

关键词： Telecommunication traffic WiMAX Traffic control Job shop scheduling Scheduling algorithm Bandwidth Internet telephony Technological innovation Switches Resource management

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