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2007 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks

Date 17-20 April 2007

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Displaying Results 1 - 25 of 90
  • [Title page - DYSPAN 2007]

    Publication Year: 2007, Page(s): c1
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  • [Copyright notice - DYSPAN 2007]

    Publication Year: 2007, Page(s): ii
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  • General Chair Message - DYSPAN 2007

    Publication Year: 2007, Page(s): iii
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  • Technical Chair Message - DYSPAN 2007

    Publication Year: 2007, Page(s): iv
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  • Policy Chairmen Welcome - DYSPAN 2007

    Publication Year: 2007, Page(s): v
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  • Report from the Patron and Sponsorship Committee Chair - DYSPAN 2007

    Publication Year: 2007, Page(s): vi
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  • Committees - DYSPAN 2007

    Publication Year: 2007, Page(s):vii - x
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  • Sponsors - DYSPAN 2007

    Publication Year: 2007, Page(s):xi - xii
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  • Table of contents - DYSPAN 2007

    Publication Year: 2007
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  • A Description of the August 2006 XG Demonstrations at Fort A.P. Hill

    Publication Year: 2007, Page(s):1 - 12
    Cited by:  Papers (20)  |  Patents (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1849 KB) | HTML iconHTML

    On Aug 15-17, 2006, Shared Spectrum Company (SSC) and the U.S. Department of Defense's Defense Advanced Research Projects Agency (DARPA) demonstrated, for the first time, a six node network of next generation (XG) radios capable of using spectrum over a wide range of frequencies on a secondary basis. The cognitive radios making up several formations of XG networks sensed radio signals over 225-600... View full abstract»

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  • A Game-Theoretic View on the Interference Channel with Random Access

    Publication Year: 2007, Page(s):13 - 21
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (373 KB) | HTML iconHTML

    As an important building block of cognitive radio networks, the interference channel with distributed and competing radio access is currently an active area of research. In this work, a basic two-by-two interference channel is studied by considering random packet arrivals and random access. In particular, each transmitter is assumed to select independently and concurrently a transmission probabili... View full abstract»

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  • A General Framework for Wireless Spectrum Auctions

    Publication Year: 2007, Page(s):22 - 33
    Cited by:  Papers (139)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB) | HTML iconHTML

    We propose a real-time spectrum auction framework to distribute spectrum among a large number wireless users under interference constraints. Our approach achieves conflict-free spectrum allocations that maximize auction revenue and spectrum utilization. Our design includes a compact and yet highly expressive bidding language, various pricing models to control tradeoffs between revenue and fairness... View full abstract»

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  • A Location-Based Method for Specifying RF Spectrum Rights

    Publication Year: 2007, Page(s):34 - 45
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (529 KB) | HTML iconHTML

    We provide a method to specify location based spectrum rights that enables spectrum management with finer resolution in space and frequency. This method accounts for the attenuation of transmissions from their source and so reveals the location based opportunities to reuse spectrum. The method uses a concise yet flexible data structure that has six parts: a signal strength, a frequency, a spectrum... View full abstract»

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  • A novel on-demand cognitive pilot channel enabling dynamic spectrum allocation

    Publication Year: 2007, Page(s):46 - 54
    Cited by:  Papers (79)  |  Patents (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB) | HTML iconHTML

    This paper addresses the implementation of the cognitive pilot channel (CPC), which has been recently proposed as a solution to assist the mobile reconfigurable and cognitive terminals in heterogeneous wireless scenarios with different access networks available and varying spectrum allocations. The paper describes the operation of the CPC and the different approaches existing in the literature dep... View full abstract»

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  • A Policy Engine for Spectrum Sharing

    Publication Year: 2007, Page(s):55 - 65
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB) | HTML iconHTML

    We argue for a policy-based approach to increase spectrum availability. To this extend, we briefly summarize a new language for expressing policies that allow opportunistic spectrum access. A Policy Reasoner that reasons about these policies can be used with cognitive radios to guarantee policy- specified behaviors while allowing spectrum sharing. We present our policy reasoner design and we evalu... View full abstract»

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  • A Policy Proposal to Enable Cognitive Radio for Public Safety and Industry in the Land Mobile Radio Bands

    Publication Year: 2007, Page(s):66 - 77
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (283 KB) | HTML iconHTML

    The frequency bands that have been licensed to the land mobile radio (LMR) services for decades are a tremendously fertile field for the deployment of cognitive radio technology. This paper outlines several reasons why policy-based cognitive radios would be particularly useful for modern public safety, federal non-military and business/industrial applications, especially in the VHF and UHF bands, ... View full abstract»

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  • Adaptive Positioning Systems for Cognitive Radios

    Publication Year: 2007, Page(s):78 - 84
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (173 KB) | HTML iconHTML

    Location awareness is a prominent characteristic of cognitive radio technologies. Realizing such awareness in cognitive radios require an underlying advanced positioning system that have cognition capabilities. In this paper, an innovative cognitive positioning system (CPS) that have cognition capabilities by means of adjusting positioning accuracy adaptively in both indoor and outdoor environment... View full abstract»

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  • An Autonomous Adaptive Base Station that Supports Multiple Wireless Network Systems

    Publication Year: 2007, Page(s):85 - 88
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (407 KB) | HTML iconHTML

    Various wireless systems are being developed to meet users' needs, and effective frequency use is urgently needed because of the rapid increase in frequency demand that accompanies the increasing popularity of wireless services. However, general base stations are making no effort to use frequency effectively, and cooperation among wireless system base stations is necessary for more effective frequ... View full abstract»

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  • An Economic Framework for Spectrum Allocation and Service Pricing with Competitive Wireless Service Providers

    Publication Year: 2007, Page(s):89 - 98
    Cited by:  Papers (53)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (213 KB) | HTML iconHTML

    In the future, we can expect to see more dynamic service offerings and profiles, as users move from long-term service provider agreements to more opportunistic service models. Moreover, when the radio spectrum is itself traded in a market- based scenario, wireless service providers (WSPs) will likely require new strategies to deploy services, define service profiles, and price them. Currently, the... View full abstract»

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  • Analysis of Communication Opportunities in UMTS Cellular Networks

    Publication Year: 2007, Page(s):99 - 102
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (414 KB) | HTML iconHTML

    A scenario based on an UMTS TDD opportunistic cellular system that operates over UMTS FDD licensed cellular networks is considered. Therefore a simulation tool was developed for the analysis and assessment of UMTS TDD opportunistic radio system in a coexistence environment with UMTS FDD primary cellular networks. The communication presents the scenario considered, the main features of the simulati... View full abstract»

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  • Applications of Topology Information for Cognitive Radios and Networks

    Publication Year: 2007, Page(s):103 - 114
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (351 KB) | HTML iconHTML

    The cognitive radio is a strong and promising paradigm for the next generation self-adaptive smart radios and networks. In this paper we study the potential applications of the topology information in a cognitive radio environment. We argue that use of network topology information, including here the geometric relations of the nodes, can bring significant benefits to cognitive radios and networks.... View full abstract»

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  • Applying Radio Environment Maps to Cognitive Wireless Regional Area Networks

    Publication Year: 2007, Page(s):115 - 118
    Cited by:  Papers (86)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB) | HTML iconHTML

    The IEEE 802.22 wireless regional area network (WRAN) is the first worldwide commercial application of cognitive radio (CR) networks refarming the TV broadcast bands. According to US FCC's recent public notice, WRAN products are scheduled to be available for the market by February, 2009. This paper first presents a brief review of the IEEE 802.22 WRAN standardization, and then introduces the radio... View full abstract»

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  • Blind OFDM Systems Parameters Estimation for Software Defined Radio

    Publication Year: 2007, Page(s):119 - 122
    Cited by:  Papers (15)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB) | HTML iconHTML

    In this paper, a blind OFDM system parameters estimation method for software defined radio (SDR) is proposed. This method sequentially estimate the sampling frequency, the number of subcarriers, the CP length as well as the timing and frequency offset in OFDM systems. The blind estimation is based on a combination of the cyclostationarity test and correlation. Monte Carlo simulation is employed to... View full abstract»

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  • Can Cognitive Radio Support Broadband Wireless Access?

    Publication Year: 2007, Page(s):123 - 132
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (245 KB) | HTML iconHTML

    One application of cognitive radios is to provide broadband wireless access (BWA) in the licensed TV bands on a secondary access basis. This concept is examined to see under what conditions BWA could be viable. Rural areas require long range communication which cognitive radios may not be able to support with enough secondary spectrum. Urban areas have less available spectrum and the BWA must use ... View full abstract»

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  • Channel Selection Under Interference Temperature Model in Multi-Hop Cognitive Mesh Networks

    Publication Year: 2007, Page(s):133 - 136
    Cited by:  Papers (23)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (202 KB) | HTML iconHTML

    A cooperative algorithm based on interference temperature model is proposed for computation of available channels by mesh nodes in a cognitive mesh network. Interference temperature model is used to model occupancy and availability of a channel. Link and end-to-end routing metrics are proposed to select appropriate channels from the computed set of available channels. View full abstract»

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