2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)最新文献_第8页

Cognitive radio developments for emergency communication systems 应急通信系统的认知无线电发展

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936265

P. Conder, L. Linton, M. Faulkner

引用次数: 7

Reinforcement learning based distributed multiagent sensing policy for cognitive radio networks 基于强化学习的认知无线网络分布式多智能体感知策略

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936261

J. Lundén, V. Koivunen, S. Kulkarni, H. Poor, Smarad CoE

引用次数: 48

Finding green spots and turning the spectrum dial: Novel techniques for green mobile wireless networks 寻找绿点和改变频谱刻度:绿色移动无线网络的新技术

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936255

G. Fusco, M. Buddhikot, Himanshu Gupta, S. Venkatesan

引用次数: 17

The theoretical performance of ATSC spectrum sensing ATSC频谱感知的理论性能

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-05-03 DOI: 10.1109/DYSPAN.2011.5936242

S. Shellhammer

引用次数: 2

Adaptive channel recommendation for dynamic spectrum access 动态频谱接入的自适应信道推荐

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-02-23 DOI: 10.1109/DYSPAN.2011.5936198

Xu Chen, Jianwei Huang, Husheng Li

引用次数: 19

Contract-based cooperative spectrum sharing 基于契约的合作频谱共享

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2011-02-21 DOI: 10.1109/DYSPAN.2011.5936229

Lingjie Duan, Lin Gao, Jianwei Huang

{"title":"Contract-based cooperative spectrum sharing","authors":"Lingjie Duan, Lin Gao, Jianwei Huang","doi":"10.1109/DYSPAN.2011.5936229","DOIUrl":"https://doi.org/10.1109/DYSPAN.2011.5936229","url":null,"abstract":"Providing proper economic incentives is essential for the success of dynamic spectrum sharing. Cooperative spectrum sharing is one effective way to achieve this goal. In cooperative spectrum sharing, secondary users (SUs) relay traffics for primary users (PUs), in exchange for dedicated transmission time for the SUs' own communication needs. In this paper, we study the cooperative spectrum sharing under incomplete information, where SUs' types (which capture the relay channel gains and the SUs' power costs) are private information and are not known to the PU. Inspired by the contract theory, we model the network as a labor market. The PU is an employer who offers a contract to the SUs. The contract consists of a set of items representing combinations of spectrum access time (i.e., reward) and relay power (i.e., contribution). The SUs are employees, and each of them selects the best contract item to maximize its payoff. We study the optimal contract design for both weakly and strongly incomplete information scenarios. First, we provide necessary and sufficient conditions for feasible contracts in both scenarios. In the weakly incomplete information scenario, we further derive the optimal contract that achieves the same maximum PU's utility as in the complete information benchmark. In the strongly incomplete information scenario, we propose a Decompose-and-Compare algorithm that achieves a close-to-optimal contract. We further show that the PU's expected utility loss due to the suboptimal algorithm and the strongly incomplete information are both relatively small (less than 2% and 1.3%, respectively, in our numerical results with two SU types).","PeriodicalId":119856,"journal":{"name":"2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116424560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 111

Adaptive sensing and transmission durations for cognitive radios 认知无线电的自适应感知和传输持续时间

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 2010-12-02 DOI: 10.1109/DYSPAN.2011.5936227

Wessam Afifi, Ahmed Sultan, M. Nafie

{"title":"Adaptive sensing and transmission durations for cognitive radios","authors":"Wessam Afifi, Ahmed Sultan, M. Nafie","doi":"10.1109/DYSPAN.2011.5936227","DOIUrl":"https://doi.org/10.1109/DYSPAN.2011.5936227","url":null,"abstract":"In a cognitive radio setting, secondary users opportunistically access the spectrum allocated to primary users. Finding the optimal sensing and transmission durations for the secondary users becomes crucial in order to maximize the secondary throughput while protecting the primary users from interference and service disruption. In this paper an adaptive sensing and transmission scheme for cognitive radios is proposed. We consider a channel allocated to a primary user which operates in an unslotted manner switching activity at random times. A secondary transmitter adapts its sensing and transmission durations according to its belief regarding the primary user state of activity. The objective is to maximize a secondary utility function. This function has a penalty term for collisions with primary transmission. It accounts for the reliability-throughput tradeoff by explicitly incorporating the impact of sensing duration on secondary throughput and primary activity detection reliability. It also accounts for throughput reduction that results from data overhead. Numerical simulations of the system performance demonstrate the effectiveness of adaptive sensing and transmission scheme over non-adaptive approach in increasing the secondary user utility.","PeriodicalId":119856,"journal":{"name":"2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127506331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

SenseLess: A database-driven white spaces network 无意义:一个数据库驱动的空白网络

2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN) Pub Date : 1900-01-01 DOI: 10.1109/dyspan.2011.5936197

Rohan Murty, Ranveer Chandra, T. Moscibroda, P. Bahl

{"title":"SenseLess: A database-driven white spaces network","authors":"Rohan Murty, Ranveer Chandra, T. Moscibroda, P. Bahl","doi":"10.1109/dyspan.2011.5936197","DOIUrl":"https://doi.org/10.1109/dyspan.2011.5936197","url":null,"abstract":"The most recent FCC ruling proposes relying on a database of incumbents as the primary means of determining white space availability at any white spaces device (WSD). While the ruling provides broad guidelines for the database, the specifics of its design, features, implementation, and use are yet to be determined. Furthermore, architecting a network where all WSDs rely on the database raises several systems and networking challenges that have remained unexplored. Also, the ruling treats the database only as a storehouse for incumbents. We believe that the mandated use of the database has an additional opportunity: a means to dynamically manage the RF spectrum. Motivated by this opportunity, in this paper we present SenseLess, a database driven white spaces network. As suggested by its very name, in SenseLess, WSDs obviate the need to sense the spectrum by relying entirely on a database service to determine white spaces availability. The service, using a combination of an up-to-date database of incumbents, sophisticated signal propagation modeling, and an efficient content dissemination mechanism ensures efficient, scalable, and safe white space network operation. We build, deploy, and evaluate SenseLess and compare our results to ground truth spectrum measurements. We present the unique system design considerations that arise due to operating over the white spaces. We also evaluate its efficiency and scalability. To the best of our knowledge, this is the first paper that identifies and examines the systems and networking challenges that arise from operating a white space network, which is solely dependent on a channel occupancy database.","PeriodicalId":119856,"journal":{"name":"2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128447810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 305