2012 IEEE International Symposium on Dynamic Spectrum Access Networks最新文献_第6页

White Spaces potentially available in Italian scenarios based on the geo-location database approach 基于地理位置数据库方法的意大利场景中可能可用的空白空间

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478165

M. Barbiroli, C. Carciofi, D. Guiducci, V. Petrini

引用次数: 14

Physical layer authentication using controlled inter symbol interference 使用受控符号间干扰的物理层认证

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478149

Vireshwar Kumar, J. Park, Jaeweon Kim, Ahsan Aziz

引用次数: 3

Receiver-driven handover between independent networks 独立网络之间的接收端驱动切换

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478142

J. Tallon, Jacek Kibiłda, T. Forde, L. Dasilva, L. Doyle

引用次数: 1

Is wireless broadband provision to rural communities in TV whitespaces viable? A UK case study and analysis 在电视空白区向农村社区提供无线宽带是否可行?英国案例研究与分析

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478170

S. Kawade, M. Nekovee

引用次数: 11

Practical radio environment mapping with geostatistics 实用无线电环境测绘与地质统计学

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478166

Caleb T. Phillips, M. Ton, D. Sicker, D. Grunwald

引用次数: 123

Spectrum utilization efficiency of cognitive radio systems with limited sampling capability: The impact of spectrum non-contiguity 有限采样能力的认知无线电系统频谱利用效率:频谱非邻接的影响

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478117

Husheng Li, S. Dehnie, V. Chakravarthy, Zhiqiang Wu, Yao Ma, D. Walter

引用次数: 6

GLRT based cooperative spectrum sensing with soft combination in heterogeneous networks 异构网络中基于GLRT的软组合协同频谱感知

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478162

Jun Luo, Jun Wang, Qiang Li, Shaoqian Li

{"title":"GLRT based cooperative spectrum sensing with soft combination in heterogeneous networks","authors":"Jun Luo, Jun Wang, Qiang Li, Shaoqian Li","doi":"10.1109/DYSPAN.2012.6478162","DOIUrl":"https://doi.org/10.1109/DYSPAN.2012.6478162","url":null,"abstract":"As it is not suffered by the well-known noise uncertainty problem of energy detection (ED), generalized likelihood ratio test (GLRT) based spectrum sensing schemes for a single secondary user node have recently been extensively addressed. In this paper, we extend the existing research to an optimal GLRT based cooperative spectrum sensing scheme in a heterogeneous network scenario, where each node can be equipped with different number of antennas and have different signal processing capacity, such as sampling rate. By considering the discrepancy of different secondary user nodes' sensing reliability due to different hardware configuration, we demonstrate that the optimal cooperative spectrum sensing scheme based on GLRT is a linear combination of each node's local test statistic. Moreover, the local test statistic is the logarithm of the arithmetic-to-geometric mean ratio of the eigenvalues associated with the sample covariance matrix. Furthermore, the optimal combining coefficient is a simple function of the numbers of the antennas and the received signal samples at each secondary user node, which can be intrinsically provided by each secondary user node without any prior information. Numerical results show that the proposed GLRT based cooperative spectrum sensing scheme performs better than the practical ED based scheme, i.e., equal gain combination based ED, especially under the case where the sensing reliability discrepancy of each secondary user node is significant.","PeriodicalId":224818,"journal":{"name":"2012 IEEE International Symposium on Dynamic Spectrum Access Networks","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125590684","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: 2

An RF spectrum observatory database based on a Hybrid Storage System 基于混合存储系统的射频频谱观测站数据库

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478122

George Noorts, J. Engel, Jesse Taylor, D. Roberson, R. Bacchus, Tanim M. Taher, K. Zdunek

引用次数: 18

QP-CSMA-CA: A modified CSMA-CA-based cognitive channel access mechanism with testbed implementation QP-CSMA-CA:一种改进的基于csma - ca的认知通道访问机制，并提供了测试平台实现

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478174

Chittabrata Ghosh, Hossein-Ali Safavi-Naeini, Sumit Roy, K. Doppler, Joshua Stahl

{"title":"QP-CSMA-CA: A modified CSMA-CA-based cognitive channel access mechanism with testbed implementation","authors":"Chittabrata Ghosh, Hossein-Ali Safavi-Naeini, Sumit Roy, K. Doppler, Joshua Stahl","doi":"10.1109/DYSPAN.2012.6478174","DOIUrl":"https://doi.org/10.1109/DYSPAN.2012.6478174","url":null,"abstract":"In this paper, a modified carrier sense multiple access-collision avoidance (CSMA-CA) mechanism, termed as quiet period-CSMA-CA (QP-CSMA-CA) is proposed, for the purposes of coexistence in a cognitive networking set-up with secondary clients that seek access using 802.11. In work to date, dedicated quiet periods have been defined for this purpose, as a synchronized duration wherein all clients are prohibited from uplink transmissions; this interval is intended for sensing channel status so as to detect out-of-network transmissions. However, such dedicated periods may adversely impact system throughput as the price for coexistence. In QP-CSMA-CA, the Wi-Fi nodes perform channel sensing during an extended back-off phase; thereby bypassing the need for separate dedicated sensing interval. The proposed QP-CSMA-CA protocol is implemented on the universal software radio peripheral (USRP)-based software defined radio platform and configured in a small network for measuring throughput and latency. Experimental and simulation results show the efficacy of the proposed algorithm over the dedicated sensing-based mechanism when compared in terms of system throughput and medium access latency.","PeriodicalId":224818,"journal":{"name":"2012 IEEE International Symposium on Dynamic Spectrum Access Networks","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121295603","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: 8

The hinges of destiny: A decision analysis of spectrum users' choices 命运的关键:频谱用户选择的决策分析

2012 IEEE International Symposium on Dynamic Spectrum Access Networks Pub Date : 2012-10-01 DOI: 10.1109/DYSPAN.2012.6478128

M. Weiss, Liu Cui

{"title":"The hinges of destiny: A decision analysis of spectrum users' choices","authors":"M. Weiss, Liu Cui","doi":"10.1109/DYSPAN.2012.6478128","DOIUrl":"https://doi.org/10.1109/DYSPAN.2012.6478128","url":null,"abstract":"Dynamic spectrum access (DSA) has been a technological approach that has received considerable research attention over the past decade. At the same time, the relative paucity of deployed systems using some of these technologies speaks to either a mismatch between research priorities and practical needs, regulatory immaturity, technology immaturity, or a combination of these. In this paper, we examine the business decision that a spectrum entrant must take with regard to technology choice. We use a simple decision-analytic framework using standard Net Present Value (NPV) calculations to analyze that decision. Our conclusion is that, the spectrum decision is time dependent. Exclusive use offers a higher NPV than the alternatives in the long run, but it takes time for exclusive use to become the dominant choice. Cooperative sharing provides the second highest NPV when the spectrum market is liquid, followed by opportunistic sharing under optimistic spectrum availability and contention assumptions. If our assumptions are relatively close to reality, it is therefore not surprising that we do not see greater adoption of DSA technologies - it is not the top choice for spectrum entrants with a long term view. The second choice, cooperative sharing, does occur, but in the form of MVNO agreements. The last option for a spectrum entrant is opportunistic sharing. Why should an entrant settle for the third best approach?","PeriodicalId":224818,"journal":{"name":"2012 IEEE International Symposium on Dynamic Spectrum Access Networks","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128340171","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: 3