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2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)最新文献

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Near optimal power allocation algorithm for OFDM-based cognitive using adaptive relaying strategy 基于认知自适应中继策略的ofdm近最优功率分配算法
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248500
Hamza Soury, F. Bader, M. Shaat, Mohamed-Slim Alouini
{"title":"Near optimal power allocation algorithm for OFDM-based cognitive using adaptive relaying strategy","authors":"Hamza Soury, F. Bader, M. Shaat, Mohamed-Slim Alouini","doi":"10.4108/ICST.CROWNCOM.2012.248500","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248500","url":null,"abstract":"Relayed transmission increases the coverage and achievable capacity of communication systems. Adaptive relaying scheme is a relaying technique by which the benefits of the amplifying or decode and forward techniques can be achieved by switching the forwarding technique according to the quality of the signal. A cognitive Orthogonal Frequency-Division Multiplexing (OFDM) based adaptive relaying protocol is considered in this paper. The objective is to maximize the capacity of the cognitive radio system while ensuring that the interference introduced to the primary user is below the tolerated limit. A Near optimal power allocation in the source and the relay is presented for two pairing techniques such that the matching and random pairing. The simulation results confirm the efficiency of the proposed adaptive relaying protocol, and the consequence of choice of pairing technique.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123674744","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: 7
Dynamic valuation function based definition of the primary spectrum user in collocated cellular networks 基于动态估值函数的并置蜂窝网络主频谱用户定义
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248463
M. Szydelko, J. Byrka, J. Oszmianski
{"title":"Dynamic valuation function based definition of the primary spectrum user in collocated cellular networks","authors":"M. Szydelko, J. Byrka, J. Oszmianski","doi":"10.4108/ICST.CROWNCOM.2012.248463","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248463","url":null,"abstract":"We propose to use generalization of a second price VCG auction to dynamically allocate shared radio resources among collocated, equally prioritized mobile network operators in multi carrier HSDPA cellular network. The spectrum usage priority will be dynamically decided based on the comparison of individual valuation functions, used as an input for the spectrum auctioning game. After theoretical introduction to the game theory, we demonstrate that short term auction based spectrum sharing provides spectrum utilization gains for coalition of MNO's having un-equall cell specific traffic loads, allowing network operators to secure their business and at the same time, open new market possibilities with additional revenue opportunities.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125116272","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: 7
Exploiting knowledge management for supporting spectrum selection in Cognitive Radio networks 利用知识管理支持认知无线电网络中的频谱选择
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248148
F. Bouali, O. Sallent, J. Pérez-Romero, R. Agustí
{"title":"Exploiting knowledge management for supporting spectrum selection in Cognitive Radio networks","authors":"F. Bouali, O. Sallent, J. Pérez-Romero, R. Agustí","doi":"10.4108/ICST.CROWNCOM.2012.248148","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248148","url":null,"abstract":"In order to increase Cognitive Radio operation efficiency, this paper builds up a new knowledge management functional architecture for supporting spectrum management. It integrates the fittingness factor concept proposed by the authors in a prior work and includes a set of advanced statistics capturing the influence of the radio environment. Then, a Knowledge Manager (KM) exploiting these statistics and observed fittingness factor values has been developed to monitor the time-varying suitability of spectrum resources to support heterogeneous services. Based on estimated suitability levels, a new strategy combining Spectrum Selection (SS) and Spectrum Mobility (SM) functionalities has been proposed. Results have shown that the proposed strategy efficiently exploits the KM support at low loads and the SM functionality at high loads to introduce significant gains (ranging from 85% to 100%) w.r.t. a pure random selection while exhibiting substantial robustness to changes in interference levels.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125257986","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: 15
A novel architectural framework and configuration scheme for spectrum sensing 一种新的频谱传感体系结构和配置方案
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248469
Abdoulaye Bagayoko, D. Panaitopol, Philippe Delahaye, Christian Mouton
{"title":"A novel architectural framework and configuration scheme for spectrum sensing","authors":"Abdoulaye Bagayoko, D. Panaitopol, Philippe Delahaye, Christian Mouton","doi":"10.4108/ICST.CROWNCOM.2012.248469","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248469","url":null,"abstract":"This paper proposes a novel architecture and configuration scheme for single-node spectrum sensing. It is assumed that the sensing node may use more than one sensing algorithms. The proposed sensing architecture allows a dynamic algorithm selection that depends on the sensing configuration parameters, and it includes a regulatory conformance checking. As a result, local sensing is enhanced by dynamic selection of the most reliable sensing algorithm, while a regulatory conformance indicator shows whether the current sensing result should be assumed reliable or not. Such information could be used further by a cooperative sensing system for efficient data fusion and decision making.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127774670","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: 1
Opportunistic spectrum access in cognitive radio based on channel switching 基于信道交换的认知无线电中的机会频谱接入
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248457
Fakhreddine Gaaloul, Hong-Chuan Yang, R. Radaydeh, Mohamed-Slim Alouini
{"title":"Opportunistic spectrum access in cognitive radio based on channel switching","authors":"Fakhreddine Gaaloul, Hong-Chuan Yang, R. Radaydeh, Mohamed-Slim Alouini","doi":"10.4108/ICST.CROWNCOM.2012.248457","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248457","url":null,"abstract":"This paper investigates the performance of a cognitive radio transceiver that can monitor multiple channels and opportunistically use any one of them should it be available. In our work, we propose and compare two different opportunistic channel access schemes. The first scheme applies when the secondary user (SU) has access to only one channel. The second scheme applies when the SU has access to multiple channels but can at a given time monitor and access only one channel. Two switching strategies, namely the switch and examine and the switch and stay strategies, are proposed. For these proposed access schemes, we investigate their performance by deriving the analytical expression of the novel metric of the average access duration and the average waiting time and based on these two metrics a time average SU throughput formula is proposed to predict the performance of the secondary cognitive system.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127948953","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
Optimal cost-based strategies in mobile network offloading 基于最优成本的移动网络卸载策略
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248505
Kimmo Berg, M. Katsigiannis
{"title":"Optimal cost-based strategies in mobile network offloading","authors":"Kimmo Berg, M. Katsigiannis","doi":"10.4108/ICST.CROWNCOM.2012.248505","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248505","url":null,"abstract":"This article examines potential deployment strategies for mobile operators to satisfy the high anticipated data traffic volume in their mobile networks. The mobile network offloading is analyzed with the traditional evolution of macrocellular radio access networks. Cognitive radio is considered as a technology that may augment these deployment strategies. A duopoly model is developed to examine where and when mobile offloading is likely to happen. The results show how much offloading there will be and the exact conditions when it is profitable based on the estimated cost parameters and the future demands. An illustrative case study in Helsinki metropolitan area is examined for year 2015.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129115164","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: 10
Reliability of a radio environment Map: Case of spatial interpolation techniques 无线电环境图的可靠性:空间插值技术的案例
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248452
D. Denkovski, V. Atanasovski, L. Gavrilovska, Janne Riihijärvi, P. Mähönen
{"title":"Reliability of a radio environment Map: Case of spatial interpolation techniques","authors":"D. Denkovski, V. Atanasovski, L. Gavrilovska, Janne Riihijärvi, P. Mähönen","doi":"10.4108/ICST.CROWNCOM.2012.248452","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248452","url":null,"abstract":"Recent advances in radio environmental mapping enable novel, practical and efficient cognitive radio and dynamic spectrum access solutions. A crucial aspect of such solutions is to ensure the reliability of the constructed Radio Environmental Maps (REMs). Especially important is the accurate and up-to-date Radio Interference Field (RIF) estimation based on distributed spectrum use measurements. This paper analyzes the use of spatial interpolation techniques that allow robust, yet sufficiently reliable, RIF estimation from a limited number of field measurements. Several spatial interpolation techniques based on Inverse Distance Weighting (IDW) are analyzed and compared in terms of reliability bounds of the interpolation errors for an indoor environment. Performance evaluation using REM prototype implementation and a wireless testbed shows that the spatial interpolation techniques can provide a robust and reliable RIF estimation within the entire REM concept.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122203579","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: 78
Wideband frequency domain detection using Teager-Kaiser energy operator 基于Teager-Kaiser能量算子的宽带频域检测
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248336
M. Gautier, V. Berg, D. Noguet
{"title":"Wideband frequency domain detection using Teager-Kaiser energy operator","authors":"M. Gautier, V. Berg, D. Noguet","doi":"10.4108/ICST.CROWNCOM.2012.248336","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248336","url":null,"abstract":"This paper addresses wireless microphone sensing in the TV white space and efficient detection of narrowband FM modulation signals. To this end, a wideband frequency domain analysis is proposed. The required Fast Fourier Transform for this operation may be shared between sensing analysis and modulation functions. A particular decision metric is then studied for the analysis of wireless microphone signals based on the Teager-Kaiser energy operator. Simulation results show that 6 dB of detection gain could be achieved when using a frequency domain analysis compared to time domain methods. The Teager-Kaiser detection leads to further improvement of 1.5 dB. This performance could be reached at no extra cost in term of complexity.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133201766","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: 11
Evaluation of multi-objective optimizers for cognitive radio using psychometric methods: Analysis using unidimensional and multidimensional Rasch models 使用心理测量方法评估认知无线电的多目标优化器:使用一维和多维Rasch模型进行分析
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248438
C. Dietrich, E. Wolfe, Garrett M. Vanhoy
{"title":"Evaluation of multi-objective optimizers for cognitive radio using psychometric methods: Analysis using unidimensional and multidimensional Rasch models","authors":"C. Dietrich, E. Wolfe, Garrett M. Vanhoy","doi":"10.4108/ICST.CROWNCOM.2012.248438","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248438","url":null,"abstract":"Item response models (IRMs) developed for use in fields such as education and psychology are applicable to cognitive radio testing due to parallels between cognitive radio and human cognition appear likely to enable efficient, and possibly adaptive testing of cognitive radios. A simulation study used unidimensional and multidimensional item response models to evaluate multi-objective cognitive engine optimizers based on two types of optimization algorithm: genetic algorithms and generalized pattern search. Data are presented in the context of cognitive radio and data are presented in a format that enables visualization of some characteristics of test items (optimization tasks) and optimizer performance identified by the IRMs. While the visualization provides intuitive confirmation of the IRM results, the IRMs identified additional significant effects that are not readily visible.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131806636","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: 4
Per-node throughput performance of overlapping Cognitive Radio networks 重叠认知无线电网络的每节点吞吐量性能
2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) Pub Date : 2012-06-18 DOI: 10.4108/ICST.CROWNCOM.2012.248460
Jari Nieminen, Lijun Qian, R. Jäntti
{"title":"Per-node throughput performance of overlapping Cognitive Radio networks","authors":"Jari Nieminen, Lijun Qian, R. Jäntti","doi":"10.4108/ICST.CROWNCOM.2012.248460","DOIUrl":"https://doi.org/10.4108/ICST.CROWNCOM.2012.248460","url":null,"abstract":"Multiple Cognitive Radio (CR) networks may exist in the same spatial domain in many cases. In this paper we consider two uncoordinated and geographically overlapping CR networks coexisting together with a primary network. We specifically study the achievable per-node throughput performance of the CR networks. Firstly, an interference model is specified which models the situation. By using this model we derive the per-node throughput for overlapping CR networks. Furthermore, the upper bound for the probability of false alarm, which is required to achieve a certain throughput, is deduced. The results of this paper illustrate how the different CR network parameters, such as network density, transmission probability, and sensing performance, affect the achievable per-node throughput in overlapping CR networks. In addition, these results serve as guidance for the deployment of multiple CR networks.","PeriodicalId":286843,"journal":{"name":"2012 7th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115143751","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: 6
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