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Conservative Protection Criteria for TV Broadcasting Services from IEEE 802.22 WRAN IEEE 802.22无线局域网中电视广播业务的保守保护标准
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562523
Kimtho Po, J. Takada
{"title":"Conservative Protection Criteria for TV Broadcasting Services from IEEE 802.22 WRAN","authors":"Kimtho Po, J. Takada","doi":"10.1109/CROWNCOM.2008.4562523","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562523","url":null,"abstract":"IEEE 802.22 Wireless Regional Area Network (IEEE 802.22 WRAN) is considered for operating in the television (TV) bands without causing harmful interference to the primary users i.e. TV users. To tackle this problem, the authors propose an alternative method for calculating the protection distances between the WRAN devices and the TV protection contour where the WRAN devices are not permitted to radiate their powers since they may cause harmful interference to the TV users. The proposed calculation is similar to the one used for the impact study of ultra wideband (UWB) devices to the existing services in Japan. In this approach, the protection distances are calculated based on the interference-to-noise ratio (INR) at the TV receiver with respect to two deterministic propagation models. One is free space model and the other is spherical earth model. In addition, the comparison of the propagation loss and the protection distances between the proposed study and the conventional one are also presented.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125366679","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
Phase Noise Analysis of PLL Based Frequency Synthesizers for Multi-Radio Mobile Terminals 基于锁相环的多无线电移动终端频率合成器相位噪声分析
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562555
V. Valenta, G. Baudoin, M. Villegas
{"title":"Phase Noise Analysis of PLL Based Frequency Synthesizers for Multi-Radio Mobile Terminals","authors":"V. Valenta, G. Baudoin, M. Villegas","doi":"10.1109/CROWNCOM.2008.4562555","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562555","url":null,"abstract":"This paper deals with phase noise analysis and design aspects of PLL based frequency synthesizers for cognitive multi-radio mobile terminals. Principal features of PLL based frequency synthesizers are presented and simulated. This document describes various issues of the loop filter design and the overall impact on the frequency synthesizer performance in terms of the phase noise, settling time and the spurious suppression capability. Phase noise requirements for main communication standards in the frequency band 800 MHz to 6 GHz are investigated as well.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131566588","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
Policy and Technology of Dynamic Spectrum Access in Korea 韩国动态频谱接入政策与技术
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562456
Chang-Joo Kim, Cha-sik Leem, Sung-Chul Kang, Jaiyong Lee
{"title":"Policy and Technology of Dynamic Spectrum Access in Korea","authors":"Chang-Joo Kim, Cha-sik Leem, Sung-Chul Kang, Jaiyong Lee","doi":"10.1109/CROWNCOM.2008.4562456","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562456","url":null,"abstract":"In this paper, we introduce spectrum policies and dynamic spectrum access technologies in Korea. In the past, Korea spectrum management was the command and control with exclusive usage rights and small portions of spectrum commons bands. With the development of the radio technologies, recently, Korea government, MIC (Ministry of Information and Communication), has been adopting new spectrum policies based on dynamic spectrum access technology such as LBT (listen before talk) for RFID, UWB, and FACS (flexible access common spectrum) etc. MIC is also considering spectrum reallocation of digital dividend bands after DTV transition. New radio techniques such as cognitive radio and SDR will be applied to new services in this UHF band. MIC is trying to open the radio spectrum in an efficient way and adopt new technology into spectrum policy. Thus MIC is extending the open spectrum such as spectrum commons and spectrum liberalization bands.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122503164","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
Game Theoretic Analysis of Joint Channel Selection and Power Allocation in Cognitive radio Networks 认知无线网络中联合信道选择与功率分配的博弈论分析
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562549
Hao He, Jie Chen, Shoufeng Deng, Shaoqian Li
{"title":"Game Theoretic Analysis of Joint Channel Selection and Power Allocation in Cognitive radio Networks","authors":"Hao He, Jie Chen, Shoufeng Deng, Shaoqian Li","doi":"10.1109/CROWNCOM.2008.4562549","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562549","url":null,"abstract":"In this work, we formulate the potential game model of joint channel selection and power allocation. First, under the interference constraint, a nonlinear optimization problem is formulated for improving the total throughput and considering the fairness in cognitive radio network. we also define the special objective function for each transmitting node and formulate a potential game to solve this problem distributively. The Nash equilibria of this potential game is investigated. It is shown that the distributed sequential play converges to a Nash equilibrium point and quickly satisfy the interference constraint. Finally, through simulations, the performances are examined and we further investigate the relationship between the parameters of the objective function and the performances of the whole cognitive radio network.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116025600","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: 21
Detection Fusion by Hierarchy Rule for Cognitive Radio 基于层次规则的认知无线电探测融合
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562559
Wenzhong Wang, Wei-xia Zou, Zheng Zhou, Y. Ye
{"title":"Detection Fusion by Hierarchy Rule for Cognitive Radio","authors":"Wenzhong Wang, Wei-xia Zou, Zheng Zhou, Y. Ye","doi":"10.1109/CROWNCOM.2008.4562559","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562559","url":null,"abstract":"Cooperation between cognitive radio nodes is indispensable in order to mitigate the sensitivity requirement on individual radio and increase the reliability of spectrum sensing. Normally the fusion network is in parallel configuration and the conventional fusion rules are the k out of N rules because of their simplicity to manage. When the detection nodes are similar with each other i.e. their observations are from same probability distribution, the k out of N rules can make improvement to detection performance since they are equivalent to Neyman-Pearson criteria in this case. However the detection performance decreases greatly when the detection nodes are dissimilar due to fading and shadowing of radio channels especially when most of them are at low SNR states. The hierarchy fusion scheme we proposed in this paper incorporates both parallel and serial configuration and classifies detection nodes into different groups by their SNR levels. The receiver operating characteristic (ROC) of hierarchy fusion rule shows that the detection efficiency and reliability can be increased no matter the detection nodes are similar or dissimilar.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129420235","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
Frequency Sharing Secondary System with Carrier Sense Assisted by Cellular System 蜂窝系统辅助载波传感的频率共享二次系统
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562490
Anwida Prompijit, Chinnapat Sertthin, M. Nakagawa, T. Fujii
{"title":"Frequency Sharing Secondary System with Carrier Sense Assisted by Cellular System","authors":"Anwida Prompijit, Chinnapat Sertthin, M. Nakagawa, T. Fujii","doi":"10.1109/CROWNCOM.2008.4562490","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562490","url":null,"abstract":"Cognitive radio offers a tempting solution to increase the spectrum usage efficiency by proposing opportunistic usage of frequency bands among licensed users and secondary users. This paper focuses on mitigating the interference that may occur when the secondary user is unaware of the primary user's active period; known as hidden terminal problem. Path attenuation and shadowing effect are also considered. In this paper, in order to enhance the sensing capability of the cognitive radio system, we propose a cognitive radio system with the combination of active and passive awareness types, by the collaboration of carrier sense and cellular system. Here, we present the simulation results of the system with microwave relay as a primary user and ad hoc cognitive radio terminals as a secondary user. Three different cases are evaluated; the conventional system, the system with carrier sense, and the system with carrier sense assisted by cellular system.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127500597","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: 0
Distributed Autocorrelation-Based Sequential Detection of OFDM Signals in Cognitive Radios 认知无线电中基于分布式自相关的OFDM信号序列检测
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562525
S. Chaudhari, V. Koivunen, H. Poor
{"title":"Distributed Autocorrelation-Based Sequential Detection of OFDM Signals in Cognitive Radios","authors":"S. Chaudhari, V. Koivunen, H. Poor","doi":"10.1109/CROWNCOM.2008.4562525","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562525","url":null,"abstract":"This paper addresses the problem of collaborative spectrum sensing using sequential detection (SD) in cognitive radios. The goal of sequential processing is to reduce the delay and amount of data needed in identifying underutilized spectrum. Each secondary user (SU) employs a simple and computationally efficient autocorrelation-based detector for orthogonal frequency division multiplexing (OFDM) signals of the primary user (PU). The decision statistics from individual detectors are combined in a fusion center that may be a separate node or one of the secondary users. The statistical properties of the decision statistics are established. The performance of the scheme is studied by theory and simulations. A comparison of the SD scheme with the Neyman-Pearson fixed sample size (FSS) test for the same false alarm and missed detection probabilities is also carried out.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127390647","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: 35
A Bandwidth Pre-allocation Scheme for `Beyond 3G' Multi-standard Base Station Using Measurement-based Admission Control 基于测量的接纳控制的“超3G”多标准基站带宽预分配方案
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562488
Teck Kiong Lee, R. Jayabal
{"title":"A Bandwidth Pre-allocation Scheme for `Beyond 3G' Multi-standard Base Station Using Measurement-based Admission Control","authors":"Teck Kiong Lee, R. Jayabal","doi":"10.1109/CROWNCOM.2008.4562488","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562488","url":null,"abstract":"In a totally reconfigurable network, base stations can be viewed as amorphous entities that are dynamically configured to an optimal combination of radio access technologies based upon the time-varying user density and QoS requirements of the application traffic that they present or will present to it. In such a network, admission control is typically useful in providing load balancing and hotspot mitigation functionalities. In this paper, we propose to use a Measurement-based Admission Control (MBAC) to manage the allocation of baseband processing bandwidth in a multi-standard base station. Using realistic Voice and Video traffic traces, we highlight the MBAC performance in both homogeneous and heterogeneous traffic environments.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123000374","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: 0
Making the Best out of Spectral Efficiency; Studies on The Introduction of Open-Spectrum Policy 充分利用光谱效率;开放频谱策略引入研究
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562459
Cha-sik Leem, Jaiyong Lee, Hyunduk Kang, Chang-Joo Kim, Moonwon Lee, Sung-Chul Kang
{"title":"Making the Best out of Spectral Efficiency; Studies on The Introduction of Open-Spectrum Policy","authors":"Cha-sik Leem, Jaiyong Lee, Hyunduk Kang, Chang-Joo Kim, Moonwon Lee, Sung-Chul Kang","doi":"10.1109/CROWNCOM.2008.4562459","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562459","url":null,"abstract":"Open spectrum policy mostly deals with the shared-use of spectrum resources which again utilizes the orthogonality in different spectral domains - geography, space, power, frequency and time. Among these, temporal share of the spectrum, known as CR or cognitive radio technology, allows secondary licensees to opportunistically access the spectrum during the absence of the first. This paper provides the analysis on the performance of CR implementations in IEEE 802.22 WRAN system, in terms of the spectrum utilization rate, along with simulation results. Also discussed are the regulatory issues in introducing open spectrum policies into the market, centered on the reuse of spectrum resources.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130070279","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: 5
A Cross-layer Cognitive Radio Testbed for the Evaluation of Spectrum Sensing Receiver and Interference Analysis 一种用于频谱感知接收机评估与干扰分析的跨层认知无线电试验台
2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562483
Jongmin Park, Kwan-Woo Kim, T. Song, S. M. Lee, Joonhoi Hur, K. Lim, J. Laskar
{"title":"A Cross-layer Cognitive Radio Testbed for the Evaluation of Spectrum Sensing Receiver and Interference Analysis","authors":"Jongmin Park, Kwan-Woo Kim, T. Song, S. M. Lee, Joonhoi Hur, K. Lim, J. Laskar","doi":"10.1109/CROWNCOM.2008.4562483","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2008.4562483","url":null,"abstract":"Cognitive radio (CR) technology has been proposed as a promising solution for maximizing the utilization of already-crowded spectrum resources. As new algorithms, circuits and systems are developed for CR technology, it is essential to have a reconfigurable testbed system for their verification. A multistandard, fully software driven, cross-layer CR testbed has been developed to support thorough testing of CR system and custom designed integrated circuits (ICs). This paper presents details of cross-layer CR testbed and three demonstrations of testbed usage; (a) cognitive radio system concept demonstration, (b) multi-resolution spectrum sensing (MRSS) receiver IC evaluation, (c) interference analysis for UWB coexistence with WiMax. With this reconfigurable testbed, a new idea can be easily verified, demonstrated and extended to further research.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115693931","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: 22
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