发布求助
文献互助 智能选刊 最新文献

2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications最新文献

筛选
英文 中文
Spectrum Sharing for WINNER Radio Access Networks WINNER无线接入网络的频谱共享
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363462
J. Kermoal, S. Pfletschinger, K. Hooli, S. Thilakawardana, Juan Lara, Yutao Zhu
{"title":"Spectrum Sharing for WINNER Radio Access Networks","authors":"J. Kermoal, S. Pfletschinger, K. Hooli, S. Thilakawardana, Juan Lara, Yutao Zhu","doi":"10.1109/CROWNCOM.2006.363462","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363462","url":null,"abstract":"This paper presents the concept of spectrum sharing in connection to beyond 3rd generation (B3G) systems. Inter-system spectrum sharing mechanisms are summarised and classified depending on their coordination capabilities and the relative priorities between the systems involved in the sharing. Novel radio resource management (RRM) functionalities for coordinating the sharing of the spectrum with legacy systems and other B3G radio access networks (RANs) are outlined to permit the efficient implementation of spectrum sharing. These B3G spectrum sharing RRM functionalities are proposed in the context of the European IST WINNER project. Capabilities to share spectrum with other radio access systems will significantly increase the efficiency of the WINNER system as well as the compatibility with legacy systems. The RRM architecture enables WINNER systems to benefit from the most important aspects of the envisioned spectrum sharing. Spectrum sharing provides the WINNER system with new spectrum access possibilities, facilitating flexible deployment, usage and a gradual evolution of the system in coexistence with legacy systems","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"79 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132756405","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: 12
Coexistence Issues in Cognitive Radios Based on Ultra-Wide Bandwidth Systems 基于超宽带系统的认知无线电共存问题
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363461
A. Giorgetti, M. Chiani, D. Dardari
{"title":"Coexistence Issues in Cognitive Radios Based on Ultra-Wide Bandwidth Systems","authors":"A. Giorgetti, M. Chiani, D. Dardari","doi":"10.1109/CROWNCOM.2006.363461","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363461","url":null,"abstract":"In this paper we discuss the basic concepts underlying cognitive radio (CR) and investigate the ultra wide bandwidth (UWB) technology as one of the enabling transmission techniques for the implementation of CR systems. Firstly, we propose an analytical methodology to assess the interference impact and coexistence issues between narrowband (NB) and UWB communication systems in a realistic scenario. Then, based on this methodology we show the great potential of the UWB technology in adapting the transmitted spectrum to counteract NB interference and at the same time to guarantee low spectral emissions over existing narrowband communications","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127903805","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: 14
Diversity-Multiplexing Tradeoff for Frequency Fading Channels with CSIT 基于CSIT的频率衰落信道分集-复用权衡
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363470
Majed Haddad, M. Debbah, A. Hayar
{"title":"Diversity-Multiplexing Tradeoff for Frequency Fading Channels with CSIT","authors":"Majed Haddad, M. Debbah, A. Hayar","doi":"10.1109/CROWNCOM.2006.363470","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363470","url":null,"abstract":"In this contribution, we analyse the performance limits of a multiband frequency fading channels when perfect channel state information is available at the transmitter (CSIT). For various power allocation (RA) schemes such as water-filling, channel inversion and Haye's policy, we derive optimal constant-rate coding schemes that minimizes the information outage probability and show the potential gain of such techniques with respect to classical uniform power allocation","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129008243","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
Modified Adjacent Frequency Coding for Increased Notch Depth in MB-OFDM under DAA/Spectral Sculpting DAA/频谱雕刻下MB-OFDM中增加陷波深度的改进邻频编码
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363477
K. Shelby, Johann Chiang, J. Lansford
{"title":"Modified Adjacent Frequency Coding for Increased Notch Depth in MB-OFDM under DAA/Spectral Sculpting","authors":"K. Shelby, Johann Chiang, J. Lansford","doi":"10.1109/CROWNCOM.2006.363477","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363477","url":null,"abstract":"The current regulatory outlook indicates the need for some Detect and Avoid (DAA) mechanism aimed at mitigating the effects of UWB interference on incumbent radio services. This paper presents a revised method for increasing the notch depth at an MB-OFDM WiMedia PHY transmitter operating under DAA guidelines in the presence of protected in-band services.","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115405500","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
On the Coexistence of Infrastructure-Based and Ad Hoc Connections for a Cognitive Radio System 认知无线电系统中基于基础设施和自组织连接共存的研究
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363449
Li-Chun Wang, Anderson Chen
{"title":"On the Coexistence of Infrastructure-Based and Ad Hoc Connections for a Cognitive Radio System","authors":"Li-Chun Wang, Anderson Chen","doi":"10.1109/CROWNCOM.2006.363449","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363449","url":null,"abstract":"Cognitive radio (CR) can sense the current spectrum usage of existing networks and make intelligent decisions on the opportunity of reusing the frequency spectrum. One fundamental issue for the CR system is how to rapidly establish a temporary communication link on the spectrum of the exiting users. In this paper, we investigate the feasibility issue of establishing both an infrastructure-based link and an ad hoc link using the same spectrum simultaneously in an overlapped area. We also present a cross-layer performance analysis from both the physical (PHY) layer and medium access control (MAC) layer perspectives. The analytical results show that the probability that both an infrastructure-based connection and an ad hoc link coexist in an overlapping area can be as high as 45%. In addition the normalized total throughput of the both links is more than 145% compared to the pure infrastructure-based link. However, considering the shadowing effects, the transmission reliability varies from 30% ~ 90% depending on the locations of mobile stations","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"62 15","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120883645","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
Credit Token based Rental Protocol for Dynamic Channel Allocation 基于信用令牌的动态信道分配租赁协议
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363463
D. Grandblaise, K. Moessner, G. Vivier, R. Tafazolli
{"title":"Credit Token based Rental Protocol for Dynamic Channel Allocation","authors":"D. Grandblaise, K. Moessner, G. Vivier, R. Tafazolli","doi":"10.1109/CROWNCOM.2006.363463","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363463","url":null,"abstract":"This paper describes a distributed, cooperative and real time rental protocol for DCA operations in a multi system and multi cell context for OFDMA systems. A credit token based rental protocol using auctioning is proposed in support of dynamic spectrum sharing between cells. The proposed scheme can be tuned adaptively as a function of the context by specifying the credit tokens usage in the radio etiquette. The application of the rental protocol is illustrated with an ascending bid auctioning. The paper also describes two approaches for BS-BS communications in support of the rental protocol. Finally, it is described how the proposed mechanisms contribute to the current approaches followed in the IEEE 802.16h and IEEE 802.22 standards efforts addressing cognitive radio","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130010736","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: 28
Performance of the OFDM-based Transform Domain Communication System in Cognitive Radio contexts 认知无线电环境下基于ofdm的变换域通信系统性能研究
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363469
Chuan Han, Jun Wang, Shuping Gong, Shaoqian Li
{"title":"Performance of the OFDM-based Transform Domain Communication System in Cognitive Radio contexts","authors":"Chuan Han, Jun Wang, Shuping Gong, Shaoqian Li","doi":"10.1109/CROWNCOM.2006.363469","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363469","url":null,"abstract":"In this paper, performance in term of BER of the OFDM-based TDCS is investigated in realistic CR contexts. According to the analyses and simulation results, it is observed that the OFDM-based TDCS operates better in random spectrum availability contexts than in continuous spectrum availability ones. Geometrical explanations are provided to give some insights to this phenomenon. Based on the explications, a new interleaved OFDM-based TDCS is proposed. Computer simulation results verify that the new proposal outperforms the OFDM-based TDCS without an interleaver, especially in the scenario where the percentage of available spectrum is rather low","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115246815","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: 20
A Scalable Baseband Platform for Energy-Efficient Reactive Software-Defined-Radio 一种可扩展的高能效无功软件无线电基带平台
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363450
B. Bougard, D. Novo, F. Naessens, L. Hollevoet, T. Schuster, M. Glassée, A. Dejonghe, L. Perre
{"title":"A Scalable Baseband Platform for Energy-Efficient Reactive Software-Defined-Radio","authors":"B. Bougard, D. Novo, F. Naessens, L. Hollevoet, T. Schuster, M. Glassée, A. Dejonghe, L. Perre","doi":"10.1109/CROWNCOM.2006.363450","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363450","url":null,"abstract":"The spectrum data-mining and agile air interface requirements of cognitive radios claim for software-defined-radio (SDR) implementations. The need to detect and/or generate virtually any kind of waveform in any band pushes the specification of such SDR to the limit. This makes cost-effective and energy-efficient implementation very challenging. As a first step toward effective embedded cognitive radio, we present the design, based on a top-down methodology, of a scalable SDR platform that enables spectrum environment awareness and reactive transmission. Hardware cost and energy-efficiency are contended by opportunistic partitioning and aggressive power management leading to 10 mW-range standby power and 100 mW-range active power","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134411429","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
A Reciprocal MIMO-UWB Radio Channel Deterministic Modeling Framework 一种互反MIMO-UWB无线电信道确定性建模框架
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363455
B. Uguen, Louis-Marie Aubert, F. Tchoffo-Talom
{"title":"A Reciprocal MIMO-UWB Radio Channel Deterministic Modeling Framework","authors":"B. Uguen, Louis-Marie Aubert, F. Tchoffo-Talom","doi":"10.1109/CROWNCOM.2006.363455","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363455","url":null,"abstract":"In order to evaluate specific cognitive radio techniques. A deterministic MIMO-UWB channel simulator based on frequency domain geometrical optics-uniform theory of diffraction (GO-UTD) is developed. This paper presents the theoretical framework used in the simulator. It exhibits the reciprocity of the transmission channel. It is well adapted for both practical ray tracing implementation and digital communication channel model realization","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117133036","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
Implementation Issues of A Wideband Multi-Resolution Spectrum Sensing (MRSS) Technique for Cognitlve Radio (CR) Systems 认知无线电(CR)系统中宽带多分辨率频谱感知(MRSS)技术的实现问题
2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications Pub Date : 2006-06-08 DOI: 10.1109/CROWNCOM.2006.363471
Jongmin Park, Y. Hur, T. Song, Kwan-Woo Kim, Jungsuk Lee, K. Lim, Chang-Ho Lee, Haksun Kim, J. Laskar
{"title":"Implementation Issues of A Wideband Multi-Resolution Spectrum Sensing (MRSS) Technique for Cognitlve Radio (CR) Systems","authors":"Jongmin Park, Y. Hur, T. Song, Kwan-Woo Kim, Jungsuk Lee, K. Lim, Chang-Ho Lee, Haksun Kim, J. Laskar","doi":"10.1109/CROWNCOM.2006.363471","DOIUrl":"https://doi.org/10.1109/CROWNCOM.2006.363471","url":null,"abstract":"Spectrum sensing is a key function for a cognitive radio (CR) system. An analog-based multi-resolution spectrum sensing (MRSS) technique was proposed as a flexible, low-power, high-speed spectrum-sensing solution. In this paper, implementation issues of the MRSS technique are investigated, and the corresponding practical specifications are suggested. First, nonlinear effects from a voltage-controlled oscillator (VCO) and multipliers are explored. System simulation results show that harmonic distortion components of VCO and wavelet-pulse power levels should be controlled to alleviate these nonlinear effects. Afterward, I/Q phase- and gain-mismatch effects ore addressed. Specifically, narrow-band signals are more sensitive to these gain and phase mismatches compared to broadband digital modulated signals. Overall, phase mismatch is more sensitive than gain mismatch on MRSS performance, showing a linear degradation of a detected power-level up to a 60-degree phase-mismatch","PeriodicalId":422961,"journal":{"name":"2006 1st International Conference on Cognitive Radio Oriented Wireless Networks and Communications","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126972109","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: 29
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信