2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)最新文献_第10页

Signal Detection Scheme for MB-OFDM through Fractional Sampling 基于分数采样的MB-OFDM信号检测方案

2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-15 DOI: 10.1109/CROWNCOM.2008.4562530

Akio Kobori, Y. Kato, Y. Sanada

引用次数: 0

Adaptive Network Layer for Cognitive Radio Networks 认知无线网络的自适应网络层

2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-01 DOI: 10.1109/CROWNCOM.2008.4562533

M. Pitchaimani, D. Jeyaraman, Joseph B. Evans

引用次数: 2

Accumulative Interference Modeling for Cognitive Radios with Distributed Channel Access 分布式信道接入下认知无线电的累积干扰建模

2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-01 DOI: 10.1109/CROWNCOM.2008.4562479

M. Timmers, S. Pollin, A. Dejonghe, A. Bahai, L. Perre, F. Catthoor

引用次数: 31

An Estimation Algorithm of Channel State Transition Probabilities for Cognitive Radio Systems 认知无线电系统信道状态转移概率估计算法

2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 2008-05-01 DOI: 10.1109/CROWNCOM.2008.4562505

Xin Long, Xiaoying Gan, Youyun Xu, J. Liu, M. Tao

引用次数: 26

Keynote Speaker 主讲人

2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 1900-01-01 DOI: 10.1109/comswa.2007.382550

Geok-Leng Tan

{"title":"Keynote Speaker","authors":"Geok-Leng Tan","doi":"10.1109/comswa.2007.382550","DOIUrl":"https://doi.org/10.1109/comswa.2007.382550","url":null,"abstract":"One look at the radio spectrum allocation chart of any country is likely to show that most of the spectrum below 6GHz has already been allocated. This has given rise to the perception that radio frequency spectrum is in short supply. But, are we really running out of radio frequency spectrum? Analysis of intensity of radio spectrum usage over frequency, time and space by various groups in the United States and the UK has shown that in actuality, the radio spectrum is only used about 15% of the time on an average basis. IDA Singapore in collaboration with the Institute for Infocomm Research (I2R) has conducted a short study to look at the intensity of use of radio spectrum in Singapore. This study, which is by no means comprehensive, does give a snapshot of spectrum usage in a certain area of Singapore. Our measurement results show that the average spectrum utilization in the frequency band from 80MHz to 5.85GHz is below 5%. Furthermore, we can clearly see that certain bands are completely free because they are set aside because of cross-border spectrum coordination with our neighbouring countries. Given that the actual spectrum use intensity is relatively low in US, UK and now demonstrated, albeit on a sample basis in Singapore, it may be possible to explore the use of cognitive radio technologies to intensify the use of spectrum, provided it does not cause interference to the primary users.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128432929","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

Keynote Speaker 主讲人

2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 1900-01-01 DOI: 10.1109/cne.2007.369586

S. Ólafsson

{"title":"Keynote Speaker","authors":"S. Ólafsson","doi":"10.1109/cne.2007.369586","DOIUrl":"https://doi.org/10.1109/cne.2007.369586","url":null,"abstract":"The rapid growth in the density of wireless access devices, accompanied by increasing heterogeneity in wireless technologies, requires adaptive allocation and reallocation of spectrum. The traditional allocation of spectrum does not allow for its flexible utilisation. These shortcomings call for new ways to access spectrum, for example through opportunistic spectrum usage and spectrum trading. As technologies emerge on ever-faster time-scales spectrum trading on shorter and shorter time-scales will eventually create the basis for a real-time and liquid market in spectrum. This process will be accompanied by rapidly developing means to dynamically price the use of spectrum and provide the basis for transparency in pricing. In these liquid markets users can acquire the spectrum that best suits their needs and they will pay for it an economic price determined collectively by the market. We will discuss scenarios where spectrum trading will happen through brokers who continuously monitor the utilisation of different frequency bands and negotiate between those who need to buy or sell spectrum. The brokers may also have the role of a market maker and as such may be required to continuously quote the price of spectrum bands on the basis of their supply and demand situation. We will discuss scenarios where spectrum could become an asset class not only traded for hedging purposes but perhaps for speculation as well. Major investment funds may want to include spectrum in their investment portfolios for enhanced diversification and risk management.","PeriodicalId":409408,"journal":{"name":"2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124240144","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

Keynote Speaker 主讲人

2008 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom 2008) Pub Date : 1900-01-01 DOI: 10.1109/cisp.2010.5646833

Joseph B. Evans

引用次数: 0