2014 1st International Workshop on Cognitive Cellular Systems (CCS)最新文献_第3页

On the design of MIMO antennas for cognitive radio systems 认知无线电系统中MIMO天线的设计

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933787

M. Bouezzeddine, W. Schroeder, T. Kaiser

引用次数: 2

GA based multi-objective LTE scheduler 基于遗传算法的LTE多目标调度

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933802

O. F. Gemici, Ibrahim Hökelek, H. A. Çırpan

引用次数: 8

System design of a high-IF to UHF converter enabling cognitive radio 实现认知无线电的高中频到超高频转换器的系统设计

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933784

I. Subbiah, A. Ashok, G. Varga, M. Schrey, S. Heinen

{"title":"System design of a high-IF to UHF converter enabling cognitive radio","authors":"I. Subbiah, A. Ashok, G. Varga, M. Schrey, S. Heinen","doi":"10.1109/CCS.2014.6933784","DOIUrl":"https://doi.org/10.1109/CCS.2014.6933784","url":null,"abstract":"It is known that cognitive radio (CR) is an attractive concept to overcome the prevailing spectrum scarcity and inefficient spectrum usage. Also, with their intermittent spectral vacancies, TV white spaces offer a faster deployment potential considered with respect to cognitive radios. In this paper, system design of a high intermediate frequency (IF) to UHF frequency converter for cognitive radios have been discussed and the performance of such a converter analyzed as a proof of concept. For the design of RF front-ends, CR brings forth huge architectural challenges such as in-band local oscillator harmonics, ultra low sensitivity and high linearity. As shown in this paper, a high-IF radio front-end can successfully tackle some of these challenges. Additionally, such a high-IF converter enables white space operation for existing commercial devices by acting as frequency converters. From detailed measurements, the capabilities in both physical layer and application layer performance of a high-IF front-end developed out of off-the-shelf components is explained and is shown to provide negligible degradation to the commercial device being connected to.","PeriodicalId":288065,"journal":{"name":"2014 1st International Workshop on Cognitive Cellular Systems (CCS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122588106","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

Low complexity spectrum sensing using variable digital filters for cognitive radio based air-ground communication 基于认知无线电地空通信的可变数字滤波器低复杂度频谱传感

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933791

Abhishek Ambede, K. G. Smitha, A. P. Vinod

{"title":"Low complexity spectrum sensing using variable digital filters for cognitive radio based air-ground communication","authors":"Abhishek Ambede, K. G. Smitha, A. P. Vinod","doi":"10.1109/CCS.2014.6933791","DOIUrl":"https://doi.org/10.1109/CCS.2014.6933791","url":null,"abstract":"Cognitive radios (CRs) enable efficient usage of the radio frequency spectrum by sensing their operating environments and adapting their transceiver characteristics accordingly. This ability of CRs makes them a feasible choice to achieve green radio networks. CRs perform spectrum sensing, wherein presence and/or absence of licensed users' signals is detected in the wideband input frequency range in order to allow opportunistic access of the vacant frequency bands to unlicensed users. Variable digital filters (VDFs) which can provide frequency responses with variable cutoff frequencies are widely used for spectrum sensing in CRs. In this paper, we propose an energy detector based spectrum sensing scheme which employs such VDFs based on first order all pass transformation and the modified coefficient decimation method. With the help of design example of an air-ground communication scenario, we show that VDFs employed in the proposed scheme are low complexity alternatives to the other relevant VDFs in literature. The proposed spectrum sensing scheme can be useful not only for solving the anticipated spectrum scarcity caused by the existing static spectrum allocation scheme in current air-ground communication systems, but also in achieving energy efficient green communications.","PeriodicalId":288065,"journal":{"name":"2014 1st International Workshop on Cognitive Cellular Systems (CCS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126303473","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

Licensed shared access — State-of-the-art and current challenges 授权共享访问-最先进的和当前的挑战

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933808

M. Mueck, V. Frascolla, B. Badic

{"title":"Licensed shared access — State-of-the-art and current challenges","authors":"M. Mueck, V. Frascolla, B. Badic","doi":"10.1109/CCS.2014.6933808","DOIUrl":"https://doi.org/10.1109/CCS.2014.6933808","url":null,"abstract":"In the context of a wireless communication infrastructure, the Licensed Shared Access (LSA) concept is currently being developed by CEPT regulation and ETSI standardization bodies, with the aim of enabling cellular operators to have access to further spectral resources on a licensed shared basis. Even though spectrum owners, also known as Incumbents, will cooperate with cellular operators in the framework of a Sharing Agreement that is typically set-up for a long-term basis, the LSA concept will in addition, under specific conditions, give Incumbents the opportunity to reclaim spectrum on a per-need basis. Obviously, this new concept for managing spectrum introduces a number of novel challenges, such as vacate in a coordinated manner the LSA bands in case of a corresponding request being triggered by Incumbents, coordinate the LSA spectrum when it is used in proximity to neighbouring countries and/or regulation domains, establish protection zones in which maximum interference levels are guaranteed to Incumbents, etc. This paper gives an overview on the LSA state-of-the-art and elaborates the key challenges to be addressed in the future design of LSA systems.","PeriodicalId":288065,"journal":{"name":"2014 1st International Workshop on Cognitive Cellular Systems (CCS)","volume":"115 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128998811","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: 27

Analysis of energy harvesting for green cognitive radio networks 绿色认知无线网络能量收集分析

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933793

A. Ercan, M. O. Sunay, S. Pollin

引用次数: 7

Performance analysis of random neural networks in LTE-UL of a cognitive radio system 随机神经网络在认知无线电系统LTE-UL中的性能分析

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933800

Ahsan Adeel, H. Larijani, A. Ahmadinia

引用次数: 7

Joint resource allocation in multicarrier based cognitive networks with two-way relaying 双向中继多载波认知网络中的联合资源分配

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933797

Ahmed Jendeya, M. Shaat, A. Abu-Hudrouss, F. Bader

引用次数: 2

RF frequency converters for White Space devices 用于空白空间设备的射频频率转换器

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933785

M. Schrey, G. Varga, A. Ashok, I. Subbiah, S. Heinen

{"title":"RF frequency converters for White Space devices","authors":"M. Schrey, G. Varga, A. Ashok, I. Subbiah, S. Heinen","doi":"10.1109/CCS.2014.6933785","DOIUrl":"https://doi.org/10.1109/CCS.2014.6933785","url":null,"abstract":"The spectrum scarcity caused by the exploding wireless data demand is seen to be combatable with the help of cognitive radio techniques. However, not only in the fields of algorithms and digital signal processing, research has to be done. To derive accurate channel models, to conduct field tests and to find realistic spectrum sensing scenarios, testing with air interfaces is inevitable for conducting cognitive radio research. As conventional software defined radios either do not possess the required wide frequency range, the required linearity or the out-of-band rejection to fulfill the specifications, alternative possibilities for air interfaces have to looked into. In this paper, two frequency converters for operation of commercial radio transceivers in the TV White Space are presented. While “whiteLAN” enables the use of standard wireless LAN equipment in the TV white space, “kogHF” enables cellular LTE devices to operate in the TV white space. Both converters are described and their performance is evaluated. The combination of the realized frequency converter and any software-defined radio or any standard transceiver then fulfills the corresponding specifications and spectrum masks while operating in the TV White Space.","PeriodicalId":288065,"journal":{"name":"2014 1st International Workshop on Cognitive Cellular Systems (CCS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134263703","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

Computationally efficient modulation detector with near optimal performance 具有接近最优性能的计算效率调制检测器

2014 1st International Workshop on Cognitive Cellular Systems (CCS) Pub Date : 2014-10-23 DOI: 10.1109/CCS.2014.6933799

Yun Chen, Christopher Husmann, A. Czylwik

引用次数: 1