Báo cáo hóa học: " Performance analysis of spectrum sharing mechanisms in cognitive radio networks" pptx

... preemptive mechanism in joint leasing and sensing-based CRNs. Keywords: cognitive radio networks, joint leasing and sensing, non-preemptive mechanism, QoS tradeoff 1. Introduction Cognitive radio (CR) ... and Networking 2011, 2011:129 http://jwcn.eurasipjournals.com/content/2011/1/129 Page 3 of 15 RESEARCH Open Access Performance analysis of spectrum sharing mechanisms...

Ngày tải lên: 20/06/2014, 22:20

... and J M. Park, “Ensuring trustworthy spectrum sensing in cognitive radio networks,” in Proceedings of the 1st IEEE Workshop on Networking Technologies for Software Defined Radio Networks (SDR ’06), ... reproduction in any medium, provided the original work is properly cited. Cognitive radio is a promising technology aiming to improve the utilization of the radio electro...

Ngày tải lên: 21/06/2014, 11:20

... The implementation of coordinated transmissions in a distributed network is hence challenging due to the complexity of the joint beamforming a nd the extensive sharing of information between ... impacts of CFO in coordinated schemes are hence worse than for point-to-point communications. Because the frequency offset translates into the possibly destructive combination of the i...

Ngày tải lên: 20/06/2014, 22:20

... profiling make the development much faster than in other platforms. This is one of the pur- poses of the platform, to offer a high -performance device keeping prototyping rapid and closer to software. Using ... to oper ate on-line, immedi- ately after the stage of image capture and integrated into the system, and not for off-line processing, so we select devices that allow this kind...

Ngày tải lên: 20/06/2014, 22:20

... the set of measured channels intro- duced in Section 2. As mentioned in Section 1, it is in- appropriate to assess the performance of the OFDM system in terms of the SNIR, since maximizing it ... difference in the value of the impulse response from the beginning to the end of the symbol. The range of validity of this approximation will be assessed, a posteriori, in...

Ngày tải lên: 20/06/2014, 22:20

... Singapore. He is currently an Associate Professor in the Di- vision of Communication Engineering and has served as the Programme Director of the M.S. programe in communications engineering since ... the B.S. degree in elec- trical engineering from Huazhong Univer- sity of Science and Technology, Wuhan, China, in 2002. He is pursuing the Ph.D. degree in electrical engineering a...

Ngày tải lên: 22/06/2014, 23:20

... into intracell, intercell, and Pekka Pirinen 3 a a Desired link source node Desired link destination node Interfering node (a) Desired link source node Desired link destination node Interfering ... link source node Desired link destination node Interfering node (c) Desired link source node Desired link destination node Interfering node (d) Figure 1: Four different spatial topologies within ......

Ngày tải lên: 22/06/2014, 22:20

... the beginning, it creates four lists: L,contain- ing the links of LinkList yet to be assigned; C, containing the lists of available channels to each link of L (obtained from ChannelList); InterferentLi ... LinkList; while L ≠ ∅ do select a link according to the criteri a and store it in link; remove link from L; if no channel in C is available for link then insert link in Interfer...

Ngày tải lên: 21/06/2014, 02:20

... xuyou02@gmail.com 1 Department of Automation, Institute of Information Processing, Tsinghua University, Beijing 100084 China Full list of author information is available at the end of the article Xu et ... details 1 Department of Automation, Institute of Information Processing, Tsinghua University, Beijing 100084 China 2 Wireless and Mobile Communication Technology R&D Center,...

Ngày tải lên: 21/06/2014, 03:20

... to be considered independently of its ED action and might help in the understanding of the adverse effects caused in humans. Abbreviations AKT: RAC-alpha serine/threonine-protein kinase; AML: Acute ... FLIP: FLICE Inhibitor Protein; TRAIL: TNF Related Apoptosis Inducing Ligand; RA: Retinoic Acid; RB: Retinoblastoma. Competing interests The authors declare that they have no competing i...

Ngày tải lên: 18/06/2014, 15:20