Báo cáo hóa học: " Research Article Joint Sensing Period and Transmission Time Optimization for Energy-Constrained Cognitive Radios" doc

... pages doi:10.1155/2010/818964 Research Article Joint Sensing Period and Transmission Time Optimization for Energy-Constrained Cognitive Radios Yo u Xu , 1 Yin Sun, 2 Yunzhou Li, 2 Yifei Zhao, 2 andHongxingZou 1 1 Department ... slots that the sensing results are OFF) and transmits in both “OFF slots” and “ON slots”. The allocation of sensing period and tra...

Ngày tải lên: 21/06/2014, 11:20

... Processing Volume 2010, Article ID 172703, 13 pages doi:10.1155/2010/172703 Research Article Robust Blind Frequency and Transition Time Estimation for Frequency Hopping Systems Kuo-Ching Fu and Yung-Fang ... military communications for combating narrowband interference and for security purposes. The two parameters that are required for the estimation in FHSS are transiti...

Ngày tải lên: 21/06/2014, 08:20

... Article ID 657032, 11 pages doi:10.1155/2008/657032 Research Article Joint Video Summarization and Transmission Adaptation for Energy-Efficient Wireless Video Streaming Zhu Li, 1 Fan Zhai, 2 and ... 2001. [8]Y.Eisenberg,C.E.Luna,T.N.Pappas,R.Berry,andA. K. Katsaggelos, Joint source coding and transmission power management for energy-efficient wireless video communica- tion...

Ngày tải lên: 21/06/2014, 22:20

... Chapter 3.1]. that is, narrowband (flat fading) versus wideband (frequency- selective) models, time- varying versus time- invariant mod- els, and so forth. Narrowband MIMO channels are com- pletely ... suitable for the simulation of smart antennas and MIMO systems. They are, at this time, the most general standardized channel models, and are not intended for specific systems. The 3...

Ngày tải lên: 22/06/2014, 22:20

... n ) , (18) where n = 1, 2, η(L = 1) = 1/2, and T = 3/2forpackets D 2 , D 4 , D 5 ,andD 10 while η(L = 2) = 1andT = 2forpacket D 7 . The expected number of transmissions for an arbitrary packet is given ... Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010, Article ID 807691, 8 pages doi:10.1155/2010/807691 Research Article Joint NC-ARQ and AMC...

Ngày tải lên: 21/06/2014, 17:20

... signal cyclostationarity to the joint detection and classification of band-limited FSK and AM sig nals affected by additive Gaussian noise and phase, frequency, and time delay offsets. A first-order ... Processing Volume 2009, Article ID 656719, 12 pages doi:10.1155/2009/656719 Research Article Joint Signal Detection and Classification Based on First-Order Cyclostationarity...

Ngày tải lên: 21/06/2014, 19:20

... Wireless Communications and Networking Volume 2009, Article ID 564692, 15 pages doi:10.1155/2009/564692 Research Article Joint Throughput Maximization and Fair Uplink Transmission Scheduling ... algorithm on its operation and achievable performance and allow us to obtain a better understanding of its operational characteristics and properties. Then in Sections 4.2.3 and...

Ngày tải lên: 21/06/2014, 22:20

... block coding. Our research only focuses on developing the proposed image compressor, and other components are implemented by another research department for the GICam-II capsule endocopy. Therefore, the format ... domain for each of the components, R, G1,G2,andB.The2D8 × 8 DCT transformation can be perceived as the process of finding for each waveform in the 2D 8 × 8 DCT basic func...

Ngày tải lên: 21/06/2014, 07:20

... cε p for all ε ∈ 0, 2. For example, see 10, 11  for more detials. Observe that every p-uniformly convex space is uniformly convex. One should note that no Banach space is p- uniformly convex for ... A∩T −1 0 /  ∅ and Ay≤Ay−Au for all y ∈ C and u ∈ F.Let{α n }⊂0, 1, {r n }⊂0, ∞ such that lim sup n →∞ α n < 1 and lim inf n →∞ r n > 0, and let {λ n }⊂a, b...

Ngày tải lên: 21/06/2014, 20:20

... transcription, becausewehavetorecognizethespeechdocumentat least twice, download thousands of Web documents, and train a language model. Therefore, this kind of method is not suitable for real -time speech transcription, but can be used for ... result. The estimated values of Q th were 0.09 for document ID 8, 0.14 for ID 9 and 0.12 for all of the other documents. In the test do...

Ngày tải lên: 21/06/2014, 20:20