Báo cáo hóa học: " Research Article Robust Blind Frequency and Transition Time Estimation for Frequency Hopping Systems" doc

... time behavior of PU and SU under two different access policies. 2. System Model and Problem Formulation In this section, we first present the system model and the time behaviors of PU and SU, and ... results are OFF) and transmits in both “OFF slots” and “ON slots”. The optimal allocation of sensing period and trans- mission time for two access policies are formulated a...

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 ... frequency hopping spread spectrum (FHSS) systems, two major problems are timing synchronization and frequency estimation. A blind estimation sche...

Ngày tải lên: 21/06/2014, 08:20

... catego- rization performance for selected five Caltech categories (car, motorbike, stop sign, cup, and faces). In this experiment, we use 15 randomly selected images (segmented) for training and test 15 randomly ... (pixels) Detection performance for occlusion (a) Performance for car occlusion Car side Car side Car side (b) Detection results Figure 28: Detection performance under o...

Ngày tải lên: 21/06/2014, 08:20

... each waveform in the 2D 8 × 8 DCT basic functions and also can be formulated as (8)foreach8 × 8 block in R, G1, G2, and B subimages, respectively. M and N represent the width and length for one ... 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 e...

Ngày tải lên: 21/06/2014, 07:20

... IEEE Standard for Local and Metropolitan Area Networks, Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems, Amendment 2: Physical and Medium Access Control Layers for ... Fixed and Mobile Operation in Licensed Bands and Corrigendum 1, IEEE Press, New York, NY, USA, 2005. [6] J. G. Andrews, A. Ghosh, and R. Muhamed, Fundamentals of WiMAX—Understandi...

Ngày tải lên: 21/06/2014, 11:20

... insight for designing H Add Threshold and H Delete Threshold for macrodiversity hand-off procedure defined in the IEEE 802.16e standard [18]. The IEEE 802.16e standard introduces a macro diversity hand-off ... a RRC as a function of γ 1 and γ 2 as given by (23 )and( 25 )for fractional frequency reuse and macro-diversity, respectively. As stated in Proposition 3,agreaterγ 2 is needed...

Ngày tải lên: 21/06/2014, 11:20

... geometry estimation methods,” Machine Vision and Applications, vol. 10, no. 1, pp. 17–26, 1997. [32] C. Tang and G. Medioni, Robust estimation of curvature information from noisy 3D data for shape ... called normal voting for robust curvature estimation, which is similar to [10, 32]. Recently,Tong and Tang [11] propose a three-pass tensor voting algorithm with improved robus...

Ngày tải lên: 21/06/2014, 08:20

... methods for digital watermarking and information embedding,” IEEE Transactions on Information Theory, vol. 47, no. 4, pp. 1423–1443, 2001. [16] Y. Xiao, L. M. Cheng, and L. L. Cheng, “A robust ... into 5 bands Discrete waveatom transform Inverse discrete waveatom transform Select suitable coefficients Compare and modify the coefficients according to Z u Collecting 4 sub- images and fo...

Ngày tải lên: 21/06/2014, 08:20

... Inequalities and Applications Volume 2011, Article ID 173430, 15 pages doi:10.1155/2011/173430 Research Article An Application of Hybrid Steepest Descent Methods for Equilibrium Problems and Strict Pseudocontractions ... x n i /λ n i → 0andu n i q, it follows from A4 that 0 ≥ φy, q,forall y ∈ C.Letz t  ty 1 − tq for all t ∈ 0, 1 and y ∈ C,thenwehavez t ∈ C and he...

Ngày tải lên: 21/06/2014, 05:20

... set. Execution time results are provided in Tables 5 and 6 for both Scheme1 and Scheme2 implementations. The results are specific for the AFP and the DP, showing absolute execution time and average ... Information Hiding and Multimedia Signal Processing (IIH-MSP ’06), pp. 533–536, usa, December 2006. [10] B. M. Sadler and A. Swami, “Analysis of multiscale products for ste...

Ngày tải lên: 21/06/2014, 05:20