... large virtual MIMO broadcast channel (BC) model with one base station and more antennas [12–14]. This approach increases the number of transmit antennas to each user, and hence the capacity increases ... cellular network layoutisshowninFigure3. A base station is located at the center of each hexagonal cell. Each base station is equipped with n t transmit antennas. There are n r receive ante...
Ngày tải lên: 21/06/2014, 05:20
... that the phase θ 0 can be also estimated by a brute force search on function J h . Simulated Annealing Algorithm. In its original form, the Simulated Annealing algorithm is based on the analogy between ... proposed method was compared is a classical phase offset estimation algorithm that was presented in [25] for MPSK modulations and in [26] for other types of modulations. This a...
Ngày tải lên: 21/06/2014, 08:20
Báo cáo hóa học: "Research Article Model Compensation Approach Based on Nonuniform Spectral Compression Features for Noisy Speech Recognition" docx
... that all MC methods can achieve good performance for the three additive noises at low SNR. For the sake of comparison, we define an average performance gain G ave of a MC method as the average ... compression value. The compres- sion function produces small α k at a steep rate of change for small band SNR above the cutoff and large α k asymptotically close to one at a gradual rate...
Ngày tải lên: 22/06/2014, 23:20
Báo cáo hóa học: " Research Article The Existence of Positive Solution to a Nonlinear Fractional Differential Equation with Integral Boundary Conditions" potx
... Systems, Cambridge Academic, Cambridge, UK, 2009. 7 V. Lakshmikantham and A. S. Vatsala, “Basic theory of fractional differential equations,” Nonlinear Analysis. Theory, Methods & Applications, ... 56–64, 2005. 9 V. Daftardar-Gejji and S. Bhalekar, “Boundary value problems for multi-term fractional differential equations,” Journal of Mathematical Analysis and Applications, vol. 345,...
Ngày tải lên: 21/06/2014, 05:20
Báo cáo hóa học: " Research Article Estimation of Radar Cross Section of a Target under Track" potx
... average RCS, and a numerical solution to the approach is proposed based on a generalized expectation maximization (GEM) algorithm. Estimation accuracy of the approach is compared to that of a ... Conclusion An ML approach has been presented for estimating the average RCS, and a numerical solution to the approach has been proposed based on a generalized expectation maxi- mization...
Ngày tải lên: 21/06/2014, 08:20
báo cáo hóa học:" Research Article Note on the Persistent Property of a Discrete Lotka-Volterra Competitive System with Delays and Feedback Controls" pptx
... coefficients are given to guarantee that all the species are permanent. It is shown that these conditions are weaker than those of Liao et al. 2008. 1. Introduction Traditional Lotka-Volterra competitive ... exponentially for 2 ≤ i ≤ N, and u i t → X ∗ , where X ∗ is a certain solution of a logistic equation. Teng 8 and Ahmad and Stamova 9 also studied the coexistence on a nonauto...
Ngày tải lên: 21/06/2014, 11:20
Báo cáo hóa học: "Research Article Experimental Investigation of Cooperative Schemes on a Real-Time DSP-Based " docx
... we can calculate the BER also based on this data. When we calculate the duty cycle we assume that these symbols were actually carrying payload data. The results should be the same as in a case ... communication terminals. In cooperative communication, a number of relay nodes are assigned to help a source in forwarding its information to its destination, hence forming a virtual antenna...
Ngày tải lên: 21/06/2014, 20:20
Báo cáo hóa học: "Research Article Stability and Convergence Results Based on Fixed Point Theory for a Generalized Viscosity Iterative Scheme" pot
... Mathematical Analysis and Applications, vol. 298, no. 1, pp. 279–291, 2004. 15 A. Moudafi, “Viscosity approximation methods for fixed-points problems,” Journal of Mathematical Analysis and Applications, ... Applications, vol. 2008, Article ID 480187, 20 pages, 2008. 13 A. T. M. Lau, H. Miyake, and W. Takahashi, “Approximation of fixed points for amenable semigroups of nonexpansive m...
Ngày tải lên: 21/06/2014, 20:20
Báo cáo hóa học: " Research Article Tracking Intermittently Speaking Multiple Speakers Using a Particle Filter" doc
... the state transition probability, an estimate of an inactive speaker location can be retained, which is an advantage in updating the speaker location once the speaker becomes active again. A block ... Philadelphia, Pa, USA, March 2005. [8] A. Quinlan, J P. Barbot, P. Larzabal, and M. Haardt, “Model order selection for short data: an exponential fitting test (EFT),” EURASIP Journal on Adva...
Ngày tải lên: 21/06/2014, 20:20
báo cáo hóa học:" Research Article Evaluation and Design Space Exploration of a Time-Division Multiplexed NoC on FPGA for Image Analysis Applications" docx
... designed for most of image analysis applications. Characteristics from such applications are used to propose a parameterized and adaptable architecture for FPGA. 2.1. Characteristics of Image Analysis ... is a parameterized architecture dedicated to image analysis applications on FPGA. All flows and data are analyzed to propose two generic NoC archi- tectures, a ring for results...
Ngày tải lên: 21/06/2014, 20:20