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This paper addresses collective rotating motions of second-order multi-agent systems in threedimensional space (3D). Two distributed control protocols are proposed and sufficient conditions are derived under which all agents rotate around a common point with a specified formation structure. Simulation results are provided to illustrate the effectiveness of(More)
A novel dual-mode blind equalization algorithm for high-order Quadrature Amplitude Modulation (QAM) is presented. The proposed algorithm consists of the generalized mult-mudulus algorithm (GMMA) for initial convergence during blind startup, and the decision–directed least mean square algorithm (DDLMS) which is used to enhance the performance. The(More)
A new modulated hopping Discrete Fourier Transform (mHDFT) algorithm which is characterized by its merits of high accuracy and constant stability is presented. The proposed algorithm, which is based on the circular frequency shift property of DFT, directly moves the k-th DFT bin to the position of k = 0, and computes the DFT by incorporating the successive(More)
This paper first reviews the application of computing technology in electric power system, with emphasis on the evolution of the software architecture. And then proposes a software architecture to implement power system operation and computing. As power systems have become more complicated, software tools and simulations have played a more important role.(More)
Based on enhanced interpolation DFT, a novel parameter estimation algorithm for the exponential signal is presented. The proposed two-step solution consists of a preprocessing unit which constructs a new signal sequence by continuously cycle shifting sample points and summing up N buffered exponential signal sample sequences, then an interpolation DFT(More)