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Pilot-symbol-aided channel estimation (PSACE) method is mostly employed to acquire channel state information in wireless communication systems. By exploiting the coherent sparsity of the fading channels, compressive sensing (CS) based channel estimation method can greatly decrease the pilot overhead burden. In this paper, we propose CS-based channel estimation method for MIMO-OFDM systems over frequency-selective...
A new load flow method for large shipboard power system with multiple generators which combined Gauss-Seidel method and forward-backward method is presented. In the proposed method, an shipboard power system is divided into a main power supply network and several radial distribution networks, which are deal with respectively. The forward-backward sweep method is used to solve the power flow for each...
We present a new surface simplification algorithm. The algorithm is based on iterative edge contracting, and exploits a new method to measure the cost of collapse which takes the length of contracting edge and the rotation of the normal vector to the related triangle into account. In addition, the proposed algorithm adopts the multiple-choice approach to find the simplification sequence, which leads...
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