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This paper investigates the channel parameter estimation algorithm by using the Space-Alternating Generalized Expectation-Maximization (SAGE). Two strategies, i.e., parallel interference cancelation (PIC) and serial interference cancelation (SIC), are implemented and validated in the simulated SV channel model. Based on the massive MIMO channel measurement results in an indoor hall scenario in the...
A 60GHz wideband circularly polarized E-shaped patch antenna array is designed using surface micromachining. The E-shaped patch is fully utilized to obtain good circular polarization performance. The antenna array is excited by four-way power divider. The four-way power divider is designed using rectangular micro-coaxial transmission line. The antenna array with the specified size of 12.5mm×5.7mm×0...
Mind Evolutionary Algorithm (MEA) imitates the human mind evolution by using similartaxis and dissimilation operations,which overcomes the prematurity and improves searching efficiency. But the addition of naturally washed out temporary subpopulations is blind and random; the existing searching modes are easily to fall into local convergence.This paper proposed Differential Mind Evolutionary Algorithm...
Antenna array pattern synthesis is finding weights of amplitude and phase of every array elements to satisfy a set of specifications on the beam pattern. The global synthesis of antenna arrays that generate a desired radiation pattern is a highly nonlinear optimization problem. Chaotic mind evolution algorithm (CMEA) is a hybrid algorithm incorporating chaos with MEA, which reasonably combines the...
As for deep space exploration, the fundamental problem is the enormous path loss due to the vast distance. International Telecommunication Union (ITU) has allocated Xband and Ka-band for deep space exploration. However, it can be confirmed that, these frequency bands are not always the most efficient bands for the deep space exploration, especially in the deep space communications with the increasing...
Mind evolutionary algorithm (MEA) uses dasiasimilar taxispsila operation and dasiadissimilationpsila operation by imitating the human mind evolution to processes numerical optimization, overcoming the prematurity and improving searching efficiency. Given the determinate number and space between the antenna arrays units, the feeding-back amplitudes and phases are optimized and selected by this way...
The paper is split into two major parts: (1) the first is to look into the EM wave properties in metamaterials and to develop an efficient solvers for their designs; and (2) the second is to try to design the metamaterials for antenna applications. For the efficient algorithms developed, the integral equation solvers accelerated using the adaptive integral (equation) method (AIM) and also the pre-corrected...
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