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Unlike the traditional two-dimensional periodic arrays, a novel cubic frequency selective surface is proposed. For each unit, metal strips of a novel pattern are placed on dielectric substrates, and together form the six faces of a FSS cube, which is put in the middle of dielectric cubes. Simulation is conducted to analyze the characteristic of the FSS, and results are compared with traditional single-layer...
In this paper, a novel double-layer frequency selective surface (FSS) is proposed. Each layer consists of two semi-circle fractal elements put into a circular structure on a dielectric substrate. Simulation by CST MICROWAVE STUDIO® is conducted to testify the characteristics of the FSS. The results show that the novel structure has three resonant frequencies in the frequency band 0-30GHz with relatively...
Orthogonal space-time block codes are a class of STBC which can achieve full diversity gain but typically loss of code rate. Quasi-orthogonal space-time code (QOSTBC) can achieve full code rate. However, they loss part of diversity gain. Generalized ABBA (GABBA) STBC is a improve QOSTBC, which can achieve full diversity gain, and also can overcome the drawback that unable to transmit with full rate...
Antenna arrays are widely employed in communication systems, because the performance improvements over single antenna systems. The noise in multiple antennas may be statistically dependent from antenna to antenna and may be non-Gaussian. In this paper an efficient estimation of two-dimensional version Middleton's Class A noise model parameters is derived based on Markov Chain Monte Carlo (MCMC). This...
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