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Heterogeneity and stability of the agricultural landscape is the premise to maintain the stability and high-efficient of agricultural ecosystem. Disturbance regimes have been recognized as the causes of the landscape heterogeneity. In this paper, the Fengqiu County, a typical agricultural region in the lower reaches of the Yellow River plains, was selected as the study area. Based on the TM imagery...
In this paper, link-adaptation schemes, where the transmit parameters are dynamically adapted to the changing channel conditions, are developed for spatial modulation (SM) transmission systems. The proposed schemes are based on the adaptive modulation (AM) and transmit-mode switching (TMS) techniques, to further exploit the spatial freedom of the multiple-input–multiple-output channel. More specifically,...
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