约束导向法(Constraints-led Approach,CLA)主要由运动控制的动力系统理论以及生态心理学构成。国外关于非线性教学法CLA的相关研究数量日益增多,但缺乏系统的文献梳理,对研究领域发展历程和研究热点演变的认识不足。本文基于Web of Sci...约束导向法(Constraints-led Approach,CLA)主要由运动控制的动力系统理论以及生态心理学构成。国外关于非线性教学法CLA的相关研究数量日益增多,但缺乏系统的文献梳理,对研究领域发展历程和研究热点演变的认识不足。本文基于Web of Science和中国知网数据库,提取近20年国外非线性教学法CLA的研究文献,运用文献计量学软件CiteSpace知识图谱可视化方法,对其进行文献被引量、发文作者和关键词共现分析。结果显示:非线性教学法在国外研究起步早且发展迅速,现已成为热门研究主题;总体上作者交叉合作较多,核心作者间存在紧密合作网;国外已将CLA运用在教学实践中,研究热点主要为任务约束与实践的结合、非线性教学法与教学的关系、非线性教学法中运动技能习得等;CLA理论在实践中的应用是该领域持续关注的内容;体育指导者应加强对CLA的学习。展开更多
Based on the fact that the variation of tile direction of arrival (DOA) isslower than that of the channel fading, the steering vector of the desired signal is estimatedfirstly using a subspace decomposition method and...Based on the fact that the variation of tile direction of arrival (DOA) isslower than that of the channel fading, the steering vector of the desired signal is estimatedfirstly using a subspace decomposition method and then a constrained condition is configured.Traffic signals are further employed to estimate the channel vector based on the constrained leastsquares criterion. We use the iterative least squares with projection (ILSP) algorithm initializedby the pilot to get the estimation. The accuracy of channel estimation and symbol detection can beprogressively increased through the iteration procedure of the ILSP algorithm. Simulation resultsdemonstrate that the proposed algorithm improves the system performance effectively compared withthe conventional 2-D RAKE receiver.展开更多
文摘约束导向法(Constraints-led Approach,CLA)主要由运动控制的动力系统理论以及生态心理学构成。国外关于非线性教学法CLA的相关研究数量日益增多,但缺乏系统的文献梳理,对研究领域发展历程和研究热点演变的认识不足。本文基于Web of Science和中国知网数据库,提取近20年国外非线性教学法CLA的研究文献,运用文献计量学软件CiteSpace知识图谱可视化方法,对其进行文献被引量、发文作者和关键词共现分析。结果显示:非线性教学法在国外研究起步早且发展迅速,现已成为热门研究主题;总体上作者交叉合作较多,核心作者间存在紧密合作网;国外已将CLA运用在教学实践中,研究热点主要为任务约束与实践的结合、非线性教学法与教学的关系、非线性教学法中运动技能习得等;CLA理论在实践中的应用是该领域持续关注的内容;体育指导者应加强对CLA的学习。
基金The National Hi-Tech Development Plan (863-317-03-01-02-04-20).
文摘Based on the fact that the variation of tile direction of arrival (DOA) isslower than that of the channel fading, the steering vector of the desired signal is estimatedfirstly using a subspace decomposition method and then a constrained condition is configured.Traffic signals are further employed to estimate the channel vector based on the constrained leastsquares criterion. We use the iterative least squares with projection (ILSP) algorithm initializedby the pilot to get the estimation. The accuracy of channel estimation and symbol detection can beprogressively increased through the iteration procedure of the ILSP algorithm. Simulation resultsdemonstrate that the proposed algorithm improves the system performance effectively compared withthe conventional 2-D RAKE receiver.
