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A High Spectral Efficiency System Enabled by Free Window with Full Duplex 被引量:1
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作者 Feng Cheng Cui Hongyu +1 位作者 Ma Meng Jiao Bingli 《China Communications》 SCIE CSCD 2015年第9期93-99,共7页
This paper studies the capacity issues of a wireless communication system that implements single channel full duplex(SCFD) communication at the base station(BS), thereby the mobile stations share the channel via time ... This paper studies the capacity issues of a wireless communication system that implements single channel full duplex(SCFD) communication at the base station(BS), thereby the mobile stations share the channel via time division duplex(TDD). The system makes use of the same setup as has been used in previous studies of SCFD, but unlike these previous systems, the new system uses water-filling to maximize the spectral efficiency of the uplink channel. The concept of a free window is introduced to the duplex model for measuring, intuitively, the effective bandwidth of the bi-directional communication. The capacity gain is calculated and numerical results show the advantage of the proposed system over that of conventional TDD. 展开更多
关键词 spectral efficiency free window time division duplex full duplex water-filling
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地震数据时频分析与分频处理 被引量:43
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作者 蔡希玲 吕英梅 《勘探地球物理进展》 2005年第4期265-270,共6页
在地震数据处理过程中,时频分析技术可较好地描述信号和噪声的频率随时间变化的规律,即时频分析可以细致地刻画数据中各类波的时频结构和性质,其重要性在于能直观地识别、检测和分类数据,因此,可采取有针对性的措施,以提高每一个步骤的... 在地震数据处理过程中,时频分析技术可较好地描述信号和噪声的频率随时间变化的规律,即时频分析可以细致地刻画数据中各类波的时频结构和性质,其重要性在于能直观地识别、检测和分类数据,因此,可采取有针对性的措施,以提高每一个步骤的处理精度。简述了时频分析的方法原理,介绍了适应于地震数据分析的窗函数的选取方法,并展示了分频噪声压制的应用效果,说明分频处理是提高数据处理保真度的有效方法。 展开更多
关键词 时频分析 时频谱图 窗函数 噪声检测 分频处理
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