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    • 61. 发明授权
    • Filter for multicarrier communication system and method for peak power
control therein
    • 多载波通信系统滤波器及其峰值功率控制方法
    • US6128351A
    • 2000-10-03
    • US973883
    • 1998-06-21
    • Alan JonesPaul Golding
    • Alan JonesPaul Golding
    • H04L27/00H04J11/00H04L27/26H04L27/10H04B15/00H04K1/02
    • H04L27/2615H04L27/2628H04L27/2602
    • A communication device (60) for simultaneously transmitting independent information (82) on multiple channels comprises a modulator (66) and at least two matched filters (68-70). Each matched filter has a unique predetermined characteristic that is a time-reversed, complex conjugate of a complex waveform shape (72) produced by the modulator (66) in response to a channel encoder previously supplying known codeword vectors (75) to the modulator (66). Therefore, a composite signal envelope (82) produced for transmission by the communication device (60) of FIG. 4 has a reduced peak-to-mean envelope power ratio (PMEPR), since relatively large excursions in complex waveform shapes subsequently generated by the modulator (66) are unmatched by the unique filter characteristics while relatively small excursion are matched and therefore enhanced.
    • PCT No.PCT / EP97 / 02486 Sec。 371日期:1998年6月4日 102(e)日期1998年6月4日PCT提交1997年5月15日PCT公布。 公开号WO97 / 45987 日期1997年12月4日用于在多个信道上同时发送独立信息(82)的通信设备(60)包括调制器(66)和至少两个匹配滤波器(68-70)。 每个匹配滤波器具有独特的预定特性,其是响应于先前向调制器提供已知码字矢量(75)的信道编码器,由调制器(66)产生的复数波形形状(72)的时间反转的复共轭, 66)。 因此,生成用于由图1的通信设备(60)发送的复合信号包络(82)。 由于由调制器(66)随后产生的复杂波形形状的相对大的偏移不同于独特的滤波器特性,而相对较小的偏移匹配并因此增强,因此图4具有降低的峰值平均包络功率比(PMEPR)。
    • 69. 发明授权
    • Leaf skimming apparatus
    • 撇皮机
    • US09080343B2
    • 2015-07-14
    • US13790370
    • 2013-03-08
    • J. Alan Jones
    • J. Alan Jones
    • E04H4/16
    • E04H4/1609
    • A leaf skimming apparatus includes an elongate pole having first and second ends and defining a tubular configuration. A handle is positioned adjacent the pole first end. A scoop assembly is coupled to the housing second end, the scoop assembly having lower and upper scoop portions pivotally movable between open and closed configurations. A manually operable trigger is attached to the housing adjacent to the handle, the trigger being operatively connected to the scoop assembly and configured to selectively move the lower and upper scoop portions between the open and closed configurations. A linkage is situated in the housing that is operatively connected to the trigger and to the scoop assembly and configured to move the lower and upper scoop portions between the open and closed configurations upon respective operations of the trigger.
    • 叶片撇取装置包括具有第一和第二端并限定管状构造的细长杆。 手柄定位在杆第一端附近。 铲斗组件联接到壳体的第二端,铲斗组件具有可在打开和关闭构型之间枢转运动的下勺部分和上勺部分。 手动操作的触发器附接到邻近手柄的壳体,触发器可操作地连接到铲斗组件并且构造成在打开和关闭构造之间选择性地移动下勺部分和上勺部分。 联动装置位于壳体中,其可操作地连接到触发器和铲斗组件并且构造成在触发器的相应操作时在打开和关闭构造之间移动下勺部分和上勺部分。