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39 条记录 (耗时 0.019 秒)

    Pulse-Sync Demodulator
    4.
    发明申请
    Pulse-Sync Demodulator 有权
    脉冲同步解调器

    公开(公告)号：US20100246660A1

    公开(公告)日：2010-09-30

    申请号：US12374737

    申请日：2007-07-27

    申请人： Michiaki Matsuo ,  Hideki Aoyagi ,  Hitoshi Asano ,  Kazuya Toki

    发明人： Michiaki Matsuo ,  Hideki Aoyagi ,  Hitoshi Asano ,  Kazuya Toki

    IPC分类号： H03K9/04

    CPC分类号： H04L7/033 ,  H03L7/0807 ,  H03L7/0812 ,  H04B1/717 ,  H04B1/7183 ,  H04L7/0037

    摘要： A received pulse signal based on an on-off keying modulation scheme is alternately sampled by AD conversion sections operated by a clock signal whose frequency is one-half of a transmission rate. In the synchronization, amounts of delay in sampling timing adjustment sections are made different from each other, whereby phases of two different points in a symbol pulse are sampled. An amount of delay in a variable delay section is adjusted in accordance with a result of comparison of the sampled values, thereby achieving synchronization. At the time of demodulation, the amount of delay in the variable delay section is held, and the amounts of delay in the sampling timing adjustment sections are switched to the same value, and the symbol pulse is alternately sampled. The sampled values are subjected to threshold value determination, and the determination result is subjected to parallel-to-serial conversion, whereby a demodulation output is acquired.

    摘要翻译： 基于开关键控调制方式的接收脉冲信号由频率为传输速率的二分之一的时钟信号操作的AD转换部分交替采样。 在同步中，采样定时调整部分中的延迟量彼此不同，从而对符号脉冲中两个不同点的相位进行采样。 根据采样值的比较结果调整可变延迟部分的延迟量，从而实现同步。 在解调时，保持可变延迟部分中的延迟量，并将采样定时调整部分中的延迟量切换到相同的值，并且对符号脉冲进行交替采样。 对采样值进行阈值判定，对判定结果进行并行到串行转换，从而得到解调输出。

    System and method for wave damping
    5.
    发明申请
    System and method for wave damping 有权
    波阻尼系统和方法

    公开(公告)号：US20070291892A1

    公开(公告)日：2007-12-20

    申请号：US11807036

    申请日：2007-05-25

    申请人： Joseph Bobier ,  Nadeem Khan

    发明人： Joseph Bobier ,  Nadeem Khan

    IPC分类号： H04L23/00

    CPC分类号： H03J1/00 ,  H03H9/6489 ,  H04B1/0458 ,  H04B1/717 ,  H04B1/7172 ,  H04B1/719

    摘要： A system and method of damping the ringing response of Band Pass Filters for use in impulse and single cycle modulation systems which are capable of carrying a high data rate and which are severely affected by the ringing response of the Band Pass Filter.

    摘要翻译： 一种阻尼带通滤波器的振铃响应的系统和方法，用于脉冲和单周期调制系统，能够承载高数据速率，并受到带通滤波器振铃响应的严重影响。

    Method and apparatus for specifying pulse characteristics using a code that satisfies predefined criteria
    6.
    发明授权
    Method and apparatus for specifying pulse characteristics using a code that satisfies predefined criteria 有权
    使用满足预定准则的代码指定脉冲特性的方法和装置

    公开(公告)号：US06636566B1

    公开(公告)日：2003-10-21

    申请号：US09592288

    申请日：2000-06-12

    申请人： Mark D. Roberts ,  Marcus H. Pendergrass ,  Larry W. Fullerton ,  James L. Richards

    发明人： Mark D. Roberts ,  Marcus H. Pendergrass ,  Larry W. Fullerton ,  James L. Richards

    IPC分类号： H04B1406

    CPC分类号： H04B1/717 ,  H04B1/71632 ,  H04B1/7176 ,  H04B2201/71638

    摘要： A coding method for a pulse transmission system specifies temporal and/or non-temporal pulse characteristics according to temporal and/or non-temporal characteristic value layouts having one or more allowable and non-allowable regions. The method generates codes having predefined properties. The method generates a pulse train by mapping codes to the characteristic value layouts, where the codes satisfy predefined criteria. In addition, the predefined criteria can limit the number of pulse characteristic values within a non-allowable region. The predefined criteria can be based on relative pulse characteristic values. The predefined criteria can also pertain to spectral properties and to correlation properties. The predefined criteria may pertain to code length and to the number of members of a code family. The pulse train characteristics may pertain to a subset of the pulse train.

    摘要翻译： 用于脉冲传输系统的编码方法根据具有一个或多个允许和不允许区域的时间和/或非时间特征值布局来指定时间和/或非时间脉冲特性。 该方法生成具有预定属性的代码。 该方法通过将代码映射到特征值布局来生成脉冲序列，其中代码满足预定标准。 此外，预定义的标准可以限制不允许区域内的脉冲特征值的数量。 预定义的标准可以基于相对脉冲特征值。 预定义的标准也可以涉及光谱性质和相关性质。 预定义的标准可以涉及代码长度和代码族的成员数量。 脉冲串特性可能与脉冲序列的子集有关。

    PULSE POSITION MODULATION SCHEME IMPULSE RADIO TRANSMITTER AND RADIO COMMUNICATION SYSTEM
    10.
    发明申请
    PULSE POSITION MODULATION SCHEME IMPULSE RADIO TRANSMITTER AND RADIO COMMUNICATION SYSTEM 有权
    脉冲位置调制方案冲突无线电发射机和无线电通信系统

    公开(公告)号：US20160211884A1

    公开(公告)日：2016-07-21

    申请号：US15081907

    申请日：2016-03-27

    申请人： FUJITSU LIMITED

    发明人： YASUHIRO NAKASHA

    IPC分类号： H04B1/7163 ,  H04B1/717

    CPC分类号： H04B1/71635 ,  H04B1/717 ,  H04B1/7176

    摘要： A pulse position modulation scheme impulse radio transmitter includes: a bipolar return-to-zero type short-pulse generator; a bandpass filter that has a predetermined pass frequency band and which allows an output of the bipolar return-to-zero type short-pulse generator to pass; a transmission amplifier that amplifies an output of the bandpass filter; and a transmission antenna, wherein the bipolar return-to-zero type short-pulse generator includes: a trigger flip-flop with a position modulation function that outputs a pulse-width-variable pulse in each period of a clock signal, the pulse-width-variable pulse being inverted in each period of the clock signal and the pulse width of the pulse-width-variable pulse differing in accordance with transmission data; and a pulse generation filter that generates a positive pulse or a negative pulse in accordance with a direction in which a varying edge of the pulse-width-variable pulse changes.

    摘要翻译： 脉冲位置调制方案脉冲无线电发射机包括：双极返回零型短脉冲发生器; 带通滤波器，其具有预定的通过频带，并且允许双极返回零型短脉冲发生器的输出通过; 放大带通滤波器的输出的发送放大器; 以及发送天线，其中所述双极性返回零型短脉冲发生器包括：具有在时钟信号的每个周期中输出脉冲宽度可变脉冲的位置调制功能的触发触发器， 宽度可变脉冲在时钟信号的每个周期中反相，并且脉冲宽度可变脉冲的脉冲宽度根据传输数据而不同; 以及根据脉冲宽度可变脉冲的变化边缘改变的方向产生正脉冲或负脉冲的脉冲产生滤波器。