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    • 21. 发明申请
    • CODE DIVISION MULIPLEXING METHOD, TRANSMITTING DEVICE AND RECEIVING DEVICE USING THE METHOD
    • 代码段复用方法,使用该方法的发送设备和接收设备
    • US20130039162A1
    • 2013-02-14
    • US13642336
    • 2011-03-22
    • Zhi ZhangMing XuMasayuki HoshinoDaichi Imamura
    • Zhi ZhangMing XuMasayuki HoshinoDaichi Imamura
    • H04J13/10
    • H04J13/0003H04J13/0055H04J13/0059H04J13/0062H04J13/0066H04J13/007H04J13/10H04J13/14
    • There are provided a code division multiplexing method as well as a transmitting device and a receiving device using the method. The method performs code division multiplexing of a plurality of signals by using a code matrix, the code matrix comprising a plurality of code words, the number of which is the same as the number of the plurality of signals, with each code word comprising a plurality of chips, the method comprising: multiplying each signal of the plurality of signals by each chip of a corresponding code word respectively; and calculating a sum of products of the respective chips in each code word and the corresponding signals to form a plurality of multiplexed signals, wherein, corresponding chips of the respective code words constitute multiple sets of chips, and only one term in differences or sums of any one set of chips and one set of chips among other sets of chips is not zero. The code division multiplexing method as well as the transmitting device and the receiving device according to the present disclosure can make the influence of the selectivity of channels when de-multiplexing is performed small, thus improving the channel transmission quality.
    • 提供码分复用方法以及使用该方法的发送装置和接收装置。 该方法通过使用码矩阵来执行多个信号的码分复用,码矩阵包括多个码字,其数量与多个信号的数量相同,每个码字包括多个 所述方法包括:分别将相应代码字的每个芯片分别乘以所述多个信号中的每个信号; 并计算每个码字中的各个码片的乘积和相应信号的乘积之和,以形成多个复用信号,其中相应码字的相应码片构成多组码片,并且只有一个项目的差值或 其他芯片组中的任何一组芯片和一组芯片不为零。 根据本公开的码分复用方法以及发送装置和接收装置可以在进行解复用时使通道的选择性受到影响,从而提高信道传输质量。
    • 24. 发明授权
    • Switching capacitor—PWM power converter
    • 开关电容 - PWM功率转换器
    • US08331110B2
    • 2012-12-11
    • US12638261
    • 2009-12-15
    • Ming XuKe JinFred C. Lee
    • Ming XuKe JinFred C. Lee
    • H02M3/335G05F3/04
    • H02M3/158H02M3/073H02M3/1584
    • A power converter topology operates as a switching capacitor (capacitive voltage divider) converter during a first, preferably short portion of a switching cycle to provide excellent dynamic transient response and as a pulse width modulated converter during a second portion of a switching cycle to provide flexibility of voltage regulation and generality of application. This topology can be made self-driven and is capable of zero voltage switching. Therefore the power converter can be used as one of a plurality of branches of a multi-phase converter to enhance transient response. The respective branches can also be independently optimized for particular load levels and can be operated independently in a phase shedding manner to improve efficiency at low load. Further, the power converter or respective branches of a multi-phase power converter are compatible with non-linear control to further improve dynamic response.
    • 电源转换器拓扑在切换周期的第一,最好是短的部分期间用作开关电容器(电容分压器)转换器,以在开关周期的第二部分期间提供优异的动态瞬态响应和作为脉宽调制的转换器,以提供灵活性 的电压调节和一般性的应用。 该拓扑结构可以是自驱动的,并且能够进行零电压切换。 因此,功率转换器可以用作多相转换器的多个分支之一,以增强瞬态响应。 相应的分支也可以针对特定的负载水平独立地进行优化,并且可以以相位切换方式独立地进行操作,以在低负载下提高效率。 此外,功率转换器或多相功率转换器的各个分支与非线性控制兼容以进一步改善动态响应。
    • 25. 发明申请
    • DC-TO-DC CONVERSION APPARATUS
    • 直流到直流转换装置
    • US20120268097A1
    • 2012-10-25
    • US13450434
    • 2012-04-18
    • Ju-Lu SunBo MaMing Xu
    • Ju-Lu SunBo MaMing Xu
    • G05F5/00H01F38/00
    • H02M3/1584
    • A direct current (DC)-to-DC conversion apparatus is provided. The provided DC-to-DC conversion apparatus is composed of two boost circuits, in which inputs of both boost circuits are connected in parallel, and outputs of both boost circuits are connected in series. Accordingly, when the provided DC-to-DC conversion apparatus is operated, the DC input power would be firstly sampled and determined, and then the operations of the first and the second switch devices disposed therein would be controlled in response to the sampled-determined result, such that both boost circuits would be respectively operated in different input conditions, for example, the input is normally-connected or the input is reverse-connected. Accordingly, regardless of the input of normal connection or the input of reverse connection, the provided DC-to-DC conversion apparatus can perform the function of DC-to-DC conversion, thereby enabling the applied product to be normally operated even the input is reverse-connected.
    • 提供直流(DC)到DC转换装置。 提供的DC-DC转换装置由两个升压电路组成,其中两个升压电路的输入并联连接,并且两个升压电路的输出串联连接。 因此,当所提供的DC-DC转换装置被操作时,将首先对DC输入功率进行采样和确定,然后响应于采样确定的控制来控制设置在其中的第一和第二开关装置的操作 结果,使得两个升压电路将分别在不同的输入条件下操作,例如,输入是正常连接的或者输入反向连接。 因此,不管正常连接的输入或反向连接的输入如何,所提供的DC-DC转换装置可以执行DC-DC转换的功能,从而使得应用产品即使是输入也是正常的 反向连接。
    • 28. 发明申请
    • WIRELESS COMMUNICATION SYSTEM AND DOWNLINK RECEIVING POWER DETECTION METHOD THEREFOR
    • 无线通信系统和下行链路接收功率检测方法
    • US20120113842A1
    • 2012-05-10
    • US13266292
    • 2010-04-09
    • Zhi ZhangMing XuMasayuki HoshinoDaichi Imamura
    • Zhi ZhangMing XuMasayuki HoshinoDaichi Imamura
    • H04W24/00
    • H04B7/0626H04L5/0051H04W52/343H04W72/0473
    • A wireless communication system and a method for detecting downlink receiving power in the system are disclosed. N cells in the system respectively transmit data to at least one receiving terminal via N resource blocks using the same time-frequency resources; multiple channel state information reference signals (CSI-RSs) of a corresponding cell are set in each resource block, and orthogonality is maintained among the CSI-RSs of all the cells, wherein N is an integer greater than 1. Said method includes: an additional demodulation reference signal (DM-RS) used for indicating a receiving power is set in a puncture position in the resource block of the first cell which corresponds to a CSI-RS set in a resource block of another cell; and the receiving power of said first cell is detected according to said additional DM-RS. By using said method, the receiving power of a single cell in N cells can be detected, and the system overhead is not increased.
    • 公开了一种用于检测系统中的下行链路接收功率的无线通信系统和方法。 系统中的N个小区通过使用相同的时间 - 频率资源的N个资源块分别向至少一个接收终端发送数据; 在每个资源块中设置相应小区的多信道状态信息参考信号(CSI-RS),并且在所有小区的CSI-RS之间维持正交性,其中N是大于1的整数。所述方法包括: 用于指示接收功率的附加解调参考信号(DM-RS)被设置在与另一个小区的资源块中的CSI-RS集相对应的第一小区的资源块中的删余位置; 并且根据所述附加DM-RS检测所述第一小区的接收功率。 通过使用该方法,可以检测N个小区中的单个小区的接收功率,并且不增加系统开销。
    • 30. 发明申请
    • ADAPTIVE ON-TIME CONTROL FOR POWER FACTOR CORRECTION STAGE LIGHT LOAD EFFICIENCY
    • 功率因数校正阶段光负载自适应接通时间控制
    • US20120014148A1
    • 2012-01-19
    • US13184788
    • 2011-07-18
    • Qian LiFred C. LeeMing XuChuanyun Wang
    • Qian LiFred C. LeeMing XuChuanyun Wang
    • H02M1/00
    • H02M1/4216H02M1/4225H02M1/44H02M2001/0032H02M2003/1586Y02B70/126Y02B70/16Y02P80/112
    • Light load efficiency of a power factor correction circuit is improved by adaptive on-time control and providing for selection between a continuous conduction mode and a discontinuous conduction mode wherein the discontinuous conduction mode increases time between switching pulses controlling connection of a cyclically varying voltage to a filter/inductor that delivers a desired DC voltage and thus can greatly reduce the switching frequency at light loads where switching frequency related losses dominate efficiency. The mode for controlling switching is preferably selected for each switching pulse within a half cycle of the cyclically varying input voltage. A multi-phase embodiment allows cancellation of EMI noise at harmonics of the switching frequency and adaptive change of phase angle allows for cancellation of dominant higher order harmonics as switching frequency is reduced.
    • 通过自适应导通时间控制来提高功率因数校正电路的轻负载效率,并提供连续导通模式和不连续导通模式之间的选择,其中不连续导通模式增加了控制周期性变化的电压连接到开关脉冲之间的时间 滤波器/电感器提供所需的直流电压,因此可以大大降低开关频率相关损耗占优势的轻负载时的开关频率。 优选地,在循环变化的输入电压的半周期内针对每个开关脉冲选择用于控制切换的模式。 多相实施例允许在开关频率的谐波处消除EMI噪声,并且由于开关频率降低,相位角的自适应变化允许抵消主要高阶谐波。