公开(公告)号：US09479280B2

公开(公告)日：2016-10-25

申请号：US13543259

申请日：2012-07-06

申请人： Jun Zheng ,  Stefan J. Murry

发明人： Jun Zheng ,  Stefan J. Murry

IPC分类号： H04J14/02 ,  H04B10/50 ,  H04B10/572 ,  H01S5/14

CPC分类号： H01S5/146 ,  H01S5/125 ,  H04B10/25 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： An extended cavity Fabry-Perot laser assembly provides relatively narrow mode spacing while allowing relatively high speed optical modulation. The extended cavity Fabry-Perot laser assembly generally includes an exit reflector physically separated from a laser emitter (e.g., a gain chip) to extend the lasing cavity and narrow the mode spacing while maintaining a relatively small gain region in the laser emitter capable of higher speed optical modulation. The extended cavity Fabry-Perot laser assembly may be used in a multi-channel transmitter in a wavelength division multiplexed (WDM) optical system that selects a channel wavelength for the transmitter from among multiple channel wavelengths emitted by the laser assembly. The narrow mode spacing may be less than a WDM channel width, and more specifically, may be less than a channel passband of an arrayed waveguide grating (AWG) or other filter used to select the channel wavelength.

摘要翻译： 扩展腔法布里 - 珀罗激光器组件提供相对窄的模式间隔，同时允许相对高速的光学调制。 扩展腔法布里 - 珀罗激光器组件通常包括与激光发射器（例如，增益芯片）物理分离的出射反射器，以延伸激光腔并且缩小模式间隔，同时保持激光发射器中能够较高的相对小的增益区域 速度光调制。 扩展腔法布里 - 珀罗激光器组件可以用在波分复用（WDM）光学系统中的多通道发射机中，该系统从由激光组件发射的多个信道波长中选择用于发射机的信道波长。 窄模式间隔可以小于WDM沟道宽度，更具体地，可以小于用于选择沟道波长的阵列波导光栅（AWG）或其他滤波器的通道通带。

公开(公告)号：US09356674B2

公开(公告)日：2016-05-31

申请号：US12652150

申请日：2010-01-05

申请人： Jun Zheng ,  Mark Kent ,  Vinko Erceg

发明人： Jun Zheng ,  Mark Kent ,  Vinko Erceg

IPC分类号： H04B17/00 ,  H04B7/06 ,  H04B7/04 ,  H04L1/00 ,  H04L25/02

CPC分类号： H04B7/0626 ,  H04B7/0417 ,  H04L1/0026 ,  H04L1/003 ,  H04L25/0202

摘要： A mobile device estimates channel state information (CSI) comprising, for example, CQI and/or SNR, for a downlink channel. The estimated CSI is non-uniformly quantized and transmitted to the base station over a finite-rate feedback channel. Different portions of the estimated CSI are quantized using different quantization step sizes, which are determined according to a performance metric function such as a channel capacity function of the estimated CSI. A quantization step size for a portion of the estimated CSI is increased if a low distribution probability is indicated by the portion of the estimated CSI. A quantization step size for a portion of the estimated CSI is decreased if a high distribution probability is indicated. The mobile device quantizes the estimated CSI using the determined quantization step sizes to transmit to the base station over the finite-rate feedback channel. Downlink data transmission is received according to the transmitted CSI.

摘要翻译： 移动设备针对下行链路信道估计包括例如CQI和/或SNR的信道状态信息（CSI）。 估计的CSI被不均匀地量化，并通过有限速率反馈信道发送到基站。 使用不同的量化步长量化估计的CSI的不同部分，这些量化步长根据诸如估计的CSI的信道容量函数的性能度量功能来确定。 如果估计的CSI的部分指示低分布概率，则估计的CSI的一部分的量化步长增加。 如果指示高分配概率，则估计CSI的一部分的量化步长减小。 移动设备使用确定的量化步长量化估计的CSI，以便通过有限速率反馈信道向基站发送。 根据发送的CSI接收下行链路数据传输。

公开(公告)号：US09341774B2

公开(公告)日：2016-05-17

申请号：US13357142

申请日：2012-01-24

申请人： Jun Zheng ,  I-Lung Ho ,  Hung-Lun Chang

发明人： Jun Zheng ,  I-Lung Ho ,  Hung-Lun Chang

IPC分类号： H04B10/00 ,  G02B6/34 ,  G02B6/12 ,  G02B6/42

CPC分类号： G02B6/12019 ,  G02B6/4215

摘要： A laser array optical coupling assembly may be used to couple a laser array to an arrayed waveguide grating (AWG), for example, in an optical transmitter in a wavelength division multiplexed (WDM) optical communication system. The laser array optical coupling assembly may include an optical fiber tip array with polished optical fiber tips providing a reduced mode field diameter to improve coupling efficiency with the laser array. The laser array optical coupling assembly may also include a direct coupling of the laser array to the AWG with modified AWG inputs reducing the mode field diameter to improve coupling efficiency with the laser array. The laser array optical coupling assembly may be used, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON) or in other transmitters or transceivers in a WDM system capable of transmitting and receiving optical signals on multiple channel wavelengths.

摘要翻译： 可以使用激光阵列光耦合组件将激光器阵列耦合到阵列波导光栅（AWG），例如在波分复用（WDM）光通信系统中的光发射机中。 激光阵列光耦合组件可以包括具有抛光光纤尖端的光纤尖端阵列，其提供减小的模场直径以提高与激光器阵列的耦合效率。 激光阵列光耦合组件还可以包括激光器阵列与AWG的直接耦合，其具有改进的AWG输入，降低模场直径以提高与激光器阵列的耦合效率。 激光阵列光耦合组件可用于例如WDM无源光网络（PON）中的光线路终端（OLT）或能够在多个信道上发射和接收光信号的WDM系统中的其他发射机或收发机 波长。

公开(公告)号：US09184969B2

公开(公告)日：2015-11-10

申请号：US13453703

申请日：2012-04-23

申请人： Ron Porat ,  Vinko Erceg ,  Jun Zheng

发明人： Ron Porat ,  Vinko Erceg ,  Jun Zheng

IPC分类号： H04L27/26 ,  H04L1/00 ,  H04L5/00 ,  H04L1/06 ,  H04B7/04 ,  H04B7/06

CPC分类号： H04L27/2613 ,  H04B7/0452 ,  H04B7/0669 ,  H04B7/0697 ,  H04L1/0017 ,  H04L1/0025 ,  H04L1/0041 ,  H04L1/007 ,  H04L1/0075 ,  H04L1/0625 ,  H04L5/0092 ,  H04L27/2626 ,  H04L27/2647 ,  H04L2001/0098

摘要： Preamble for use within single user, multiple user, multiple access, and/or MIMO wireless communications. A selected preamble type is employed for use in generating a signal to be transmitted from one communication device to at least one other communication device. Depending upon a desired operational mode, as few as one preamble type, or two or more preamble types may be associated with a given operational mode. When operating in accordance with a given operational mode, a preamble type is selected from available preamble types of an operational mode. A preferred implementation may include two respective preamble types such that one preamble type is used for single user (SU) operation with transmit beamforming weights applied at the beginning of the packet or for open loop SU transmissions only, while the other preamble type, having an multiple user (MU) characteristic, is used for both SU beamforming and MU operations.

摘要翻译： 在单用户，多用户，多路访问和/或MIMO无线通信中使用的前导码。 选择的前导码类型被用于生成要从一个通信设备发送到至少一个其他通信设备的信号。 根据期望的操作模式，可以将少至一个前同步码类型或两个或多个前导码类型与给定操作模式相关联。 当根据给定的操作模式操作时，从操作模式的可用前导码类型中选择前导码类型。 优选实现可以包括两个相应的前导码类型，使得一个前导码类型被用于单个用户（SU）操作，其中在分组的开始处应用的发送波束成形权重或仅用于开环SU传输，而另一个前导码类型具有 多用户（MU）特性用于SU波束形成和MU操作。

公开(公告)号：US20150294743A1

公开(公告)日：2015-10-15

申请号：US14683645

申请日：2015-04-10

申请人： Xian-Jun Zheng ,  Willy Liu

发明人： Xian-Jun Zheng ,  Willy Liu

IPC分类号： G21B1/15 ,  G21B1/05

CPC分类号： G21B1/15 ,  G21B1/05 ,  Y02E30/126 ,  Y02E30/16

摘要： A thermonuclear reaction system for generating a thermonuclear fusion reaction includes a reaction chamber and a number of particle beam emitters. The reaction system has at least four particle beam emitters supported spatially around oriented toward a common focal region of the reaction chamber for directing at least four plasma beams that are spatially symmetrical in three dimensional space. Each of the plasma beams are directed towards a plasma region in the geometric center. A stable collapse of the plasma region permits a controllable and sufficiently long confinement time, which in combination with necessary temperature and density conditions may ignite and sustain fusion reactions and achieve a net energy output. Optionally, laser beams or other input energy devices may also be oriented around and toward the common focal region to direct high-energy laser beams at the plasma ball to assist with instigation of the fusion reaction.

摘要翻译： 用于产生热核聚变反应的热核反应系统包括反应室和多个粒子束发射器。 该反应系统具有至少四个沿空间支撑的粒子束发射器，朝向反应室的公共焦点区域定向，以引导在三维空间中空间对称的至少四个等离子体束。 每个等离子体束指向几何中心的等离子体区域。 等离子体区域的稳定塌陷允许可控且足够长的约束时间，其结合必要的温度和密度条件可以点燃和维持聚变反应并实现净能量输出。 可选地，激光束或其它输入能量装置也可以围绕并朝着公共焦点区域定向，以在等离子体球处引导高能激光束以帮助引发融合反应。

公开(公告)号：US08934572B2

公开(公告)日：2015-01-13

申请号：US13217830

申请日：2011-08-25

申请人： Jun Zheng ,  Min Chuin Hoo ,  Vinko Erceg

发明人： Jun Zheng ,  Min Chuin Hoo ,  Vinko Erceg

IPC分类号： H04K1/02 ,  H04L5/00 ,  H04L27/26 ,  H04L25/03

CPC分类号： H04L27/227 ,  H04B7/084 ,  H04L5/0026 ,  H04L5/0048 ,  H04L25/03866 ,  H04L27/20 ,  H04L27/2613 ,  H04L27/2621

摘要： Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications. An appropriately designed phase rotation vector and/or appropriately designed cyclic shift delays (CSDs) are applied to respective sub-band components of the preamble. With appropriately designed CSDs, certain fields within the preamble are not modified. For example, a legacy short training field (L-STF) of the preamble is not changed when using appropriately designed CSDs. The respective CSDs may be implemented as integer multiples of a common CSD (e.g., 0×CSD, 1×CSD, 2×CSD, etc. such that one of the values of such a CSD vector may be zero [0], another may be the common CSD itself, etc.). Also, by employing an appropriately designed phase rotation vector and integer multiples of a CSD to a preamble, the respective peak to average power ratio (PAPR) between different respective fields within the preamble may be minimized.

摘要翻译： 在多用户，多路访问和/或MIMO无线通信中的前导码的相位旋转。 将适当设计的相位旋转矢量和/或适当设计的循环移位延迟（CSD）应用于前导码的各个子带分量。 通过适当设计的CSD，前导码中的某些字段不会被修改。 例如，使用适当设计的CSD时，前导码的传统短训练字段（L-STF）不会改变。 相应的CSD可以实现为公共CSD的整数倍（例如，0×CSD，1×CSD，2×CSD等，使得这样的CSD向量的值之一可以为零[0]，另一个可以 成为常见的CSD本身等）。 此外，通过将适当设计的相位旋转向量和CSD的整数倍应用于前同步码，可以使前导码内的不同相应场之间的相应峰均功率比（PAPR）最小化。

公开(公告)号：US08934432B2

公开(公告)日：2015-01-13

申请号：US13611957

申请日：2012-09-12

申请人： Jun Zheng ,  Chengjin Zhang ,  Pieter van Rooyen

发明人： Jun Zheng ,  Chengjin Zhang ,  Pieter van Rooyen

IPC分类号： H04W4/00 ,  H04J3/00 ,  H04B7/04

CPC分类号： H04B7/0452 ,  H04B7/0408 ,  H04B7/0413 ,  H04L5/1469

摘要： Certain aspects of a method and system for processing signals in a communication system may include maximizing system capacity for a time division duplex (TDD) multiple-input multiple-output (MIMO) system, based on reducing a search range within which to find a group of signals having maximum channel gain. At least one of: a first signal for a first user and a second signal for a second user may be selected, which are both within the reduced search range, and which provides a maximum system capacity. The first signal for the first user may be selected from the reduced search range corresponding to a channel gain that is greater than a channel gain corresponding to a remaining portion of the reduced search range. The reduced search range may be generated by sorting a plurality of signals based on a channel gain corresponding to each of the plurality of signals.

摘要翻译： 用于处理通信系统中的信号的方法和系统的某些方面可以包括：基于减少在其中寻找组的搜索范围来最大化时分双工（TDD）多输入多输出（MIMO）系统的系统容量 的信号具有最大的信道增益。 可以选择以下中的至少一个：可以选择第一用户的第一信号和第二用户的第二信号，这两者都在缩小的搜索范围内，并且提供最大的系统容量。 用于第一用户的第一信号可以从对应于比还原搜索范围的剩余部分对应的信道增益大的信道增益的缩小搜索范围中选择。 可以通过基于与多个信号中的每个信号相对应的信道增益对多个信号进行排序来生成缩小搜索范围。

公开(公告)号：US08817899B2

公开(公告)日：2014-08-26

申请号：US13310872

申请日：2011-12-05

申请人： Mark Kent ,  Vinko Erceg ,  Jun Zheng ,  Uri Landau

发明人： Mark Kent ,  Vinko Erceg ,  Jun Zheng ,  Uri Landau

IPC分类号： H04L27/28

CPC分类号： H04B7/0417 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0641

摘要： Aspects of a method and system for an alternating delta quantizer for limited feedback MIMO pre-coders may comprise quantizing a change in channel state information in a MIMO pre-coding system onto at least a first and a second codebook, each of which comprises one or more unitary matrices, using a cost function; feeding back, in an alternating manner, an index to an element of at least the first codebook or the second codebook, associated with the quantizing, from a receiver to a transmitter in said MIMO pre-coding system, and generating the at least first and second codebook based on at least the channel state information. The channel state information may be a matrix V and the cost function may be defined by the following relationship: f ⁡ ( A ) = ( 1 N ⁢ ∑ j = 1 N ⁢  a jj  2 ) where A is a matrix of size N by N and aij is element (i,j) of matrix A.

摘要翻译： 用于有限反馈MIMO预编码器的交替式量化器的方法和系统的方面可以包括将MIMO预编码系统中的信道状态信息的改变量化到至少第一和第二码本上，每个码本包括一个或 更多的单位矩阵，使用成本函数; 以交替的方式，向所述MIMO预编码系统中的从接收机到发射机的与量化相关联的至少第一码本或第二码本的元素的索引进行反馈，并且生成至少第一和 至少基于信道状态信息的第二码本。 信道状态信息可以是矩阵V，并且成本函数可以由以下关系定义：f⁡（A）=（1NΣj = 1 Na jj her 2）其中A是大小的矩阵 N是N，aij是矩阵A的元素（i，j）。

公开(公告)号：US08817497B2

公开(公告)日：2014-08-26

申请号：US13131587

申请日：2008-12-03

申请人： Jun Zheng ,  Eng Hwee Quek ,  Huaming Guo

发明人： Jun Zheng ,  Eng Hwee Quek ,  Huaming Guo

IPC分类号： H02M3/335 ,  H02M1/44

CPC分类号： H02M3/33507 ,  H02M1/44

摘要： A switching power converter (200, 300, 400, 500) comprises a transformer (211) with a parasitic capacitance (212), a first switch (207) coupled to the transformer (211) and configured to couple or decouple a load (219) to or from a power source via the transformer (211), a switch controller (205) coupled to the first switch (207) and configured to generate a switch drive signal (206) for turning on or off the first switch (207) according to switching cycles, and a bypass circuit configured to provide a bypass path for the parasitic elements such as the parasitic capacitance (212). The bypass circuit may be coupled in parallel with the auxiliary winding (220), the primary winding (213), or the secondary winding (214) of the transformer (211). High frequency ringing and EMI/RFI is reduced when the bypass circuit is enabled.

摘要翻译： 开关功率转换器（200,300,400,500）包括具有寄生电容（212）的变压器（211），耦合到变压器（211）的第一开关（207）并且被配置为耦合或解耦负载（219 ）连接到第一开关（207）并且被配置为产生用于接通或断开第一开关（207）的开关驱动信号（206）的开关控制器（205） 以及旁路电路，其被配置为为诸如寄生电容（212）的寄生元件提供旁路路径。 旁路电路可以与变压器（211）的辅助绕组（220），初级绕组（213）或次级绕组（214）并联耦合。 当旁路电路使能时，高频振铃和EMI / RFI降低。

公开(公告)号：US08767854B2

公开(公告)日：2014-07-01

申请号：US13221017

申请日：2011-08-30

申请人： Jun Zheng ,  Vinko Erceg ,  Andrew J. Blanksby

发明人： Jun Zheng ,  Vinko Erceg ,  Andrew J. Blanksby

IPC分类号： H04L5/12 ,  H04L23/02

CPC分类号： H04L27/2647 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/0618 ,  H04L5/0057 ,  H04L27/2626

摘要： Modulation code set (MCS) and LDPC (Low Density Parity Check) coding within multiple user, multiple access, and/or MIMO wireless communications. Selective operation in accordance with different operational modes is performed. Operation within a first mode may correspond to that which is in full compliance with a given protocol, standard, and/or recommended practice, while operation within a second mode may correspond to that which provides additional/augmented capability and/or functionality with respect to that protocol, standard, and/or recommended practice. Operational modes selectivity may be made between proprietary and non-proprietary modes of operation. All available modulation coding sets (MCSs) may be in employed by providing such multi-mode operation. When operating within one of the operational modes (e.g., proprietary), a signal is generated to include an integer number of data bits per orthogonal frequency division multiplexing (OFDM) symbol using any desired operation (e.g., floor, ceiling, rounding, etc.).

摘要翻译： 多用户，多路访问和/或MIMO无线通信中的调制码集（MCS）和LDPC（低密度奇偶校验）编码。 执行根据不同操作模式的选择性操作。 在第一模式中的操作可以对应于完全符合给定协议，标准和/或推荐做法的操作，而在第二模式中的操作可以对应于相对于提供附加/增强能力和/或功能的操作 该协议，标准和/或推荐的做法。 可以在专有和非专有操作模式之间进行操作模式选择。 可以通过提供这种多模式操作来使用所有可用的调制编码集（MCS）。 当在一种操作模式（例如，专有）中操作时，使用任何期望的操作（例如，地板，天花板，四舍五入等）生成信号以包括每个正交频分复用（OFDM）符号的整数个数据位。 ）。