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11. 发明授权

US08750089B2 Method and system for iterative discrete fourier transform (DFT) based channel estimation using minimum mean square error (MMSE) techniques 有权
标题翻译：使用最小均方误差（MMSE）技术的迭代离散傅里叶变换（DFT）信道估计的方法和系统
公开(公告)号：US08750089B2
公开(公告)日：2014-06-10
申请号：US12732975
申请日：2010-03-26
申请人： Sirikiat Ariyavisitakul , Jun Zheng
发明人： Sirikiat Ariyavisitakul , Jun Zheng
IPC分类号： H04J11/00 , H04L25/02 , H04L25/03 , H04L1/00
CPC分类号： H04L25/0204 , H04L1/005 , H04L5/0005 , H04L25/0206 , H04L25/024 , H04L25/0242 , H04L2025/03611 , H04W24/00 , H04W84/12
摘要： A method and system for iterative discrete Fourier transform (DFT) based channel estimation using minimum mean square error (MMSE) techniques are presented. Aspects of the method and system include a procedure for computing channel estimates in both the time domain and frequency domain (or mixed domain) using an iterative DFT method based on MMSE techniques. One aspect of the method and system may achieve low computational complexity and produce more accurate channel estimate values in low signal to noise ratio (SNR) regimes in comparison to conventional DFT-based channel estimation methods, which utilize least squares (LS) techniques. The method and system disclosed herein may be practiced in connection with a wide range of orthogonal frequency division multiplexing (OFDM) based systems, for example wireless local area networks (WLAN, for example IEEE 802.11 WLAN systems), and LTE systems.
摘要翻译：提出了使用最小均方误差（MMSE）技术的基于迭代离散傅里叶变换（DFT）的信道估计的方法和系统。该方法和系统的方面包括使用基于MMSE技术的迭代DFT方法计算时域和频域（或混合域）中的信道估计的过程。与使用最小二乘（LS）技术的传统的基于DFT的信道估计方法相比，该方法和系统的一个方面可以实现低计算复杂度并且在低信噪比（SNR）方案中产生更准确的信道估计值。本文公开的方法和系统可以结合宽范围的基于正交频分复用（OFDM）的系统，例如无线局域网（WLAN，例如IEEE 802.11 WLAN系统）和LTE系统来实施。

12. 发明申请

US20130271288A1 METHODS AND APPARATUSES FOR COMMUNICATION IN A PERSONAL AREA NETWORK 有权
标题翻译：个人网络通信的方法和设备
公开(公告)号：US20130271288A1
公开(公告)日：2013-10-17
申请号：US13996059
申请日：2010-12-20
申请人： Zheng Liang , Gang Liu , Jun Zheng , Haibo Wen , Fanxiang Bin , Chunyan Yao
发明人： Zheng Liang , Gang Liu , Jun Zheng , Haibo Wen , Fanxiang Bin , Chunyan Yao
IPC分类号： H04W52/02
CPC分类号： H04W52/0203 , H04W28/16 , H04W52/0216 , H04W52/0219 , H04W52/0229 , H04W52/0258 , H04W76/28 , H04W84/18 , Y02D70/144
摘要： Provided are methods and apparatuses for communication in a personal area network. A method comprises transmitting, to a personal area network coordinator, joint information of a sensor device, wherein the joint information is indicated by reserved bits and includes a type, an overall successful channel access rate, and a latest node buffer occupation rate of the sensor device; receiving, from the personal area network coordinator, information regarding adjusted active duration and duty cycle of the communication of the sensor device, wherein the adjustments of the active duration and duty cycle are determined based upon the joint information; and performing further communication based upon the adjusted active duration and duty cycle. A further method comprises receiving, from a sensor device, joint information which is indicated by reserved bits and includes a type, an overall successful channel access rate, and a latest node buffer occupation rate of the sensor device; adjusting, based upon the joint information, an active duration and a duty cycle of the communication of the sensor device; and transmitting information regarding the adjusted active duration and the duty cycle to the sensor device. With the present invention, multimedia services in low rate and low power wireless sensor networks are supported.
摘要翻译：提供了用于个人区域网络中的通信的方法和装置。一种方法包括向个人区域网络协调器发送传感器设备的联合信息，其中联合信息由保留位指示，并且包括传感器的类型，总成功信道访问速率和最新节点缓冲器占用率设备; 从所述个人区域网络协调器接收关于所述传感器设备的通信的调整的有效持续时间和占空比的信息，其中所述活动持续时间和占空比的调整基于所述联合信息来确定; 并且基于调整的有效持续时间和占空比执行进一步的通信。另一种方法包括从传感器设备接收由保留位指示的联合信息，并且包括传感器设备的类型，整体成功的信道访问速率和最新的节点缓冲器占用率; 基于联合信息调整传感器装置的通信的有效持续时间和占空比; 以及将关于经调整的有效持续时间和占空比的信息发送到传感器装置。利用本发明，支持低速率和低功率无线传感器网络中的多媒体业务。

13. 发明授权

US08460794B2 Self-aligned wafer bonding 有权
标题翻译：自对准晶片接合
公开(公告)号：US08460794B2
公开(公告)日：2013-06-11
申请号：US12500892
申请日：2009-07-10
申请人： Jun Zheng , Dadi Setiadi
发明人： Jun Zheng , Dadi Setiadi
IPC分类号： B32B9/00 , B32B33/00
CPC分类号： B32B7/005 , B23K31/02 , H01L21/187 , H01L23/29 , H01L24/81 , H01L25/50 , H01L2224/0401 , H01L2224/05571 , H01L2224/13022 , H01L2224/131 , H01L2224/13147 , H01L2224/16111 , H01L2224/16147 , H01L2224/81002 , H01L2224/81143 , H01L2224/81191 , H01L2224/81203 , H01L2224/81385 , H01L2224/81805 , H01L2224/94 , H01L2225/06513 , H01L2924/00014 , H01L2924/0002 , H01L2924/01029 , H01L2924/01033 , H01L2924/0105 , H01L2924/01079 , H01L2924/01322 , Y10T428/24562 , Y10T428/24802 , Y10T428/24851 , Y10T428/24917 , Y10T428/31504 , Y10T428/31678 , H01L2224/81001 , H01L2224/05552
摘要： A wafer article includes a substrate, two or more hydrophilic areas disposed on the substrate, hydrophobic areas surrounding the hydrophilic areas, and a eutectic bonding material disposed on the substrate. A wafer apparatus including two wafers having complimentary hydrophilic regions and eutectic bonding material is disclosed and a method of forming a bonded wafer articles is disclosed.
摘要翻译：晶片制品包括衬底，设置在衬底上的两个或更多个亲水区域，围绕亲水区域的疏水区域以及设置在衬底上的共晶接合材料。公开了包括具有互补的亲水区域和共晶接合材料的两个晶片的晶片装置，并且公开了形成接合晶片制品的方法。

14. 发明申请

US20130109448A1 RF TRANSCEIVER WITH BEAMFORMING ANTENNA AND METHODS FOR USE THEREWITH 有权
标题翻译：射频收发器与波束形成天线及其使用方法
公开(公告)号：US20130109448A1
公开(公告)日：2013-05-02
申请号：US13329302
申请日：2011-12-18
申请人： David Garrett , Jun Zheng , Hamid Eslami
发明人： David Garrett , Jun Zheng , Hamid Eslami
IPC分类号： H04W88/02
CPC分类号： H04B7/0617 , H04B7/0623 , H04B7/0695
摘要： An RF transceiver includes a configuration controller that generates a control signal to select a first candidate radiation pattern for a beamforming antenna based on a first plurality of steering weights. An RF transceiver section broadcasts a first beacon transmission with the first candidate radiation pattern, and generates feedback signals to indicate if a first remote station has responded to the first beacon transmission. When the first remote station has responded to the first beacon transmission, the configuration controller stores the first plurality of steering weights used in association with the beacon transmission and generates control signals to the RF transceiver section to use the first candidate radiation pattern when communicating with the first remote station.
摘要翻译： RF收发器包括配置控制器，其基于第一多个转向权重产生控制信号以选择用于波束成形天线的第一候选辐射图。 RF收发器部分利用第一候选辐射图广播第一信标传输，并且产生反馈信号以指示第一远程站是否响应于第一信标传输。当第一远程站对第一信标传输作出响应时，配置控制器存储与信标传输相关联使用的第一多个转向权重，并且当与该收发器部分通信时产生控制信号到RF收发器部分以使用第一候选辐射模式第一个远程站。

15. 发明授权

US08412128B2 Method and system for a double search user group selection scheme with range reduction in TDD multiuser MIMO downlink transmission 有权
公开(公告)号：US08412128B2
公开(公告)日：2013-04-02
申请号：US13074708
申请日：2011-03-29
申请人： Jun Zheng , Chengjin Zhang , Pieter van Rooyen
发明人： Jun Zheng , Chengjin Zhang , Pieter van Rooyen
IPC分类号： H04B1/02 , H04B7/02
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.

16. 发明授权

US08358937B2 Systems and methods for reducing clipping in multichannel modulated optical systems 有权
标题翻译：用于减少多通道调制光学系统中的限幅的系统和方法
公开(公告)号：US08358937B2
公开(公告)日：2013-01-22
申请号：US11753162
申请日：2007-05-24
申请人： Jun Zheng
发明人： Jun Zheng
IPC分类号： H04B10/00 , H01S3/00
CPC分类号： H04B10/504 , H04B10/25751 , H04B10/58
摘要： A system for reducing clipping may be used between a multichannel RF source and a laser to reduce or correct clipping that might occur in the laser as a result of negative spikes or peaks in a multichannel RF signal. The system generally includes a clipping correction circuit that receives the multichannel RF signal and responsive to the RF signal, prevents one or more of the negative peaks in the RF signal from causing clipping. The clipping correction circuit may either detect an envelope of the RF signal and/or may detect one or more peaks in the RF signal. One or more negative peaks may be prevented from causing clipping by adjusting a bias current provided by a bias control circuit and/or by modifying the RF signal with one or more clipping correction pulses coinciding with one or more negative peaks.
摘要翻译：可以在多通道RF源和激光器之间使用用于减少削波的系统，以减少或纠正由于多通道RF信号中的负尖峰或峰值而在激光器中可能发生的限幅。系统通常包括限幅校正电路，其接收多声道RF信号并且响应于RF信号，防止RF信号中的一个或多个负峰值引起限幅。限幅校正电路可以检测RF信号的包络和/或可以检测RF信号中的一个或多个峰值。可以通过调整由偏置控制电路提供的偏置电流和/或通过用与一个或多个负峰重合的一个或多个限幅校正脉冲修改RF信号来防止一个或多个负峰值引起限幅。

17. 发明申请

US20130016977A1 LASER ARRAY MUX ASSEMBLY WITH EXTERNAL REFLECTOR FOR PROVIDING A SELECTED WAVELENGTH OR MULTIPLEXED WAVELENGTHS 有权
标题翻译：具有外部反射器的激光阵列复用器组件，用于提供选定的波长或多个波长
公开(公告)号：US20130016977A1
公开(公告)日：2013-01-17
申请号：US13357130
申请日：2012-01-24
申请人： Jun Zheng , Stefan J. Murry
发明人： Jun Zheng , Stefan J. Murry
IPC分类号： H04J14/02
CPC分类号： H01S5/0268 , H01S5/1028 , H01S5/141 , H01S5/146 , H01S5/4062 , H01S5/4087 , H04B10/2587 , H04J14/0282
摘要： A laser array mux assembly generally includes an array of laser emitters coupled to an optical multiplexer, such as an arrayed waveguide grating (AWG), with an external partial reflector after the multiplexer. Each of the laser emitters may include a gain region that emits light across a range of wavelengths including, for example, channel wavelengths in an optical communication system. The AWG filters the emitted light from each of the laser emitters at different channel wavelengths associated with each of the laser emitters. The reflector reflects at least a portion of the filtered light such that lasing occurs at the channel wavelengths of the reflected light. The laser array mux assembly may be used to generate an optical signal at a selected channel wavelength or to generate and combine optical signals at multiple channel wavelengths.
摘要翻译：激光器阵列多路复用器组件通常包括耦合到诸如阵列波导光栅（AWG）的光学多路复用器的激光发射器的阵列，在多路复用器之后具有外部部分反射器。每个激光发射器可以包括在包括例如光通信系统中的信道波长的波长范围内发射光的增益区域。 AWG在与每个激光发射器相关联的不同通道波长处对来自每个激光发射器的发射光进行滤波。反射器反射至少一部分经滤光的光，使得在反射光的通道波长处发生激光。可以使用激光阵列多路复用器组件来产生所选择的信道波长的光信号，或者产生并组合多个信道波长的光信号。

18. 发明申请

US20120269125A1 Short training field (STF) for use within single user, multiple user, multiple access, and/or MIMO wireless communications 有权
标题翻译：用于单用户，多用户，多路访问和/或MIMO无线通信的短训练场（STF）
公开(公告)号：US20120269125A1
公开(公告)日：2012-10-25
申请号：US13454021
申请日：2012-04-23
申请人： Ron Porat , Jun Zheng
发明人： Ron Porat , Jun Zheng
IPC分类号： H04W4/00
CPC分类号： H04L27/2618 , H04L27/2602 , H04L27/2613 , H04L27/2666 , H04W52/18 , H04W72/1231 , H04W84/12
摘要： Short training field (STF) for use within single user, multiple user, multiple access, and/or MIMO wireless communications. An STF design as is made such that the power associated with the tone indices at the edges of the STF design is relatively less than the power associated with the tone indices more centrally located within the STF design. Also, when multiple respective operational modes are supported (e.g., 1 MHz and 2 MHz), the respective STF designs corresponding to those respective operational modes have a great deal of similarity. For example, the respective STF designs for different respective operational modes may have certain common STF tone indices among those respective STF designs.
摘要翻译：用于单用户，多用户，多路访问和/或MIMO无线通信的短训练场（STF）。 STF设计被做成使得与STF设计边缘处的色调指数相关联的功率相对于与位于STF设计中更集中的色调指数相关联的功率相对较小。此外，当支持多个相应的操作模式（例如，1MHz和2MHz）时，对应于这些相应操作模式的相应STF设计具有大量的相似性。例如，用于不同的各个操作模式的相应的STF设计可以在那些相应的STF设计中具有某些共同的STF色调索引。

19. 发明授权

US08199537B2 Detecting light load conditions and improving light load efficiency in a switching power converter 有权
标题翻译：检测轻载条件并提高开关电源转换器的轻负载效率
公开(公告)号：US08199537B2
公开(公告)日：2012-06-12
申请号：US12388709
申请日：2009-02-19
申请人： Liang Yan , Xiaoyan Wang , Jun Zheng , Junjie Zheng , Clarita Poon
发明人： Liang Yan , Xiaoyan Wang , Jun Zheng , Junjie Zheng , Clarita Poon
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M2001/0032 , Y02B70/16
摘要： A switching power converter detects low load conditions based on the ratio of a first peak current value for peak current switching in constant voltage regulation mode to a second peak current value for peak current switching in constant current regulation mode. The power supply load is considered to have a low load if the ratio is lower than a predetermined threshold. Once a low load condition is detected, the switching frequency of the switching power converter is reduced to a level that minimizes switching loss in the power converter. In addition, the switching power converter also adjusts the switching frequency according to the sensed input line voltage. An offset is added to the switching period to reduce the switching frequency of the switching power converter, as the input line voltage is increased.
摘要翻译：开关电源转换器基于用于恒定电流调节模式下的峰值电流切换的恒定电压调节模式中的峰值电流切换的第一峰值电流值与用于恒定电流调节模式下的峰值电流切换的第二峰值电流值的比率来检测低负如果该比率低于预定阈值，则电源负载被认为具有低负载。一旦检测到低负载状态，则将开关功率转换器的开关频率降低到最小化功率转换器中的开关损耗的水平。此外，开关功率转换器还根据感测的输入线电压来调节开关频率。随着输入线电压的增加，偏置被加到开关周期以降低开关功率转换器的开关频率。

20. 发明授权

US08184732B2 Method and system for codebook design for pre-coding techniques 有权
标题翻译：用于预编码技术的码本设计方法和系统
公开(公告)号：US08184732B2
公开(公告)日：2012-05-22
申请号：US12111299
申请日：2008-04-29
申请人： Jun Zheng , Vinko Erceg , Mark Kent
发明人： Jun Zheng , Vinko Erceg , Mark Kent
IPC分类号： H04B7/02
CPC分类号： H04L25/03343 , H04L25/0204 , H04L25/0248 , H04L27/18 , H04L2025/03401 , H04L2025/03426
摘要： Aspects of a method and system for codebook design for pre-coding techniques may include generating one or more matrices whose matrix elements are from a constant amplitude signal constellation, wherein each of the one or more generated matrices may comprise one or more orthonormal columns, and one of the generated one or more matrices may be an identity matrix. Any two of the generated one or more matrices may be separated by at least a minimum pairwise distance. One or more pre-coding codebooks may be generated, each of which may comprise one or more codebook elements that may be of a same matrix rank. Each of the codebook elements may be generated from a subset of columns from one of the generated one or more matrices. A signal may be pre-coded for transmission using the one or more pre-coding codebooks.
摘要翻译：用于预编码技术的码本设计的方法和系统的方面可以包括生成其矩阵元素来自恒定幅度信号星座的一个或多个矩阵，其中所述一个或多个生成的矩阵中的每一个可以包括一个或多个正交列，以及生成的一个或多个矩阵中的一个可以是单位矩阵。生成的一个或多个矩阵中的任何两个可以被至少最小成对距离分开。可以生成一个或多个预编码码本，每个码本可以包括可以具有相同矩阵等级的一个或多个码本元素。可以从所生成的一个或多个矩阵之一的列的子集生成每个码本元素。可以使用一个或多个预编码码本来预先编码用于传输的信号。

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