专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明申请

US20080165870A1 METHOD AND SYSTEM FOR A DELTA QUANTIZER FOR MIMO PRE-CODERS WITH FINITE RATE CHANNEL STATE INFORMATION FEEDBACK 有权
标题翻译：用于具有有限速率信道状态信息反馈的MIMO预编码器的DELTA量子的方法和系统
公开(公告)号：US20080165870A1
公开(公告)日：2008-07-10
申请号：US11767123
申请日：2007-06-22
申请人： Mark Kent , Vinko Erceg , Jun Zheng
发明人： Mark Kent , Vinko Erceg , Jun Zheng
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 a delta quantizer for MIMO pre-coders with finite rate channel state information feedback may include quantizing a change in channel state information in a MIMO pre-coding system onto a codebook, which comprises one or more unitary matrices, using a cost function. The codebook may be generated based on at least the channel state information. The channel state information may comprise a matrix V and the cost function f(A) 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. One or more unitary matrices may be generated from at least a first set of matrices and a second set of matrices, where the first set of matrices may comprise one or more Givens matrices. A dynamic range and a resolution of the codebook may be modified.
摘要翻译：用于具有有限速率信道状态信息反馈的MIMO预编码器的Δ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变化量化到包括一个或多个酉矩阵的码本上，使用成本函数。码本可以至少基于信道状态信息生成。信道状态信息可以包括矩阵V，并且成本函数f（A）可以由以下关系定义： $/ MROW> =（1MFRAC>Σj=1N>>其中A是N大小的矩阵，aij是矩阵A的元素（i，j）。一个或多个酉矩阵可以从至少第一组矩阵和第二组矩阵，其中第一组矩阵可以包括一个或多个Givens矩阵。可以修改码本的动态范围和分辨率。$

82. 发明授权

US07285243B2 Quantitative determination of atmospheric hydroperoxyl radical 失效
标题翻译：大气氢过氧基的定量测定
公开(公告)号：US07285243B2
公开(公告)日：2007-10-23
申请号：US10930587
申请日：2004-08-30
申请人： Stephen R. Springston , Judith Lloyd , Jun Zheng
发明人： Stephen R. Springston , Judith Lloyd , Jun Zheng
IPC分类号： G01N21/76 , G01N15/06
CPC分类号： G01N21/76
摘要： A method for the quantitative determination of atmospheric hydroperoxyl radical comprising: (a) contacting a liquid phase atmospheric sample with a chemiluminescent compound which luminesces on contact with hydroperoxyl radical; (b) determining luminescence intensity from the liquid phase atmospheric sample; and (c) comparing said luminescence intensity from the liquid phase atmospheric sample to a standard luminescence intensity for hydroperoxyl radical. An apparatus for automating the method is also included.
摘要翻译：一种定量测定大气中的氢过氧自由基的方法，包括：（a）使液相大气样品与与氢过氧基自由基接触发光的化学发光化合物接触; （b）从液相大气样品确定发光强度; 和（c）将来自液相大气样品的所述发光强度与用于氢过氧基的标准发光强度进行比较。还包括用于使该方法自动化的装置。

83. 发明申请

US20070066332A1 Method and system for a greedy user group selection with range reduction in TDD multiuser MIMO downlink transmission 有权
标题翻译：用于在TDD多用户MIMO下行链路传输中具有范围缩减的贪心用户组选择的方法和系统
公开(公告)号：US20070066332A1
公开(公告)日：2007-03-22
申请号：US11231701
申请日：2005-09-21
申请人： Chengjin Zhang , Jun Zheng , Pieter van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Pieter van Rooyen
IPC分类号： H04B7/00 , H04Q7/20 , H04B1/02
CPC分类号： H04W8/005 , H04B7/0408
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) multiuser multiple-input multiple-output (MIMO) downlink system, based on a single signal for a single user within a reduced search range or the single signal for the single user and at least one other signal for one other user within 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. The single signal for the single 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.
摘要翻译：用于在通信系统中处理信号的方法和系统的某些方面可以包括基于用于单个用户内的单个用户的单个信号来最大化时分双工（TDD）多用户多输入多输出（MIMO）下行链路系统的系统容量减少的搜索范围或针对单个用户的单个信号，以及在缩小搜索范围的剩余部分内的另一个用户的至少一个其他信号。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。单个用户的单个信号可以从对应于大于对应于缩小的搜索范围的剩余部分的信道增益的信道增益的缩小搜索范围中选择。

84. 发明申请

US20070066225A1 Double search algorithm of user group selection for multiuser MIMO downlink transmission 有权
标题翻译：用户组选择双用户MIMO下行链路传输的双重搜索算法
公开(公告)号：US20070066225A1
公开(公告)日：2007-03-22
申请号：US11231501
申请日：2005-09-21
申请人： Jun Zheng , Chengjin Zhang , Severine Catreux-Erceg , Vinko Erceg , Pieter Roux , Pieter Rooyen
发明人： Jun Zheng , Chengjin Zhang , Severine Catreux-Erceg , Vinko Erceg , Pieter Roux , Pieter Rooyen
IPC分类号： H04B17/00 , H04B7/00
CPC分类号： H04B7/0697 , H04B7/0452 , H04B7/0626
摘要： A method and system for a double search algorithm of user group selection for multiuser MIMO downlink transmission are provided. The use of optimal brute-force user group selection may require high computational expense. A first search operation may be based on a first user having a channel gain greater than that of other users, while a second search operation may be based on a second user having a channel gain greater than that of the remaining users. A maximized system capacity may be determined based on the maximized system capacities determined in the first and second search loop. A receiver pair associated with the maximized system capacity may be selected as the user group. The double search algorithm may reduce the computational complexity while achieving performances that may exceed the TDMA scheme and be similar to that of systems with ideal CSI at the transmitter.
摘要翻译：提供了一种用于多用户MIMO下行链路传输的用户组选择双重搜索算法的方法和系统。使用最佳暴力用户组选择可能需要较高的计算费用。第一搜索操作可以基于具有大于其他用户的信道增益的信道增益的第一用户，而第二搜索操作可以基于具有大于剩余用户的信道增益的信道增益的第二用户。可以基于在第一和第二搜索循环中确定的最大化的系统容量来确定最大化的系统容量。可以选择与最大系统容量相关联的接收机对作为用户组。双重搜索算法可以降低计算复杂度，同时实现可能超过TDMA方案的性能，并且类似于在发射机处具有理想CSI的系统的性能。

85. 发明申请

US20070064780A1 Channel quantization for multiuser diversity 失效
标题翻译：多用户分集的信道量化
公开(公告)号：US20070064780A1
公开(公告)日：2007-03-22
申请号：US11231416
申请日：2005-09-21
申请人： Jun Zheng , Chengjin Zhang , Pieter Van Rooyen
发明人： Jun Zheng , Chengjin Zhang , Pieter Van Rooyen
IPC分类号： H04L5/16 , H03D1/04
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/06 , H04B7/0626 , H04B7/0658
摘要： A method and system for channel quantization for multiuser diversity are provided. A quantizer may utilize quantization levels determined based on an objective function J that corresponds to a performance metric for a finite-rate feeback multiuser downlink communication system. The quantization levels may be obtained based on the results of maximizing the objective function J by means of an optimization algorithm. The optimization algorithm may be a multivariate optimization algorithm that may be implemented utilizing an iterative approach. The quantizer may utilize the quantization levels to quantize channel state information (CSI) to achieve multiuser diversity in the finite-rate feeback multiuser system. The performance metric may be based on signal-to-noise ratio (SNR), bit error rate (BER), and/or system capacity. The quantization levels may be utilized in a multiuser system where distributed quantization is needed for optimal selection.
摘要翻译：提供了一种用于多用户分集的信道量化的方法和系统。量化器可以利用基于与有限速率的多用户下行链路通信系统的性能度量相对应的目标函数J确定的量化级别。可以基于通过优化算法使目标函数J最大化的结果来获得量化级别。优化算法可以是可以利用迭代方法来实现的多元优化算法。量化器可以利用量化级来量化信道状态信息（CSI）以实现有限速率的多用户系统中的多用户分集。性能度量可以基于信噪比（SNR），误码率（BER）和/或系统容量。量化级别可以用于需要分布式量化来进行最优选择的多用户系统中。

86. 发明授权

US06669367B2 Optical fiber with mirror for semiconductor laser 有权
标题翻译：带有半导体激光镜的光纤
公开(公告)号：US06669367B2
公开(公告)日：2003-12-30
申请号：US09974287
申请日：2001-10-10
申请人： Chih-Hsiang Lin , Wen-Yen Hwang , Jun Zheng , Stefan J. Murry , James N. Baillargeon
发明人： Chih-Hsiang Lin , Wen-Yen Hwang , Jun Zheng , Stefan J. Murry , James N. Baillargeon
IPC分类号： G02B612
CPC分类号： H01S5/183 , G02B6/241 , G02B6/4203 , G02B6/4215 , G02B6/424 , H01S3/08059 , H01S5/02284 , H01S5/1221 , H01S5/141 , H01S5/147 , H01S5/423
摘要： A vertical-external-cavity surface-emitting laser (VECSEL) is formed by providing a monolithic portion having a first laser cavity mirror and an active region disposed on the first mirror. The cavity is completed with a second laser cavity mirror, such as a DBR, deposited onto the light-receiving end of an optical device, such as an optical fiber. The DBR-on-fiber-end is mounted with respect to the active region to complete the laser cavity and to provide automatic coupling of the output laser light into the fiber.
摘要翻译：通过提供具有第一激光腔反射镜和设置在第一反射镜上的有源区的单片部分形成垂直外腔表面发射激光器（VECSEL）。该腔完成了沉积在诸如光纤的光学装置的光接收端的第二激光腔镜（例如DBR）。相对于有源区域安装DBR光纤端，以完成激光腔并且将输出激光自动耦合到光纤中。

87. 发明申请

US20170236601A1 HOLLOW PARTICLE BEAM EMITTER 审中-公开
公开(公告)号：US20170236601A1
公开(公告)日：2017-08-17
申请号：US15584528
申请日：2017-05-02
申请人： Xian-Jun Zheng
发明人： Xian-Jun Zheng
IPC分类号： G21B1/19 , G21B3/00
CPC分类号： G21B1/19 , G21B3/006 , Y02E30/16
摘要： A particle beam emitter has a hollow particle beam tube having a first end portion, a second end portion, and a longitudinal axis. An electromagnetic system that includes a voltage supply is electrically coupled to the hollow particle beam tube and is configured to generate a primary electrical current flowing axially in the hollow particle beam tube from the first end portion towards the second end portion. A primary magnetic field associated with the primary electrical current is operable to induce a secondary electrical current in a plasma located within the hollow particle beam tube, the secondary electrical current flowing generally axially within the plasma and causing the plasma to contract inwardly towards the longitudinal axis.

88. 发明授权

US09160434B2 RF transceiver with beamforming antenna and methods for use therewith 有权
标题翻译：具有波束成形天线的RF收发器及其使用的方法
公开(公告)号：US09160434B2
公开(公告)日：2015-10-13
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： H04W16/18 , H04B7/06
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。

89. 发明授权

US08953557B2 Roaming method for a mobile terminal in WLAN, related access controller and access point device 有权
标题翻译： WLAN移动终端的漫游方法，相关的接入控制器和接入点设备
公开(公告)号：US08953557B2
公开(公告)日：2015-02-10
申请号：US13381260
申请日：2009-06-30
申请人： Jun Zheng , Chunyan Yao , Haibo Wen , Fanxiang Bin , Songwei Ma
发明人： Jun Zheng , Chunyan Yao , Haibo Wen , Fanxiang Bin , Songwei Ma
IPC分类号： H04W4/00 , H04W36/32 , H04W36/00 , H04W60/00 , H04W24/00 , H04W24/02 , H04W36/08 , H04W36/14 , H04W48/16 , H04W80/04 , H04W84/12 , H04W88/02 , H04W88/08
CPC分类号： H04W36/32 , H04W24/00 , H04W24/02 , H04W36/0033 , H04W36/08 , H04W36/14 , H04W48/16 , H04W60/00 , H04W80/04 , H04W84/12 , H04W88/02 , H04W88/08
摘要： A roaming method for a mobile terminal in a wireless local area network is disclosed. In the method, a target access point (AP) device receives an access request for roaming from the mobile terminal, and a target access controller (AC) obtains mobility information of the mobile terminal in an original extended service set based on the access request, wherein the mobility information include information of an AP device, an AC and a mobile agent server associated with the mobile terminal. Then the target AC determines whether the roaming for the mobile terminal is an inter-IP subnet roaming or an intra-IP subnet roaming based on the obtained mobility information. The target AC performs mobile IP based handover when the roaming is determined as the inter-IP subnet roaming and performs Inter Access Point Protocol based handover when the roaming is determined as the intra-IP subnet roaming.
摘要翻译：公开了一种用于无线局域网中的移动终端的漫游方法。在该方法中，目标接入点（AP）设备从移动终端接收漫游的接入请求，目标接入控制器（AC）基于接入请求，在原始的扩展业务集中获取移动终端的移动性信息，其中所述移动性信息包括与所述移动终端相关联的AP设备，AC和移动代理服务器的信息。然后，目标AC基于获得的移动性信息来确定移动终端的漫游是否是IP间子网漫游或内部IP子网漫游。当漫游被确定为IP网内漫游时，目标AC执行基于移动IP的切换，并且当漫游被确定为内部IP子网漫游时，执行基于接入点协议的切换。

90. 发明授权

US08675760B2 Method and system for selecting a user group using hybrid-quantized channel direction information feedbacks from MIMO capable mobile devices 有权
标题翻译：使用来自MIMO能力的移动设备的混合量化信道方向信息反馈来选择用户组的方法和系统
公开(公告)号：US08675760B2
公开(公告)日：2014-03-18
申请号：US12652137
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： H04B7/02
CPC分类号： H04L25/0242 , H04B7/086 , H04W16/28 , H04W24/00 , H04W24/10
摘要： A mobile device receives beams orthogonal to a single user downlink MIMO channel associated with a selected first user in a user group. The mobile device estimates relative channel direction information with respect to the received beams for an associated single user downlink MIMO channel. The estimated relative channel direction information is hybrid-quantized to generate a semi-orthogonal matrix transmitted to the base station over a finite-rate feedback link. The mobile device receives downlink data transmission according to the hybrid-quantized relative channel direction information. The base station receives multiple semi-orthogonal matrices from remaining mobile devices to generate a semi-orthogonal group for the selected first user. A mobile device having the strongest quantized projected channel capacity is selected from the generated semi-orthogonal group as a second user. Mutual channel capacity information for the selected first and second users is determined to schedule corresponding downlink data transmissions, accordingly.
摘要翻译：移动设备接收与用户组中与所选择的第一用户相关联的单个用户下行MIMO信道正交的波束。移动设备针对相关联的单用户下行MIMO信道估计相对于所接收的波束的相对信道方向信息。估计的相对信道方向信息被混合量化以产生通过有限速率反馈链路发送到基站的半正交矩阵。移动设备根据混合量化的相对信道方向信息接收下行链路数据传输。基站从剩余的移动设备接收多个半正交矩阵，以生成所选择的第一用户的半正交组。作为第二用户，从所生成的半正交组中选择具有最强量化的投影信道容量的移动设备。确定所选择的第一和第二用户的相互信道容量信息相应地调度相应的下行链路数据传输。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式