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41. 发明申请

US20070064829A1 Method and system for a simplified user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission 有权
标题翻译：用于FDD多用户MIMO下行链路传输的有限速率信道状态信息反馈的简化用户组选择方案的方法和系统
公开(公告)号：US20070064829A1
公开(公告)日：2007-03-22
申请号：US11232340
申请日：2005-09-21
申请人： Jun Zheng , Chengjin Zhang , Pieter Rooyen
发明人： Jun Zheng , Chengjin Zhang , Pieter Rooyen
IPC分类号： H04L1/02
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0626 , H04B7/0643 , H04W52/42
摘要： Certain embodiments of the invention may be found in a method and system for a simplified user group selection scheme with finite-rate channel state information feedback for frequency division duplex (FDD) multiuser multiple-input-multiple-output (MIMO) downlink transmission. Aspects of the method may include selecting, from a plurality of users, a first user having a channel gain that is greater than a channel gain corresponding to a remaining portion of the plurality of users. At least a second user may be selected from a portion of the remaining portion of the plurality of users. The selected at least the second user has a channel direction that may be approximately orthogonal to that of the first user. The channel gain may be defined by a quantized channel gain. A quantized channel direction of the selected first user may be determined for the selecting the at least the second user.
摘要翻译：可以在用于频分双工（FDD）多用户多输入多输出（MIMO）下行链路传输的有限速率信道状态信息反馈的简化用户组选择方案的方法和系统中找到本发明的某些实施例。该方法的方面可以包括从多个用户中选择具有大于与多个用户的剩余部分相对应的信道增益的信道增益的第一用户。可以从多个用户的剩余部分的一部分中选择至少第二用户。所选择的至少第二用户具有可以与第一用户的频道方向近似正交的频道方向。信道增益可以由量化的信道增益来定义。可以确定所选择的第一用户的量化信道方向用于选择至少第二用户。

42. 发明申请

US20070066331A1 Method and system for a double search user group selection scheme with range reduction in TDD multiuser MIMO downlink transmission 有权
标题翻译：用于TDD多用户MIMO下行链路传输的范围缩减的双重搜索用户组选择方案的方法和系统
公开(公告)号：US20070066331A1
公开(公告)日：2007-03-22
申请号：US11231586
申请日：2005-09-21
申请人： Jun Zheng , Chengjin Zhang , Pieter Rooyen
发明人： Jun Zheng , Chengjin Zhang , Pieter Rooyen
IPC分类号： H04B7/00 , H04Q7/20
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。

43. 发明申请

US20070066238A1 Double search user group selection scheme with range reduction for FDD multiuser MIMO downlink transmission with finite-rate channel state information feedback 有权
标题翻译：双重搜索用户组选择方案，采用有限速率信道状态信息反馈的FDD多用户MIMO下行传输范围缩小
公开(公告)号：US20070066238A1
公开(公告)日：2007-03-22
申请号：US11232369
申请日：2005-09-21
申请人： Chengjin Zhang , Jun Zheng , Pieter Rooyen
发明人： Chengjin Zhang , Jun Zheng , Pieter Rooyen
IPC分类号： H04B7/00 , H04B1/00
CPC分类号： H04B7/0626 , H04B7/0408 , H04B7/0452 , H04B7/0617
摘要： Aspects of a double search user group selection scheme with range reduction for FDD multiuser MIMO downlink transmission with finite-rate channel state information feedback are provided. The method may comprise maximizing system capacity using feedback information for a plurality of signals in a frequency division duplex system to reduce a search range within which a group of signals having maximum channel gain are located. The feedback information may comprise quantized gain for the signals. Quantized channel direction for the signals within the reduced search range may be requested and received by the transmitter. One or two signals from the reduced search range that maximizes system capacity may be selected. The receivers associated with these signals may then be selected as the user group.
摘要翻译：提供了具有有限速率信道状态信息反馈的FDD多用户MIMO下行链路传输的范围缩小的双重搜索用户组选择方案。该方法可以包括使用频分双工系统中的多个信号的反馈信息来最大化系统容量，以减少具有最大信道增益的一组信号所在的搜索范围。反馈信息可以包括信号的量化增益。减少的搜索范围内的信号的量化信道方向可以由发射机请求和接收。可以选择使系统容量最大化的缩小搜索范围的一个或两个信号。然后可以选择与这些信号相关联的接收机作为用户组。

44. 发明申请

US20070066237A1 Method and system for greedy user group selection with range reduction for FDD multiuser MIMO downlink transmission 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FDD多用户MIMO下行传输的范围缩减的贪心用户组选择的方法和系统
公开(公告)号：US20070066237A1
公开(公告)日：2007-03-22
申请号：US11232362
申请日：2005-09-21
申请人： Chengjin Zhang , Jun Zheng , Pieter Rooyen
发明人： Chengjin Zhang , Jun Zheng , Pieter Rooyen
IPC分类号： H04B7/00 , H04B1/00
CPC分类号： H04B7/0452 , H04B7/0626 , H04B7/0643 , H04L1/0625 , H04L1/0693 , H04L5/14 , H04L25/0204 , H04L25/0228 , H04L25/03343 , H04L2025/03426 , H04L2025/03802
摘要： Aspects of a greedy search user group selection scheme with range reduction for FDD multiuser MIMO downlink transmission with finite-rate channel state information feedback are provided. The method may comprise receiving feedback information via a communication channel for a plurality of users in a frequency division duplex system. The system capacity may be maximized using the feedback information based on a signal from a single user within a reduced search range or based on the signal from the single user and at least one other signal from another user within a remaining portion of the search range. The feedback information may comprise quantized gain and/or direction of the channel state information of the users.
摘要翻译：提供了具有有限速率信道状态信息反馈的FDD多用户MIMO下行链路传输的范围缩小的贪婪搜索用户组选择方案。该方法可以包括经由频分双工系统中的多个用户的通信信道接收反馈信息。可以使用基于在缩小搜索范围内来自单个用户的信号的反馈信息或者基于来自单个用户的信号以及在搜索范围的剩余部分内的来自另一用户的至少一个其他信号来使系统容量最大化。反馈信息可以包括用户的信道状态信息的量化增益和/或方向。

45. 发明授权

US08260229B2 I-Q mismatch compensation 失效
标题翻译： I-Q不匹配补偿
公开(公告)号：US08260229B2
公开(公告)日：2012-09-04
申请号：US12468995
申请日：2009-05-20
申请人： Mariam Motamed , Daniel F. Filipovic , Christos Komninakis , Chun-Hao Hsu , Chengjin Zhang
发明人： Mariam Motamed , Daniel F. Filipovic , Christos Komninakis , Chun-Hao Hsu , Chengjin Zhang
IPC分类号： H04B17/02
CPC分类号： H03D3/009
摘要： Techniques for compensating for I-Q mismatch in a communications receiver. In an exemplary embodiment, incoming I and Q samples are adjusted by multiplying with certain compensation coefficients to generate mismatch-compensated I and Q samples. The compensation coefficients may themselves be calculated and iteratively refined from the mismatch-compensated I and Q samples. Further techniques for partitioning the adjustment and estimation functions among computational hardware are disclosed. In an exemplary embodiment, estimation may be restricted to only those segments of the incoming I and Q samples that fulfill certain conditions, e.g., segments of the incoming I and Q samples known to be statistically uncorrelated and/or to have equal average energy.
摘要翻译：用于补偿通信接收机中的I-Q不匹配的技术。在示例性实施例中，通过与某些补偿系数相乘来调整输入I和Q样本，以产生失配补偿的I和Q样本。补偿系数本身可以从不匹配补偿的I和Q样本中计算和迭代地改进。公开了用于在计算硬件之间划分调整和估计功能的其它技术。在示例性实施例中，估计可以仅限于满足某些条件的输入I和Q样本的那些段，例如已知在统计学上不相关和/或具有相等平均能量的输入I和Q样本的段。

46. 发明授权

US09197296B2 Method and apparatus for maximum ratio transmission mobile transmit diversity system 有权
标题翻译：用于最大比率传输移动发射分集系统的方法和装置
公开(公告)号：US09197296B2
公开(公告)日：2015-11-24
申请号：US12950043
申请日：2010-11-19
申请人： Daniel F. Filipovic , Chengjin Zhang
发明人： Daniel F. Filipovic , Chengjin Zhang
IPC分类号： H04B7/00 , H04B7/04 , H04B7/06
CPC分类号： H04B7/0443 , H04B7/0617
摘要： A method and apparatus for providing maximum ratio transmission mobile transmit diversity is provided. The method may include selecting a first transmit power for a first antenna and a second transmit power for a second antenna, wherein the first and second transmit powers are selected to generate a target power output, and using a first average power tracking unit to generate the first selected transmit power and a second average power tracking unit to generate the second selected transmit power.
摘要翻译：提供了一种用于提供最大比率传输移动发射分集的方法和装置。该方法可以包括为第一天线选择第一发射功率和第二天线的第二发射功率，其中选择第一和第二发射功率以产生目标功率输出，并且使用第一平均功率跟踪单元来产生第一选择的发射功率和第二平均功率跟踪单元以产生第二选择的发射功率。

47. 发明申请

US20110244912A1 METHOD AND APPARATUS FOR MAXIMUM RATIO TRANSMISSION MOBILE TRANSMIT DIVERSITY SYSTEM 有权
标题翻译：用于最大比例传输移动传输多样性系统的方法和装置
公开(公告)号：US20110244912A1
公开(公告)日：2011-10-06
申请号：US12950043
申请日：2010-11-19
申请人： Daniel F. Filipovic , Chengjin Zhang
发明人： Daniel F. Filipovic , Chengjin Zhang
IPC分类号： H04B7/00
CPC分类号： H04B7/0443 , H04B7/0617
摘要： A method and apparatus for providing maximum ratio transmission mobile transmit diversity is provided. The method may include selecting a first transmit power for a first antenna and a second transmit power for a second antenna, wherein the first and second transmit powers are selected to generate a target power output, and using a first average power tracking unit to generate the first selected transmit power and a second average power tracking unit to generate the second selected transmit power.
摘要翻译：提供了一种用于提供最大比率传输移动发射分集的方法和装置。该方法可以包括为第一天线选择第一发射功率和第二天线的第二发射功率，其中选择第一和第二发射功率以产生目标功率输出，并且使用第一平均功率跟踪单元来产生第一选择的发射功率和第二平均功率跟踪单元以产生第二选择的发射功率。

48. 发明授权

US08891387B2 UE based conditional enabling of ULTD 有权
标题翻译：基于UE的基于ULTD的条件启用
公开(公告)号：US08891387B2
公开(公告)日：2014-11-18
申请号：US13098231
申请日：2011-04-29
申请人： Bibhu Prasad Mohanty , Sharad Deepak Sambhwani , Chengjin Zhang , Daniel F. Filipovic , Ravi Agarwal , Jilei Hou , Rohit Kapoor
发明人： Bibhu Prasad Mohanty , Sharad Deepak Sambhwani , Chengjin Zhang , Daniel F. Filipovic , Ravi Agarwal , Jilei Hou , Rohit Kapoor
IPC分类号： H04W4/00 , H04W24/00 , H04B7/06
CPC分类号： H04B7/0689 , H04B7/0602 , H04B7/0617
摘要： In a communication system, user equipment (UE) conditionally performs uplink transmit diversity (ULTD) either by Switched Antenna Transmit Diversity (SATD) or Beamforming Transmit Diversity (BFTD) using a first antenna and a second antenna. Either a serving node or the UE determines that uplink transmit diversity is conditionally authorized. Either a serving node or the UE measures a value. The UE transmits using ULTD in response to determining that an enabling condition based on the value is satisfied. The UE can also disable uplink transmit diversity in response to determining that a disabling condition based on the value is satisfied. The disabling condition comprises a disabling threshold that equals the enabling condition comprising an enabling threshold with a threshold adjustment for hysteresis.
摘要翻译：在通信系统中，用户设备（UE）通过使用第一天线和第二天线的交换天线发射分集（SATD）或波束形成发射分集（BFTD）有条件地执行上行链路发射分集（ULTD）。服务节点或UE确定上行链路传输分集有条件地被授权。服务节点或UE测量值。响应于确定基于该值的使能条件得以满足，UE使用ULTD进行发送。响应于确定基于该值的禁用条件被满足，UE还可以禁用上行链路发射分集。禁用条件包括等于启用条件的禁用阈值，该允许条件包括具有用于滞后的阈值调整的启用阈值。

49. 发明申请

US20110286347A1 UE Based Conditional Enabling of ULTD 有权
标题翻译：基于UE的基于条件启用ULTD
公开(公告)号：US20110286347A1
公开(公告)日：2011-11-24
申请号：US13098231
申请日：2011-04-29
申请人： Bibhu Prasad Mohanty , Sharad Deepak Sambhwani , Chengjin Zhang , Daniel F. Filipovic , Ravi Agarwal , Jilei Hou , Rohit Kapoor
发明人： Bibhu Prasad Mohanty , Sharad Deepak Sambhwani , Chengjin Zhang , Daniel F. Filipovic , Ravi Agarwal , Jilei Hou , Rohit Kapoor
IPC分类号： H04W24/00
CPC分类号： H04B7/0689 , H04B7/0602 , H04B7/0617
摘要： In a communication system, user equipment (UE) conditionally performs uplink transmit diversity (ULTD) either by Switched Antenna Transmit Diversity (SATD) or Beamforming Transmit Diversity (BFTD) using a first antenna and a second antenna. Either a serving node or the UE determines that uplink transmit diversity is conditionally authorized. Either a serving node or the UE measures a value. The UE transmits using ULTD in response to determining that an enabling condition based on the value is satisfied. The UE can also disable uplink transmit diversity in response to determining that a disabling condition based on the value is satisfied. The disabling condition comprises a disabling threshold that equals the enabling condition comprising an enabling threshold with a threshold adjustment for hysteresis.
摘要翻译：在通信系统中，用户设备（UE）通过使用第一天线和第二天线的交换天线发射分集（SATD）或波束形成发射分集（BFTD）有条件地执行上行链路发射分集（ULTD）。服务节点或UE确定上行链路传输分集有条件地被授权。服务节点或UE测量值。响应于确定基于该值的使能条件得以满足，UE使用ULTD进行发送。响应于确定基于该值的禁用条件被满足，UE还可以禁用上行链路发射分集。禁用条件包括等于启用条件的禁用阈值，该允许条件包括具有用于滞后的阈值调整的启用阈值。

50. 发明授权

US08918062B2 Combined intelligent receive diversity (IRD) and mobile transmit diversity (MTD) with independent antenna switching for uplink and downlink 有权
标题翻译：组合智能接收分集（IRD）和移动发射分集（MTD），具有上行链路和下行链路的独立天线切换
公开(公告)号：US08918062B2
公开(公告)日：2014-12-23
申请号：US12962513
申请日：2010-12-07
申请人： Christos Komninakis , Daniel F. Filipovic , Chengjin Zhang
发明人： Christos Komninakis , Daniel F. Filipovic , Chengjin Zhang
IPC分类号： H04B1/44 , H04B7/08 , H04B7/06
CPC分类号： H04B7/0691 , H04B7/0602 , H04B7/0608 , H04B7/0814 , H04B7/082 , H04B7/0831 , H04B7/0874 , H04B7/0888
摘要： Methods and apparatus are provided for allowing a transmitter (Tx) to perform antenna selection independently of a receiver (Rx) in a transceiver supporting both transmit diversity and receive diversity. Certain aspects may utilize a cross switch, which may be used in a parallel or cross configuration, to provide for the independent antenna selection, such that the Rx may maintain the ability to operate on the same antenna as the Tx, on another antenna, or on both antennas for enhanced receive diversity. Furthermore, certain aspects may employ additional switching in the baseband domain in an effort to avoid, or at least reduce, switching glitches in the Rx caused by changing the cross switch configuration. In this manner, the Rx need not re-converge upon antenna switching.
摘要翻译：提供了允许发射机（Tx）独立于支持发射分集和接收分集的收发机中的接收机（Rx）执行天线选择的方法和装置。某些方面可以利用可以以并行或交叉配置使用的交叉开关来提供独立天线选择，使得Rx可以保持在与另一天线上在Tx相同的天线上操作的能力，或者在两个天线上增强接收分集。此外，某些方面可以在基带域中采用额外的切换，以努力避免或至少减少通过改变交叉交换机配置导致的Rx中的切换毛刺。以这种方式，Rx不需要在天线切换时重新收敛。

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