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1. 发明授权

US08515360B2 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
公开(公告)号：US08515360B2
公开(公告)日：2013-08-20
申请号：US13437635
申请日：2012-04-02
申请人： Chengjin Zhang , Jun Zheng , Pieter Van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Pieter Van Rooyen
IPC分类号： H04B1/00 , H04M1/00
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.

2. 发明授权

US08284769B2 Method and system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission 有权
标题翻译：用于多用户MIMO下行链路传输中的用户选择的范围缩减方案的方法和系统
公开(公告)号：US08284769B2
公开(公告)日：2012-10-09
申请号：US12951577
申请日：2010-11-22
申请人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
IPC分类号： H04W4/00
CPC分类号： H04B7/0452 , H04B17/382 , H04W52/42
摘要： Various aspects of a method and a system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission are presented. Aspects of a system for range reduction may comprise a range reduction processor that determines a plurality of channel measurements corresponding to a plurality of signals. The range reduction processor may compute a plurality of channel capacities based on the channel measurements corresponding to a subset of the plurality of signals having channel gain that is greater than a remaining portion of the plurality of signals. Aspects of a method may comprise determining a plurality of channel measurements corresponding to a plurality of signals, and computing a plurality of channel capacities based on said channel measurements corresponding to a subset of the plurality of signals having a channel gain that is greater than a remaining portion of the plurality of signals.
摘要翻译：提出了一种用于多用户MIMO下行链路传输中的用户选择的范围缩减方案的方法和系统的各个方面。用于范围缩小的系统的方面可以包括范围缩小处理器，其确定对应于多个信号的多个信道测量。范围缩小处理器可以基于与具有大于多个信号的剩余部分的信道增益的多个信号的子集相对应的信道测量来计算多个信道容量。方法的方面可以包括：确定对应于多个信号的多个信道测量，以及基于与多个信号的子集相对应的所述信道测量来计算多个信道容量，该信道测量具有大于剩余的信道增益的信道增益部分信号。

3. 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。

4. 发明申请

US20110103505A1 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 MULTIUSER MIMO下行链路传输的简化用户组选择方案和有限速率信道状态信息反馈的方法和系统
公开(公告)号：US20110103505A1
公开(公告)日：2011-05-05
申请号：US12917841
申请日：2010-11-02
申请人： Jun Zheng , Chengjin Zhang , Pieter van Rooyen
发明人： Jun Zheng , Chengjin Zhang , Pieter van Rooyen
IPC分类号： H04L27/28
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0626 , H04B7/0643 , H04W52/42
摘要： A method for processing signals in a communication system includes 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, based on a feedback channel gain of the second user. The selected second user may have a channel direction that is approximately orthogonal to a channel direction of the first user. System capacity may be determined based on the selecting of the first user and the selecting of the second 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 of the second user.
摘要翻译：一种用于在通信系统中处理信号的方法包括从多个用户中选择具有大于与所述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。可以基于第二用户的反馈信道增益从多个用户的剩余部分的一部分中选择至少第二用户。所选择的第二用户可以具有与第一用户的频道方向近似正交的频道方向。可以基于第一用户的选择和第二用户的选择来确定系统容量。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第二用户。

5. 发明申请

US20110070913A1 Method and System for a Range Reduction Scheme for User Selection in a Multiuser MIMO Downlink Transmission 有权
标题翻译：用于多用户MIMO下行链路传输中的用户选择的范围缩减方案的方法和系统
公开(公告)号：US20110070913A1
公开(公告)日：2011-03-24
申请号：US12951577
申请日：2010-11-22
申请人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
IPC分类号： H04W28/02
CPC分类号： H04B7/0452 , H04B17/382 , H04W52/42
摘要： Various aspects of a method and a system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission are presented. Aspects of a system for range reduction may comprise a range reduction processor that determines a plurality of channel measurements corresponding to a plurality of signals. The range reduction processor may compute a plurality of channel capacities based on the channel measurements corresponding to a subset of the plurality of signals having channel gain that is greater than a remaining portion of the plurality of signals. Aspects of a method may comprise determining a plurality of channel measurements corresponding to a plurality of signals, and computing a plurality of channel capacities based on said channel measurements corresponding to a subset of the plurality of signals having a channel gain that is greater than a remaining portion of the plurality of signals.
摘要翻译：提出了一种用于多用户MIMO下行链路传输中的用户选择的范围缩减方案的方法和系统的各个方面。用于范围缩小的系统的方面可以包括范围缩小处理器，其确定对应于多个信号的多个信道测量。范围缩小处理器可以基于与具有大于多个信号的剩余部分的信道增益的多个信号的子集相对应的信道测量来计算多个信道容量。方法的方面可以包括：确定对应于多个信号的多个信道测量，以及基于与多个信号的子集相对应的所述信道测量来计算多个信道容量，该信道测量具有大于剩余的信道增益的信道增益部分信号。

6. 发明授权

US07826416B2 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：US07826416B2
公开(公告)日：2010-11-02
申请号：US11232340
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： H04Q7/00 , H04B11/00 , H04M11/00
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。

7. 发明申请

US20100158148A1 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与FDD多用户MIMO下行链路传输与有限速率信道状态信息反馈的范围缩减
公开(公告)号：US20100158148A1
公开(公告)日：2010-06-24
申请号：US12631938
申请日：2009-12-07
申请人： Chengjin Zhang , Jun Zheng , Pieter van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Pieter van Rooyen
IPC分类号： H04K1/10
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。

8. 发明授权

US07515878B2 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：US07515878B2
公开(公告)日：2009-04-07
申请号：US11232362
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： H04B1/00 , H04M1/00
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。

9. 发明授权

US08233848B2 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：US08233848B2
公开(公告)日：2012-07-31
申请号：US13074692
申请日：2011-03-29
申请人： Chengjin Zhang , Jun Zheng , Pieter van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Pieter van Rooyen
IPC分类号： H03C7/02 , H04B1/02 , H04B7/02
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。

10. 发明授权

US08045932B2 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：US08045932B2
公开(公告)日：2011-10-25
申请号：US12631938
申请日：2009-12-07
申请人： Chengjin Zhang , Jun Zheng , Pieter van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Pieter van Rooyen
IPC分类号： 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。

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