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11. 发明授权

US08199846B2 Generalized reference signaling scheme for multi-user, multiple input, multiple output (MU-MIMO) using arbitrarily precoded reference signals 有权
标题翻译：广泛参考信令方案，用于多用户，多输入，多输出（MU-MIMO）使用任意预编码的参考信号
公开(公告)号：US08199846B2
公开(公告)日：2012-06-12
申请号：US12897417
申请日：2010-10-04
申请人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
发明人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
IPC分类号： H04B7/02
CPC分类号： H04B7/0456 , H04B7/0413 , H04B7/0665 , H04L25/03343 , H04L2025/03426 , H04W48/16
摘要： A multi-user multiple-input multiple-output (MU-MIMO) downlink beamforming system (200) is provided to enable transmit beamforming vectors to be efficiently provided to a subset of user equipment devices (201.i), where spatial separation or zero-forcing transmit beamformers (wi) are computed at the base station (210) and used to generate precoded reference signals (216). The precoded reference signals (216) are fed forward to the user equipment devices (201.i) which apply one or more hypothesis tests (207.i, 208.i) to the precoded reference signals to extract the precoding matrix (W), including the specific transmit beamforming vector (WUE) designed for the user equipment, and this extracted information is used to generate receive beamformers (vi).
摘要翻译：提供多用户多输入多输出（MU-MIMO）下行链路波束形成系统（200）以使发送波束成形向量能够有效地提供给用户设备设备（201.i）的子集，其中空间分离或零在基站（210）处计算强制发射波束形成器（wi）并用于产生预编码的参考信号（216）。预编码的参考信号（216）被馈送到用户设备设备（201.i），其将一个或多个假设测试（207.i，208.i）应用于预编码的参考信号以提取预编码矩阵（W）包括为用户设备设计的特定发射波束形成向量（WUE），并且该提取的信息用于生成接收波束形成器（vi）。

12. 发明申请

US20120114064A1 Reference Signaling Scheme Using Compressed Feedforward Codebooks for MU-MIMO Systems 有权
标题翻译：使用压缩前馈码本的MU-MIMO系统的参考信令方案
公开(公告)号：US20120114064A1
公开(公告)日：2012-05-10
申请号：US13100738
申请日：2011-05-04
申请人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
发明人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
IPC分类号： H04L27/00
CPC分类号： H04B7/0456 , H04B7/0417 , H04B7/0421 , H04B7/0452 , H04B7/0639
摘要： A multi-user MIMO downlink beamforming system with limited feed forward (200) is provided to enable precoding matrix information to be efficiently provided to a subset of user equipment devices (201.i), where zero-forcing transmit beamformers (wi) are computed at the base station (210) and assembled into a precoding matrix (W). The precoding matrix is encoded using a compact reference signal codebook (225, 207.i) for forward link signaling, either by sending bits indicating the index of the transmission matrix used, or by transmitting one or more precoded pilots or reference signals wherein the pilot signals are precoded using vectors uniquely representative of the transmission matrix used which includes candidate reference signal matrices which meet a predetermined condition number requirement, such as a condition number threshold. The precoding matrix information (227) is extracted at the user equipment devices (201.i) using the compact reference signal codebook (207.i) and used by the MMSE receiver (209.i) to generate receive beamformers (vi).
摘要翻译：提供了具有有限的前馈（200）的多用户MIMO下行链路波束成形系统，以使预编码矩阵信息能够有效地提供给用户设备设备（201.i）的子集，其中计算迫零发射波束形成器（wi）在基站（210）处并组装成预编码矩阵（W）。预编码矩阵使用用于前向链路信令的紧凑参考信号码本（225,207.i）进行编码，通过发送指示所使用的传输矩阵的索引的比特，或者通过发送一个或多个预编码的导频或参考信号，其中导频使用唯一地代表所使用的传输矩阵的矢量来对信号进行预编码，该传输矩阵包括符合预定条件数量要求的候选参考信号矩阵，例如条件数阈值。使用紧凑参考信号码本（207.i）在用户设备设备（201.i）处提取预编码矩阵信息（227），并由MMSE接收机（209.i）使用以生成接收波束形成器（vi）。

13. 发明授权

US08020075B2 Channel quality index feedback reduction for broadband systems 有权
标题翻译：宽带系统的频道质量指标反馈减少
公开(公告)号：US08020075B2
公开(公告)日：2011-09-13
申请号：US11687376
申请日：2007-03-16
申请人： Jayesh H. Kotecha
发明人： Jayesh H. Kotecha
IPC分类号： H03M13/00
CPC分类号： H04B7/0456 , H04L1/0029 , H04L5/0057 , H04L43/00 , H04L43/16 , H04W24/00 , H04W28/06 , H04W72/0406 , H04W72/0466
摘要： A system and methodology are disclosed for exploiting channel correlation in time and/or frequency to reduce CQI feedback in wireless communications systems. By compressing CQI feedback at the receiver to reduce redundancy in CQI feedback information that results from the channel correlation, the average feedback rate is reduced. In various embodiments, redundancy in time may be removed from the CQI feedback by monitoring variations of the CQI information in time at the receiver so that CQI information for a given CQI reporting instance is communicated to the transmitter only if it differs from the CQI information for the previous CQI reporting instance. Otherwise, no feedback is performed. In other embodiments, CQI feedback is compressed by performing a discrete cosine transform (DCT) on the CQI data. The compressed CQI feedback information is then communicated to the transmitter through the feedback control channel where it is decoded into the original CQI information and used to generate signal processing information for various sub-carriers.
摘要翻译：公开了一种用于在时间和/或频率上利用信道相关性以减少无线通信系统中的CQI反馈的系统和方法。通过在接收机处压缩CQI反馈以减少由信道相关产生的CQI反馈信息中的冗余，平均反馈速率降低。在各种实施例中，可以通过在接收机处及时监视CQI信息的变化来从CQI反馈中消除时间冗余，使得仅当CQI信息与CQI信息不同时才将CQI给定的CQI报告实例传送给发送器以前的CQI报告实例。否则，不执行任何反馈。在其他实施例中，通过对CQI数据执行离散余弦变换（DCT）来压缩CQI反馈。压缩的CQI反馈信息然后通过反馈控制信道传送到发射机，在该反馈控制信道中，它被解码为原始的CQI信息，并用于生成各种子载波的信号处理信息。

14. 发明申请

US20110019631A1 Generalized Reference Signaling Scheme for MU-MIMO Using Arbitrarily Precoded Reference Signals 有权
标题翻译：使用任意预编码参考信号的MU-MIMO的广义参考信令方案
公开(公告)号：US20110019631A1
公开(公告)日：2011-01-27
申请号：US12897417
申请日：2010-10-04
申请人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
发明人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
IPC分类号： H04W4/00
CPC分类号： H04B7/0456 , H04B7/0413 , H04B7/0665 , H04L25/03343 , H04L2025/03426 , H04W48/16
摘要： A multi-user MIMO downlink beamforming system (200) is provided to enable transmit beamforming vectors to be efficiently provided to a subset of user equipment devices (201.i), where spatial separation or zero-forcing transmit beamformers (wi) are computed at the base station (210) and used to generate precoded reference signals (216). The precoded reference signals (216) are fed forward to the user equipment devices (201.i) which apply one or more hypothesis tests (207.i, 208.i) to the precoded reference signals to extract the precoding matrix (W), including the specific transmit beamforming vector (wUE) designed for the user equipment, and this extracted information is used to generate receive beamformers (vi).
摘要翻译：多用户MIMO下行链路波束形成系统（200）被提供以使发射波束成形向量能够有效地提供给用户设备设备（201.i）的子集，其中空间分离或迫零发射波束形成器（wi）基站（210）并用于产生预编码的参考信号（216）。预编码的参考信号（216）被馈送到用户设备设备（201.i），其将一个或多个假设测试（207.i，208.i）应用于预编码的参考信号以提取预编码矩阵（W）包括为用户设备设计的特定发射波束形成向量（wUE），并且该提取的信息用于生成接收波束形成器（vi）。

15. 发明授权

US07813455B2 Decoding MIMO space time code symbol-pairs 有权
标题翻译：解码MIMO空间时间码符号对
公开(公告)号：US07813455B2
公开(公告)日：2010-10-12
申请号：US11562557
申请日：2006-11-22
申请人： Jayesh H. Kotecha
发明人： Jayesh H. Kotecha
IPC分类号： H04L27/06
CPC分类号： H04L1/0631 , H04L25/0242 , H04L25/03006 , H04L25/067 , H04L2025/03401 , H04L2025/03426
摘要： A MIMO wireless communication system and method reduces the number of recursive operations when decoding received data symbols by decoding the data symbols in pairs rather than on a per symbol basis. Decoding in pairs is facilitated by the determination that errors between selected pairs of data symbols are uncorrelated and identically distributed with a determined variance. Additionally, the system and method can order the pairs and provide decoding rules that result in an insignificant loss of performance for a wide range of signal-to-noise ratios (SNRs). Furthermore, the system and method exploit the structure of the error covariance matrix to reduce computational demands.
摘要翻译： MIMO无线通信系统和方法通过对数据符号进行解码来减少对接收到的数据符号进行解码而不是以每个符号为基础的递归操作的数量。通过确定所选择的数据符号对之间的错误是不相关的并以确定的方差相同地分布来促成成对解码。此外，该系统和方法可以对对进行排序并提供解码规则，从而导致宽范围的信噪比（SNR）的性能损失不大。此外，系统和方法利用误差协方差矩阵的结构来减少计算需求。

16. 发明申请

US20090046788A1 Techniques for Reducing Precoding Overhead in a Multiple-Input Multiple-Output Wireless Communication System 有权
标题翻译：在多输入多输出无线通信系统中降低预编码开销的技术
公开(公告)号：US20090046788A1
公开(公告)日：2009-02-19
申请号：US11838029
申请日：2007-08-13
申请人： Jayesh H. Kotecha
发明人： Jayesh H. Kotecha
IPC分类号： H04L27/28
CPC分类号： H04B7/0617 , H04B7/0417 , H04B7/0626 , H04B7/0639 , H04B7/0656 , H04B7/0663
摘要： A technique of operating a wireless communication device in a multiple-input multiple-output wireless communication system includes receiving, at a first wireless communication device, recommended precoder information from a second wireless communication device, which is associated with a recommended precoder. A precoded signal is then formed at the first wireless communication device based on the recommended precoder or an alternate precoder. The first wireless communication device, which is configured to not provide an indication of whether the recommended precoder or the alternate precoder was utilized to form the precoded signal, then transmits the precoded signal.
摘要翻译：在多输入多输出无线通信系统中操作无线通信设备的技术包括在第一无线通信设备处接收与推荐预编码器相关联的来自第二无线通信设备的推荐预编码器信息。然后，基于推荐的预编码器或备用预编码器，在第一无线通信设备处形成预编码信号。被配置为不提供推荐的预编码器或备用预编码器是否被用于形成预编码信号的指示的第一无线通信装置然后发送预编码的信号。

17. 发明申请

US20080227495A1 Reference signaling scheme using compressed feedforward codebooks for MU-MIMO systems 有权
标题翻译：使用MU-MIMO系统的压缩前馈码本的参考信令方案
公开(公告)号：US20080227495A1
公开(公告)日：2008-09-18
申请号：US11687441
申请日：2007-03-16
申请人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
发明人： Jayesh H. Kotecha , Jayakrishnan C. Mundarath
IPC分类号： H04M1/00 , G06F17/00
CPC分类号： H04B7/0456 , H04B7/0417 , H04B7/0421 , H04B7/0452 , H04B7/0639
摘要： A multi-user MIMO downlink beamforming system with limited feed forward (200) is provided to enable preceding matrix information to be efficiently provided to a subset of user equipment devices (201.i), where zero-forcing transmit beamformers (wi) are computed at the base station (210) and assembled into a precoding matrix (W). The precoding matrix is encoded using a compact reference signal codebook (225, 207.i) for forward link signaling, either by sending bits indicating the index of the transmission matrix used, or by transmitting one or more precoded pilots or reference signals wherein the pilot signals are precoded using vectors uniquely representative of the transmission matrix used which includes candidate reference signal matrices which meet a predetermined condition number requirement, such as a condition number threshold. The preceding matrix information (227) is extracted at the user equipment devices (201.i) using the compact reference signal codebook (207.i) and used by the MMSE receiver (209.i) to generate receive beamformers (vi).
摘要翻译：提供了具有有限的前馈（200）的多用户MIMO下行链路波束成形系统，以便能够将先前的矩阵信息有效地提供给用户设备设备（201.i）的子集，其中迫零发射波束形成器（w> i）在基站（210）处计算并组装成预编码矩阵（W）。通过发送指示所使用的传输矩阵的索引的比特，或者通过发送一个或多个预编码的导频或参考信号，使用用于前向链路信令的紧凑参考信号码本（225,207.i）来对预编码矩阵进行编码，使用唯一地代表所使用的传输矩阵的矢量来对信号进行预编码，该传输矩阵包括符合预定条件数量要求的候选参考信号矩阵，例如条件数阈值。使用紧凑参考信号码本（207.i）在用户设备设备（201.i）处提取前面的矩阵信息（227），并由MMSE接收机（209）i使用以产生接收波束形成器（v）我）。

18. 发明申请

US20080080632A1 Method and device for operating a precoded MIMO system 有权
标题翻译：用于操作预编码MIMO系统的方法和装置
公开(公告)号：US20080080632A1
公开(公告)日：2008-04-03
申请号：US11529311
申请日：2006-09-29
申请人： Taeyoon Kim , Jayesh H. Kotecha
发明人： Taeyoon Kim , Jayesh H. Kotecha
IPC分类号： H04L1/02
CPC分类号： H04B7/0465 , H04B1/109 , H04B1/123 , H04B7/002 , H04L1/06 , H04L1/0687 , H04L25/0204
摘要： A method is provided for generating precoder data (600), comprising: obtaining transmit power data indicative of a transmit power of a plurality of multiple-input/multiple-output signals (610); obtaining signal quality data, the signal quality data including at least one measure of a quality of the plurality of multiple-input/multiple-output signals (620, 630); obtaining channel data with respect to a wireless channel, the channel data including a measure of respective channel parameters of each of a plurality of channel paths in the wireless channel (620, 630); constraining one or more system performance parameters (640); and determining first and second precoder diagonal values (wA and wB) based on the signal quality data, the transmit power data, the channel data, and the one or more constrained system performance parameters (650).
摘要翻译：提供了一种用于生成预编码器数据（600）的方法，包括：获得指示多个多输入/多输出信号（610）的发射功率的发射功率数据; 获得信号质量数据，所述信号质量数据包括所述多个多输入/多输出信号（620,630）的质量的至少一个度量; 获得关于无线信道的信道数据，所述信道数据包括所述无线信道（620,630）中的多个信道路径中的每一个的相应信道参数的度量; 约束一个或多个系统性能参数（640）; 以及基于所述信号质量数据，所述发射功率数据，所述信道数据以及所述一个或多个信道数据来确定第一和第二预编码器对角线值（w A A和W B B）受限系统性能参数（650）。

19. 发明授权

US08724556B2 Uplink control channel allocation in a communication system and communicating the allocation 有权
标题翻译：通信系统中的上行链路控制信道分配和通信分配
公开(公告)号：US08724556B2
公开(公告)日：2014-05-13
申请号：US11725422
申请日：2007-03-19
申请人： James W. McCoy , Leo G. Dehner , Jayesh H. Kotecha , Jayakrishnan C. Mundarath
发明人： James W. McCoy , Leo G. Dehner , Jayesh H. Kotecha , Jayakrishnan C. Mundarath
IPC分类号： H04W4/00
CPC分类号： H04W72/0413 , H04L1/0003 , H04L5/0055 , H04W28/26 , H04W72/04 , H04W72/1263 , H04W72/1284 , H04W72/14
摘要： Various methods of allocating uplink control channels in a communication system are implemented at a resource scheduler or a user equipment (UE). In one method the scheduler reserves resources for a downlink data channel and signals a corresponding downlink data channel grant and also reserves resources for a persistent uplink control channel for a longer duration than the data channel grant. Signaling overhead associated with a grant for this persistent uplink control channel is reduced over a full dynamic grant. A predetermined rule can be used at the scheduler and at the UE to avoid overhead signaling associated with a grant for this persistent control channel. Predetermined rules at the UE and scheduler can also be used to reserve appropriate resources and select appropriate MCS levels for control information and the control information and uplink data can be transported over a common uplink channel when a time overlap occurs between an uplink data channel and the persistent control channel.
摘要翻译：在资源调度器或用户设备（UE）中实现在通信系统中分配上行链路控制信道的各种方法。在一种方法中，调度器为下行链路数据信道预留资源，并向相应的下行链路数据信道授权发送信号，并为持续上行链路控制信道预留比数据信道授权更长的持续时间的资源。与该持久上行链路控制信道的授权相关联的信令开销通过完全动态授权而减少。可以在调度器和UE处使用预定规则来避免与该持久控制信道的授权相关联的开销信令。 UE和调度器上的预定规则也可以用于保留适当的资源，并为控制信息选择适当的MCS级别，并且当在上行链路数据信道与上行链路数据信道之间发生时间重叠时，控制信息和上行链路数据可以通过公共上行链路信道传输持续控制通道。

20. 发明授权

US08547986B2 System and method for resource block-specific control signaling 有权
标题翻译：资源块特定控制信令的系统和方法
公开(公告)号：US08547986B2
公开(公告)日：2013-10-01
申请号：US11742204
申请日：2007-04-30
申请人： Jayesh H. Kotecha
发明人： Jayesh H. Kotecha
IPC分类号： H04J3/26
CPC分类号： H04W72/0406 , H04B7/0417 , H04L5/0007 , H04L5/0037 , H04L5/0094 , H04L27/2601
摘要： A system and method is disclosed for resource block-specific control signaling in a communication system. Communication data is transmitted using a transmission channel comprising a plurality of resource blocks defined by allocating time-frequency slots in a transmission resource. Resource block control information is transmitted in a “feed-forward” manner to a user end (UE) or group of UEs using channels physically mapped into scheduled resource blocks (RBs) for that user or group of users. Embodiments of the invention provide an RB-specific control channel that comprises RB control elements that are embedded within scheduled resource blocks. The invention, therefore, reduces the amount of control information that must be transmitted by common or shared control channels.
摘要翻译：公开了一种用于通信系统中的资源块特定控制信令的系统和方法。使用包括通过分配传输资源中的时间 - 时隙定义的多个资源块的传输信道来发送通信数据。资源块控制信息以“前馈”方式发送到用户端（UE）或使用物理地映射到用户或用户组的调度资源块（RB）的信道的UE组。本发明的实施例提供了一种RB特定控制信道，其包括被嵌入在调度的资源块内的RB控制元素。因此，本发明减少必须由公共或共享的控制信道发送的控制信息的数量。

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