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1.发明授权Method and apparatus for providing efficient precoding feedback in a MIMO wireless communication system 有权在MIMO无线通信系统中提供有效的预编码反馈的方法和装置公开(公告)号：US07881247B2
公开(公告)日：2011-02-01
申请号：US11840328
申请日：2007-08-17
CPC分类号： H04B7/0663 , H04B7/0417 , H04B7/0634 , H04B7/0639 , H04B7/0641 , H04B7/066 , H04L1/0687
摘要： A multiple-input multiple-output (MIMO) scheme uses precoding and feedback in a wireless communication system including a transmitter and a receiver. The system may use either a single codeword (SCW) or a double codeword (DCW). The precoding scheme is based on transmit beamforming (TxBF). Combined differential and non-differential feedback with periodic resetting is considered.
摘要翻译： 多输入多输出（MIMO）方案在包括发射机和接收机的无线通信系统中使用预编码和反馈。 系统可以使用单个码字（SCW）或双码字（DCW）。 预编码方案基于发射波束成形（TxBF）。 考虑了具有周期性复位的组合差分和非差分反馈。
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2.发明申请METHOD, APPARATUS AND SYSTEM FOR IMPLEMENTING MULTI-USER VIRTUAL MULTIPLE-INPUT MULTIPLE-OUTPUT 有权用于实现多用户虚拟多路输入多输出的方法，装置和系统公开(公告)号：US20080032746A1
公开(公告)日：2008-02-07
申请号：US11834923
申请日：2007-08-07
IPC分类号： H04Q7/20
CPC分类号： H04B7/0452 , H04B7/0617 , H04B7/0669 , H04B7/0671
摘要： A method and system for implementing multi-user virtual multiple-input multiple-output (MIMO) techniques for wireless transmit/receive units (WTRUs) having one or more antennas are disclosed. The system includes a base station and at least one WTRU having at least two antennas. The number of antennas of the base station is not less than the number of antennas of any of the WTRUs. The base station generates a channel matrix for the WTRUs and processes received signals from the WTRUs based on a measurement of the channel matrix. The WTRUs may perform transmit precoding or eigen-beamforming using the channel matrix information. The WTRUs may also perform transmit diversity.
摘要翻译： 公开了一种用于实现具有一个或多个天线的无线发射/接收单元（WTRU）的多用户虚拟多输入多输出（MIMO）技术的方法和系统。 该系统包括基站和至少一个具有至少两个天线的WTRU。 基站的天线数量不小于任何WTRU的天线数量。 基站为WTRU生成信道矩阵，并基于信道矩阵的测量来处理来自WTRU的接收信号。 WTRU可以使用信道矩阵信息来执行发送预编码或特征波束成形。 WTRU还可以执行发射分集。
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3.发明申请METHOD AND APPARATUS FOR REDUCING A PEAK-TO-AVERAGE POWER RATIO IN A MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM 审中-公开用于减少多输入多输出系统中的峰值平均功率比的方法和装置公开(公告)号：US20080260054A1
公开(公告)日：2008-10-23
申请号：US11839773
申请日：2007-08-16
IPC分类号： H04L27/28
CPC分类号： H04L27/2614 , H04B7/0639 , H04B7/066 , H04L25/0204 , H04L27/2623 , H04L27/2624
摘要： A method and apparatus for reducing a peak-to-average power ratio (PAPR) in a multiple-input multiple-output (MIMO) wireless communication system are disclosed. Transmit beamforming or precoding is performed on transmit symbols based on a channel matrix. For feedback, channel matrices may be averaged over multiple subcarriers and the averaged channel matrices may be further quantized. In order to reduce the PAPR, amplitude clipping may be performed on the symbols after the transmit processing. The amplitude clipping may be performed by hard clipping, soft clipping, or smooth clipping.
摘要翻译： 公开了一种减少多输入多输出（MIMO）无线通信系统中的峰均功率比（PAPR）的方法和装置。 基于信道矩阵对发射符号执行发射波束形成或预编码。 对于反馈，信道矩阵可以在多个子载波上进行平均，并且平均的信道矩阵可以被进一步量化。 为了减少PAPR，可以对发送处理之后的符号执行幅度削波。 幅度削波可以通过硬削波，软削波或平滑削波来执行。
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公开(公告)号：US09749158B2
公开(公告)日：2017-08-29
申请号：US11746330
申请日：2007-05-09
IPC分类号： H04W4/00 , H04L25/03 , H04B7/0456 , H04B7/06
CPC分类号： H04L25/03343 , H04B7/0456 , H04B7/0669 , H04B7/0673 , H04L2025/03426 , H04L2025/03808
摘要： A wireless communication system includes a wireless transmit/receive unit (WTRU). The WTRU is configured to generate at least one local codebook based on a baseline codebook, and select a codeword from the local codebook that is associated with feedback.
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5.发明授权Method, apparatus and system for implementing multi-user virtual multiple-input multiple-output 有权用于实现多用户虚拟多输入多输出的方法，装置和系统公开(公告)号：US08305956B2
公开(公告)日：2012-11-06
申请号：US11834923
申请日：2007-08-07
IPC分类号： H04W4/00
CPC分类号： H04B7/0452 , H04B7/0617 , H04B7/0669 , H04B7/0671
摘要： A method and system for implementing multi-user virtual multiple-input multiple-output (MIMO) techniques for wireless transmit/receive units (WTRUs) having one or more antennas are disclosed. The system includes a base station and at least one WTRU having at least two antennas. The number of antennas of the base station is not less than the number of antennas of any of the WTRUs. The base station generates a channel matrix for the WTRUs and processes received signals from the WTRUs based on a measurement of the channel matrix. The WTRUs may perform transmit precoding or eigen-beamforming using the channel matrix information. The WTRUs may also perform transmit diversity.
摘要翻译： 公开了一种用于实现具有一个或多个天线的无线发射/接收单元（WTRU）的多用户虚拟多输入多输出（MIMO）技术的方法和系统。 该系统包括基站和至少一个具有至少两个天线的WTRU。 基站的天线数量不小于任何WTRU的天线数量。 基站为WTRU生成信道矩阵，并基于信道矩阵的测量来处理来自WTRU的接收信号。 WTRU可以使用信道矩阵信息来执行发送预编码或特征波束成形。 WTRU还可以执行发射分集。
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6.发明申请METHOD AND APPARATUS FOR AVOIDING A COLLISION BETWEEN A SCHEDULING REQUEST AND A PERIODIC RANK INDICATOR REPORT OR A PERIODIC CHANNEL QUALITY INDICATOR/PRECODING MATRIX INDICATOR REPORT 审中-公开避免安排请求与周期性排名指标报告之间冲突的方法和装置或周期性信道质量指标/预编码基准指标报告公开(公告)号：US20100002664A1
公开(公告)日：2010-01-07
申请号：US12490504
申请日：2009-06-24
IPC分类号： H04W72/00
CPC分类号： F03B13/00 , F05B2220/60 , F05B2220/604 , Y02B10/50
摘要： A method and apparatus are described for avoiding a collision between a scheduling request (SR) and a periodic rank indicator (RI) report or a periodic channel quality indicator (CQI)/precoding matrix indicator (PMI) report.
摘要翻译： 描述了一种用于避免调度请求（SR）和周期性秩指示符（RI）报告或周期性信道质量指示符（CQI）/预编码矩阵指示符（PMI）报告之间的冲突的方法和装置。
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公开(公告)号：US08483085B2
公开(公告)日：2013-07-09
申请号：US13311110
申请日：2011-12-05
CPC分类号： H04B7/0486 , H04B7/0417 , H04B7/063 , H04B7/0639 , H04L1/0026 , H04L5/0091 , H04L43/00 , H04W24/02 , H04W72/0413
摘要： A method and apparatus for measuring and reporting a rank and/or a precoding matrix for multiple-input multiple-output (MIMO) communication are disclosed. A metric indicating a channel condition is measured and a rank is selected based on the metric. The metric may be a signal-to-interference and noise ratio (SINR), throughput, a block error rate (BLER), system capacity, a sum rate, or the like. An SINR for each radio block group (RBG) for each rank is calculated. A data rate is calculated for each RBG based on the SINR for each rank. An overall rate for all RBGs is calculated for each rank. At least one rank is selected based on the overall rate. At least one precoding matrix may be selected jointly with or separately from the at least one rank.
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8.发明授权Communication system with receivers employing generalized two-stage data estimation 有权具有采用广义两阶段数据估计的接收机的通信系统公开(公告)号：US07796678B2
公开(公告)日：2010-09-14
申请号：US12468354
申请日：2009-05-19
CPC分类号： H04B1/71052 , H04B1/71055 , H04B2201/70707 , H04L25/0206 , H04L25/0246
摘要： A wireless transmit/receive unit (WTRU) is configure to receive and sample wireless signals in a shared spectrum where the wireless signal comprise encoded symbols. The WTRU has a channel estimation device configured to process received signal samples to produce an estimate of a channel response of the received signals corresponding to a matrix H. The channel estimation device is preferably configured to process the received signal samples to produce an estimate of noise variance of the received signals. The WTRU preferably has a two stage data estimator that includes a channel equalizer and a despreader. The channel equalizer is configured to process received signal samples using the estimated channel response matrix H and the estimate of noise variance to produce a spread signal estimate of the received signals. The despreader is configured to process the spread signal estimate of the received signals produced by said channel equalizer to recover encoded symbols of the received signals.
摘要翻译： 无线发射/接收单元（WTRU）被配置为在无线信号包括编码符号的共享频谱中接收和采样无线信号。 WTRU具有被配置为处理接收的信号样本以产生对应于矩阵H的接收信号的信道响应的估计的信道估计装置。信道估计装置优选地被配置为处理接收的信号样本以产生噪声估计 接收信号的方差。 WTRU优选地具有包括信道均衡器和解扩器的两级数据估计器。 信道均衡器被配置为使用估计的信道响应矩阵H和噪声方差的估计来处理接收的信号样本，以产生接收信号的扩展信号估计。 解扩器被配置为处理由所述信道均衡器产生的接收信号的扩展信号估计，以恢复所接收信号的编码符号。
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公开(公告)号：US20100074207A1
公开(公告)日：2010-03-25
申请号：US12563398
申请日：2009-09-21
CPC分类号： H04B7/0456 , H04B7/024 , H04B7/0452 , H04B7/0665 , H04W72/042
摘要： Methods for signaling multi-user multiple-input multiple output (MU-MIMO) parameters for Evolved-UTRA (E-UTRA) are disclosed. Example signaling format methods are presented that allow use of distributed virtual resource blocks (DVRB) or support of four wireless transmit/receive units (WTRUs) but maintaining a predetermined signal format size. A signaling format is also presented that signals transmission precoding matrix indexes used by all co-scheduled WTRUs.
摘要翻译： 公开了用于发送用于演进UTRA（E-UTRA）的多用户多输入多输出（MU-MIMO）参数的方法。 提出了允许使用分布式虚拟资源块（DVRB）或支持四个无线发射/接收单元（WTRU）但维持预定信号格式大小的示例信令格式方法。 还提供了一种信号格式，用于指示由所有共同调度的WTRU使用的传输预编码矩阵索引。
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10.发明申请METHOD AND APPARATUS FOR COMMUNICATING PRECODING OR BEAMFORMING INFORMATION TO USERS IN MIMO WIRELESS COMMUNICATION SYSTEMS 审中-公开用于在MIMO无线通信系统中向用户传达预编码或波束形成信息的方法和装置公开(公告)号：US20080233902A1
公开(公告)日：2008-09-25
申请号：US12053186
申请日：2008-03-21
IPC分类号： H04B1/04
CPC分类号： H04B7/0654 , H04B7/0417 , H04B7/0639 , H04L1/0038
摘要： Methods and apparatus for communicating precoding or beamforming information to users are disclosed. A feedback signal including a reported preceding matrix index (PMI) is received and a determination made as to the state of the feedback. Precoding rules associated with the determined state are then used to select a precoding matrix. The state information is transmitted to a wireless transmit receive unit (WTRU), which uses the state information and the precoding rules associated therewith to select the precoding matrix used to precoded a received precoded data signal.
摘要翻译： 公开了向用户传达预编码或波束形成信息的方法和装置。 接收包括报告的先前矩阵索引（PMI）的反馈信号，并且对反馈的状态进行确定。 然后使用与所确定的状态相关联的预编码规则来选择预编码矩阵。 状态信息被发送到无线发射接收单元（WTRU），无线发射接收单元使用状态信息和与其相关联的预编码规则来选择用于对接收的预编码数据信号进行预编码的预编码矩阵。
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