公开(公告)号：US08331469B2

公开(公告)日：2012-12-11

申请号：US12564681

申请日：2009-09-22

申请人： Mark Kent ,  Vinko Erceg ,  Uri M. Landau ,  Pieter G.W. van Rooyen ,  Pieter Roux

发明人： Mark Kent ,  Vinko Erceg ,  Uri M. Landau ,  Pieter G.W. van Rooyen ,  Pieter Roux

IPC分类号： H04L27/28

CPC分类号： H04L25/03343 ,  H04B1/7097 ,  H04B7/0634 ,  H04B7/0848 ,  H04B2201/709709 ,  H04L25/0204 ,  H04L25/0214 ,  H04L25/0244 ,  H04L25/025 ,  H04L25/03019 ,  H04L2025/03426 ,  H04L2025/03726 ,  H04L2025/03808

摘要： In wireless systems, a method and system for pre-equalization in a single weight (SW) single channel (SC) multiple-input multiple-output (MIMO) system are provided. A first receive antenna and at least one additional receive antenna may receive a plurality of SC communication signals transmitted from at least two transmit antennas. Estimates of the propagation channels between transmit and receive antennas may be performed concurrently and may be determined from baseband combined channel estimates. Channel weights may be determined to modify the signals received by the additional receive antennas. Pre-equalization weight parameters may be determined to modify subsequent signals transmitted from the transmit antennas. The pre-equalization weight parameters may be based on the propagation channel estimates and may be determined by LMS, RLS, DMI, or by minimizing a cost function. Closed loop transmit diversity may also be supported.

摘要翻译： 在无线系统中，提供了在单加权（SW）单通道（SC）多输入多输出（MIMO）系统中预均衡的方法和系统。 第一接收天线和至少一个另外的接收天线可以接收从至少两个发射天线发射的多个SC通信信号。 可以同时执行发射天线和接收天线之间的传播信道的估计，并且可以从基带组合信道估计来确定。 可以确定信道权重以修改由附加接收天线接收的信号。 可以确定预均衡权重参数以修改从发射天线发射的后续信号。 预均衡权重参数可以基于传播信道估计，并且可以由LMS，RLS，DMI或通过最小化成本函数来确定。 也可以支持闭环发射分集。

公开(公告)号：US20100008437A1

公开(公告)日：2010-01-14

申请号：US12564681

申请日：2009-09-22

申请人： Mark Kent ,  Vinko Erceg ,  Uri M. Landau ,  Pieter G.W. van Rooyen ,  Pieter Roux

发明人： Mark Kent ,  Vinko Erceg ,  Uri M. Landau ,  Pieter G.W. van Rooyen ,  Pieter Roux

IPC分类号： H04L27/28

CPC分类号： H04L25/03343 ,  H04B1/7097 ,  H04B7/0634 ,  H04B7/0848 ,  H04B2201/709709 ,  H04L25/0204 ,  H04L25/0214 ,  H04L25/0244 ,  H04L25/025 ,  H04L25/03019 ,  H04L2025/03426 ,  H04L2025/03726 ,  H04L2025/03808

摘要： In wireless systems, a method and system for pre-equalization in a single weight (SW) single channel (SC) multiple-input multiple-output (MIMO) system are provided. A first receive antenna and at least one additional receive antenna may receive a plurality of SC communication signals transmitted from at least two transmit antennas. Estimates of the propagation channels between transmit and receive antennas may be performed concurrently and may be determined from baseband combined channel estimates. Channel weights may be determined to modify the signals received by the additional receive antennas. Pre-equalization weight parameters may be determined to modify subsequent signals transmitted from the transmit antennas. The pre-equalization weight parameters may be based on the propagation channel estimates and may be determined by LMS, RLS, DMI, or by minimizing a cost function. Closed loop transmit diversity may also be supported.

摘要翻译： 在无线系统中，提供了在单加权（SW）单通道（SC）多输入多输出（MIMO）系统中预均衡的方法和系统。 第一接收天线和至少一个另外的接收天线可以接收从至少两个发射天线发射的多个SC通信信号。 可以同时执行发射天线和接收天线之间的传播信道的估计，并且可以从基带组合信道估计来确定。 可以确定信道权重以修改由附加接收天线接收的信号。 可以确定预均衡权重参数以修改从发射天线发射的后续信号。 预均衡权重参数可以基于传播信道估计，并且可以由LMS，RLS，DMI或通过最小化成本函数来确定。 也可以支持闭环发射分集。

公开(公告)号：US20090161690A1

公开(公告)日：2009-06-25

申请号：US12343955

申请日：2008-12-24

申请人： Mark Kent ,  Vinko Erceg ,  Uri M. Landau ,  Pieter G.W. van Rooyen ,  Pieter Roux

发明人： Mark Kent ,  Vinko Erceg ,  Uri M. Landau ,  Pieter G.W. van Rooyen ,  Pieter Roux

IPC分类号： H04J3/00

CPC分类号： H04B7/0848 ,  H04B7/0634 ,  H04L1/0003 ,  H04L1/1845 ,  H04L25/0204 ,  H04L25/0212

摘要： In a wireless system, a method and system for channel estimation in a single channel MIMO system comprising two-transmit and multiple-receive antennas for WCDMA/HSDPA are provided. A first receive antenna and at least one additional receive antenna may receive a plurality of SC communication signals transmitted from a first and an additional transmit antennas. Estimates of the propagation channels between transmit and receive antennas may be performed concurrently and may be determined from a baseband combined channel estimate. The integration time may be based on channel estimation accuracy and wireless modem performance. The signals received in the additional receive antennas may be multiplied by a rotation waveform to achieve channel orthogonality. The rotation waveform's amplitude and phase components may be modified based on the channel estimates. Rotation of the received signals in the additional receive antennas may be continuous or periodic.

摘要翻译： 在无线系统中，提供了一种包括用于WCDMA / HSDPA的双发和多接收天线的单信道MIMO系统中信道估计的方法和系统。 第一接收天线和至少一个另外的接收天线可以接收从第一和另外的发射天线发射的多个SC通信信号。 可以同时执行发射天线和接收天线之间的传播信道的估计，并且可以从基带组合信道估计来确定。 积分时间可以基于信道估计精度和无线调制解调器性能。 在附加接收天线中接收的信号可以乘以旋转波形以实现信道正交性。 可以基于信道估计来修改旋转波形的幅度和相位分量。 接收信号在附加接收天线中的旋转可以是连续的或周期性的。

公开(公告)号：US08068570B2

公开(公告)日：2011-11-29

申请号：US12401151

申请日：2009-03-10

申请人： Severine Catreux ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

发明人： Severine Catreux ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

IPC分类号： H04B7/10

CPC分类号： H04L1/0631 ,  H04B7/0634 ,  H04B7/0697 ,  H04B7/0848

摘要： A method for processing communication signals is disclosed and may include, in a receiver and/or a baseband processor coupled to the receiver, the receiver comprising a plurality of antennas, generating a plurality of RF weighting values based on one or more output bit error rates of the receiver. A plurality of spatially-multiplexed RF signals, which are received by the receiver, may be weighted with the one or more of the generated plurality of RF weighting values, to form a plurality of weighted RF signals. Two or more of the generated plurality of weighted RF signals may be combined to form one or more combined RF signals. Each of the one or more combined RF signals may be processed by a different RF processing chain. The one or more output bit error rates of the receiver may be minimized by the generation of the plurality of RF weighting values.

摘要翻译： 公开了一种用于处理通信信号的方法，并且可以在耦合到接收机的接收机和/或基带处理器中包括多个天线的接收机，其基于一个或多个输出误码率产生多个RF加权值 的接收器。 由接收机接收的多个空间多路复用RF信号可以利用所生成的多个RF加权值中的一个或多个进行加权，以形成多个加权RF信号。 所生成的多个加权RF信号中的两个或更多个可以被组合以形成一个或多个组合RF信号。 一个或多个组合RF信号中的每一个可以由不同的RF处理链来处理。 可以通过生成多个RF加权值来使接收机的一个或多个输出误码率最小化。

公开(公告)号：US07839842B2

公开(公告)日：2010-11-23

申请号：US11231699

申请日：2005-09-21

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 ,  H04L12/50

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其余信道增益的信道增益 部分信号。

公开(公告)号：US20090201205A1

公开(公告)日：2009-08-13

申请号：US12418091

申请日：2009-04-03

申请人： Severine Catreux-Erceg ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

发明人： Severine Catreux-Erceg ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

IPC分类号： H01Q3/00

CPC分类号： H04B1/02 ,  H04B1/06 ,  H04B7/061 ,  H04B7/0691 ,  H04B7/0697 ,  H04B7/0808 ,  H04B7/0814 ,  H04B7/082 ,  H04B7/0874 ,  H04L1/0618

摘要： Systems and methods that provide channel-adaptive antenna selection in multi-antenna-element communication systems are provided. In one embodiment, a method that selects a subset of receive antennas of a receiver to receive a transmitted RF signal may include, for example, one or more of the following: establishing possible subsets of the receive antennas; determining sets of channel parameter statistics corresponding to the possible subsets of the receive antennas; computing output bit error rates of the receiver, each output bit error rate being computed based on at least one set of channel parameter statistics; selecting a particular possible subset of the receive antennas based upon a criterion predicated on the computed output bit error rates; and connecting one or more RF chains of the receiver to the receive antennas of the selected particular possible subset.

摘要翻译： 提供了在多天线元件通信系统中提供通道自适应天线选择的系统和方法。 在一个实施例中，选择接收器的接收天线的子集以接收所发送的RF信号的方法可以包括例如以下中的一个或多个：建立接收天线的可能子集; 确定与所述接收天线的可能子集相对应的信道参数统计的集合; 计算接收机的输出比特错误率，每个输出误码率是基于至少一组信道参数统计来计算的; 基于所计算的输出误码率的准则，选择接收天线的特定可能子集; 以及将所述接收机的一个或多个RF链连接到所选择的特定可能子集的接收天线。

公开(公告)号：US08401591B2

公开(公告)日：2013-03-19

申请号：US13209968

申请日：2011-08-15

申请人： Severine Catreux-Erceg ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

发明人： Severine Catreux-Erceg ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

IPC分类号： H04B1/38

CPC分类号： H04B1/02 ,  H04B1/06 ,  H04B7/061 ,  H04B7/0691 ,  H04B7/0697 ,  H04B7/0808 ,  H04B7/0814 ,  H04B7/082 ,  H04B7/0874 ,  H04L1/0618

摘要： Systems and methods that provide channel-adaptive antenna selection in multi-antenna-element communication systems are provided. In one embodiment, a method that selects a subset of receive antennas of a receiver to receive a transmitted RF signal may include, for example, one or more of the following: establishing possible subsets of the receive antennas; determining sets of channel parameter statistics corresponding to the possible subsets of the receive antennas; computing output bit error rates of the receiver, each output bit error rate being computed based on at least one set of channel parameter statistics; selecting a particular possible subset of the receive antennas based upon a criterion predicated on the computed output bit error rates; and connecting one or more RF chains of the receiver to the receive antennas of the selected particular possible subset.

公开(公告)号：US20110274206A1

公开(公告)日：2011-11-10

申请号：US13186342

申请日：2011-07-19

申请人： Severine Catreux ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

发明人： Severine Catreux ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

IPC分类号： H04L27/00 ,  H04B1/02

CPC分类号： H04L1/0002 ,  H04B7/0615 ,  H04B7/0842 ,  H04L27/2608

摘要： A system and method for generating weight values based on maximum data rate for weighting elements included within signal weighting and combining arrangements used in various multi-antenna transmitter and receiver structures is disclosed herein. Weighting values for a given signal combining arrangement are set so as to maximize an output data rate of the applicable multi-antenna system in the presence of adaptive bit loading of the subcarriers of a transmitted signal. The disclosed techniques may be employed to maximize a data rate of a multi-antenna communication system by using adaptive bit loading and RF and baseband weighting schemes. In this case a search is conducted over various combinations of RF and baseband weights in order to find the weight combination which, when adaptive bit loading is also employed, maximizes the data rate.

摘要翻译： 本文公开了一种用于基于包括在信号加权中的加权元件的最大数据速率和在各种多天线发射机和接收机结构中使用的组合布置来生成权重值的系统和方法。 设定给定信号组合装置的加权值，以便在存在发射信号的子载波的自适应位加载的情况下，最大化可应用的多天线系统的输出数据速率。 所公开的技术可以用于通过使用自适应比特加载和RF和基带加权方案来最大化多天线通信系统的数据速率。 在这种情况下，对RF和基带权重的各种组合进行搜索，以便找到当采用自适应比特加载时的权重组合，使数据速率最大化。

公开(公告)号：US08036711B2

公开(公告)日：2011-10-11

申请号：US13027702

申请日：2011-02-15

申请人： Severine Catreux-Erceg ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

发明人： Severine Catreux-Erceg ,  Vinko Erceg ,  Pieter Roux ,  Pieter Van Rooyen ,  Jack Winters

IPC分类号： H04M1/00 ,  H04B1/06

CPC分类号： H04B7/0874 ,  H04B1/7115 ,  H04B7/061 ,  H04B7/0691 ,  H04B7/0697 ,  H04B7/0808 ,  H04B7/0814 ,  H04L1/0618

摘要： Systems and methods that provide antenna selection in multi-antenna-element communication systems are provided. In one embodiment, a system that selects N antenna elements in an M-antenna-element transmitter or an M-antenna-element receiver, in which N is less than M, may include, for example, M antenna elements in the M-antenna-element transmitter or the M-antenna-element receiver; N RF chains; and a switch coupled to the N RF chains. The M-antenna-element receiver may determine a bit error rate for each possible N antenna element subset of the M antenna elements. The M-antenna-element receiver may determine the particular N antenna element subset with a lowest bit error rate. In response to the determination of the particular N antenna element subset with the lowest bit error rate, the switch may couple the N RF chains to the particular N antenna element subset with the lowest bit error rate.

摘要翻译： 提供了在多天线元件通信系统中提供天线选择的系统和方法。 在一个实施例中，选择N小于M的M天线单元发射机或M天线单元接收机中的N个天线元素的系统可以包括例如M天线中的M个天线元件 元件发射器或M天线元件接收器; N射频链; 以及耦合到N个RF链的开关。 M天线单元接收机可以确定M个天线元件的每个可能的N个天线元素子集的误比特率。 M天线单元接收机可以以最低误码率确定特定的N个天线元件子集。 响应于具有最低误码率的特定N个天线元件子集的确定，开关可将N个RF链耦合到具有最低误码率的特定N个天线元件子集。

公开(公告)号：US20110150116A1

公开(公告)日：2011-06-23

申请号：US13037611

申请日：2011-03-01

申请人： Jun Zheng ,  Chengjin Zhang ,  Severine Catreux-Erceg ,  Vinko Erceg ,  Pieter Roux ,  Pieter van Rooyen

发明人： Jun Zheng ,  Chengjin Zhang ,  Severine Catreux-Erceg ,  Vinko Erceg ,  Pieter Roux ,  Pieter van Rooyen

IPC分类号： H04L27/28

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。