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1. 发明申请

WO2008094770B1 METHOD AND APPARATUS FOR FINITE IMPULSE RESPONSE CYCLIC-SHIFT DIVERSITY 审中-公开
标题翻译：有意义的反应循环移位多样性的方法和装置
公开(公告)号：WO2008094770B1
公开(公告)日：2008-10-09
申请号：PCT/US2008051281
申请日：2008-01-17
申请人： MOTOROLA INC , HILLERY WILLIAM J , KRAUSS THOMAS P , MONDAL BISHWARUP , THOMAS TIMOTHY A , VOOK FREDERICK W
发明人： HILLERY WILLIAM J , KRAUSS THOMAS P , MONDAL BISHWARUP , THOMAS TIMOTHY A , VOOK FREDERICK W
IPC分类号： H04L1/02 , H04B7/06 , H04B7/26
CPC分类号： H04L5/0007 , H04B7/0671
摘要： A generalized form of cyclic shift diversity is described for use in an OFDM system with multiple transmit antennas. Multiple cyclic shifts are performed for each transmit antenna and the shifted signals are scaled and summed to form a time-domain data stream for each transmit antenna. A cyclic extension is added to each data stream prior to transmission.
摘要翻译：描述了在具有多个发射天线的OFDM系统中使用的循环移位分集的通用形式。对于每个发射天线执行多个循环移位，并且移位的信号被缩放和相加以形成每个发射天线的时域数据流。在传输之前，将循环扩展添加到每个数据流。

2. 发明申请

WO2010075172A3 SYSTEM AND METHOD FOR COMBINATION MULTIPLE INPUT, MULTIPLE OUTPUT (MIMO) AND BEAMFORMING 审中-公开
标题翻译：用于组合多输入，多输出（MIMO）和波束成形的系统和方法
公开(公告)号：WO2010075172A3
公开(公告)日：2010-08-26
申请号：PCT/US2009068503
申请日：2009-12-17
申请人： MOTOROLA INC , KRAUSS THOMAS P , VOOK FREDERICK W , ZHUANG XIANGYANG
发明人： KRAUSS THOMAS P , VOOK FREDERICK W , ZHUANG XIANGYANG
IPC分类号： H04B7/04 , H04W16/28 , H04W84/10
CPC分类号： H04B7/0413 , H04B7/0617 , H04B7/10 , H04B17/21
摘要： Specifically, a method and system are provided that performs MIMO and beamforming at a base station (102) based on an uplink channel sounding (ULCS) from only one of a mobile station's (130) antennas (132, 134) and closed-loop multiple input, multiple output (MIMO) schemes based on the singular value decomposition (SVD) of the channel matrix. The ULCS is limited to sounding and the channel uses fewer than an optimal number of transmit antennas, for example, one for WiMAX. The base station's array (118, 120, 122, 124) may be configured for a full array transmitting mode (800, 900) or a sub-array transmitting mode (1200, 1300).
摘要翻译：具体而言，提供了一种方法和系统，其基于来自移动站（130）天线（132,134）中的仅一个的上行链路信道探测（ULCS）和闭环多路复用输入，基于信道矩阵的奇异值分解（SVD）的多输出（MIMO）方案。 ULCS仅限于探测，并且信道使用的发射天线数量少于最佳数量，例如，用于WiMAX。基站的阵列（118,120,122,124）可以被配置用于全阵列发射模式（800,900）或者子阵列发射模式（1200,1300）。

3. 发明申请

WO2008011345A3 RECEIVER HAVING MULTI-ANTENNA LOG LIKELIHOOD RATIO GENERATION WITH CHANNEL ESTIMATION ERROR 审中-公开
标题翻译：具有通道估计误差的多天线日志比例生成的接收器
公开(公告)号：WO2008011345A3
公开(公告)日：2008-04-24
申请号：PCT/US2007073480
申请日：2007-07-13
申请人： MOTOROLA INC , THOMAS TIMOTHY A , KRAUSS THOMAS P
发明人： THOMAS TIMOTHY A , KRAUSS THOMAS P
IPC分类号： H04L25/03 , H04L1/00
CPC分类号： H04L1/0656 , H04L1/0052 , H04L1/0055 , H04L25/0204 , H04L25/03242 , H04L25/03292 , H04L25/03318
摘要： A receiver and methods of operation wherein Log-Likelihood-Ratio calculation are performed for arbitrary channel estimators with linear Minimum-Mean-Square-Error (MMSE) combining, successive cancellation combining, or joint detection. In some embodiments, the use of linear MMSE or successive cancellation combining may be employed to greatly lower the computational complexity over joint detection. In (401) a channel estimation MSE as a function of frequency, the transmitter modulation type, and a noise power are provided to the LLR component (313). A signal from a transmitter is received at one of the various antennas (301), (303) and respective receiver component (305), (307) in block (403). The channel estimation component (309) computes a channel estimate for the signal from the transmitter, or computes multiple channel estimates for multiple transmitter sources, in block (405). In block (407), decoder inputs are determined as a function of the channel estimates, the received signal, noise power, and channel estimation MSE.
摘要翻译：一种接收机和操作方法，其中对具有线性最小均方误差（MMSE）组合，连续消除组合或联合检测的任意信道估计器执行对数似然比计算。在一些实施例中，可以采用线性MMSE或连续消除组合的使用以大大降低联合检测的计算复杂度。在（401）中，向LLR分量（313）提供作为频率的函数的信道估计MSE，发射机调制类型和噪声功率。来自发射机的信号在块（403）中的各种天线（301），（303）和相应的接收机组件（305），（307）中的一个处被接收。在块（405）中，信道估计组件（309）计算来自发射机的信号的信道估计，或计算多个发射机源的多个信道估计。在块（407）中，解码器输入被确定为信道估计，接收信号，噪声功率和信道估计MSE的函数。

4. 发明申请

WO2005013530A3 OFDM COMMUNICATION SYSTEM 审中-公开
标题翻译： OFDM通信系统
公开(公告)号：WO2005013530A3
公开(公告)日：2005-05-12
申请号：PCT/US2004022333
申请日：2004-07-13
申请人： MOTOROLA INC , KRAUSS THOMAS P , BAUM KEVIN L , NANGIA VIJAY
发明人： KRAUSS THOMAS P , BAUM KEVIN L , NANGIA VIJAY
IPC分类号： H04B7/216 , H04J3/06 , H04J11/00 , H04L20060101
CPC分类号： H04L5/0021 , H04L5/0048 , H04L25/0202
摘要： A Staggered spread OFCDM scheme is utilized that improves channel estimation. In a first embodiment, each chip stream is time shifted (Fig. 5 unit 305) by a predetermined amount and then transmitted on a predetermined subcarrier. This results in time-spread symbols being staggered (time-offsets) on different subcarriers (Fig. 4) allowing for more frequent sampling of the channel. In a second embodiment a staggered spreading approach is applied in the frequency dimension (Fig. 4) to improve the performance of a system with spreading in the frequency dimension.
摘要翻译：利用交错的扩展OFCDM方案来改进信道估计。在第一实施例中，每个芯片流被时移（图5单元305）预定量，然后在预定的子载波上传输。这导致时间扩展符号在不同子载波上交错（时间偏移）（图4），允许更频繁地对信道进行采样。在第二实施例中，在频率维度上应用交错扩展方法（图4），以改善在频率维度上扩展的系统的性能。

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