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1. 发明授权

US07194040B2 Beam-steering and beam-forming for wideband MIMO/MISO systems 有权
标题翻译：用于宽带MIMO / MISO系统的波束转向和波束形成
公开(公告)号：US07194040B2
公开(公告)日：2007-03-20
申请号：US11184601
申请日：2005-07-18
申请人： Murali Paravath Menon , John W. Ketchum , Mark Wallace , Jay Rod Walton , Steven J. Howard
发明人： Murali Paravath Menon , John W. Ketchum , Mark Wallace , Jay Rod Walton , Steven J. Howard
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04B7/0417 , H01Q3/26 , H04B7/043 , H04B7/0617 , H04B7/0634 , H04L5/0025 , H04L5/0044 , H04L5/0053 , H04L5/006 , H04L5/0085 , H04L5/0096 , H04L25/0204 , H04L25/0246 , H04L25/0248 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802 , H04W52/42
摘要： Techniques to perform beam-steering and beam-forming to transmit data on a single eigenmode in a wideband multiple-input channel. In one method, a steering vector is obtained for each of a number of subbands. Depending on how the steering vectors are defined, beam-steering or beam-forming can be achieved for each subband. The total transmit power is allocated to the subbands based on a particular power allocation scheme (e.g., full channel inversion, selective channel inversion, water-filling, or uniform). A scaling value is then obtained for each subband based on its allocated transmit power. Data to be transmitted is coded and modulated to provide modulation symbols. The modulation symbols to be transmitted on each subband are scaled with the subband's scaling value and further preconditioned with the subband's steering vector. A stream of preconditioned symbols is then formed for each transmit antenna.
摘要翻译：执行波束转向和波束成形以在宽带多输入通道中的单个本征模上传输数据的技术。在一种方法中，为多个子带中的每一个获得导向矢量。取决于如何定义导向矢量，可以为每个子带实现波束转向或波束形成。基于特定功率分配方案（例如，全信道反转，选择性信道反转，充水或均匀）将总发射功率分配给子带。然后根据其分配的发射功率，为每个子带获得缩放值。要发送的数据被编码和调制以提供调制符号。要在每个子带上发送的调制符号用子带的缩放值进行缩放，并进一步用子带的导向矢量进行预处理。然后为每个发射天线形成预处理符号流。

2. 发明授权

US06940917B2 Beam-steering and beam-forming for wideband MIMO/MISO systems 有权
标题翻译：用于宽带MIMO / MISO系统的波束转向和波束形成
公开(公告)号：US06940917B2
公开(公告)日：2005-09-06
申请号：US10228393
申请日：2002-08-27
申请人： Murali Paravath Menon , John W. Ketchum , Mark Wallace , Jay Rod Walton , Steven J. Howard
发明人： Murali Paravath Menon , John W. Ketchum , Mark Wallace , Jay Rod Walton , Steven J. Howard
IPC分类号： H04J99/00 , H01Q3/26 , H04B7/005 , H04B7/04 , H04B7/06 , H04J11/00 , H04L27/26 , H04B7/02
CPC分类号： H04B7/0417 , H01Q3/26 , H04B7/043 , H04B7/0617 , H04B7/0634 , H04L5/0025 , H04L5/0044 , H04L5/0053 , H04L5/006 , H04L5/0085 , H04L5/0096 , H04L25/0204 , H04L25/0246 , H04L25/0248 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802 , H04W52/42
摘要： Techniques to perform beam-steering and beam-forming to transmit data on a single eigenmode in a wideband multiple-input channel. In one method, a steering vector is obtained for each of a number of subbands. Depending on how the steering vectors are defined, beam-steering or beam-forming can be achieved for each subband. The total transmit power is allocated to the subbands based on a particular power allocation scheme (e.g., full channel inversion, selective channel inversion, water-filling, or uniform). A scaling value is then obtained for each subband based on its allocated transmit power. Data to be transmitted is coded and modulated to provide modulation symbols. The modulation symbols to be transmitted on each subband are scaled with the subband's scaling value and further preconditioned with the subband's steering vector. A stream of preconditioned symbols is then formed for each transmit antenna.
摘要翻译：执行波束转向和波束成形以在宽带多输入通道中的单个本征模上传输数据的技术。在一种方法中，为多个子带中的每一个获得导向矢量。取决于如何定义导向矢量，可以为每个子带实现波束转向或波束形成。基于特定功率分配方案（例如，全信道反转，选择性信道反转，充水或均匀）将总发射功率分配给子带。然后根据其分配的发射功率，为每个子带获得缩放值。要发送的数据被编码和调制以提供调制符号。要在每个子带上发送的调制符号用子带的缩放值进行缩放，并进一步用子带的导向矢量进行预处理。然后为每个发射天线形成预处理符号流。

3. 发明授权

US08144814B2 Signal quality estimator 有权
标题翻译：信号质量估计器
公开(公告)号：US08144814B2
公开(公告)日：2012-03-27
申请号：US11750769
申请日：2007-05-18
申请人： Murali Paravath Menon , Mark S. Wallace
发明人： Murali Paravath Menon , Mark S. Wallace
IPC分类号： H03D3/00 , H03K9/06
CPC分类号： H04L1/206 , H04L25/067
摘要： Techniques for estimating signal quality in a communication system are described. Scaled errors are obtained for inphase (I) and quadrature (Q) components of detected symbols. The scaled errors are determined based on a first function having higher resolution for small errors than large errors between the detected symbols and nearest modulation symbols. The first function may be a square root function or some other function that can provide good resolution for both low and high SNRs. The scaled errors for the I and Q components are combined to obtain combined scaled errors, which are averaged to obtain an average scaled error. A signal quality estimate is then determined based on the average scaled error and in accordance with a second function having non-linearity to compensate for the first function.
摘要翻译：描述用于估计通信系统中的信号质量的技术。对于检测到的符号的同相（I）和正交（Q）分量获得了缩放误差。基于具有比检测符号和最近调制符号之间的大误差更小的误差的分辨率的第一函数来确定缩放误差。第一功能可以是平方根功能或可以为低SNR和高SNR提供良好分辨率的一些其他功能。将I和Q分量的缩放误差组合以获得组合的缩放误差，其被平均以获得平均缩放误差。然后基于平均缩放误差并根据具有非线性以补偿第一功能的第二函数来确定信号质量估计。

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