公开(公告)号：US20180020441A1

公开(公告)日：2018-01-18

申请号：US15545907

申请日：2016-01-21

申请人： Titus Lo

发明人： Titus Lo

IPC分类号： H04W72/04 ,  H04W76/02 ,  H04W40/24 ,  H04W40/22 ,  H04W40/32 ,  H04W8/00 ,  H04W88/04

CPC分类号： H04W72/0406 ,  H04W8/005 ,  H04W40/22 ,  H04W40/244 ,  H04W40/32 ,  H04W72/044 ,  H04W76/14 ,  H04W88/04

摘要： Methods, apparatus, and other technology are disclosed for collaborative transmission in a wireless communication system. In one embodiment, a transmitter receives control information from a receiver in the wireless communication system. The control information indicates time-frequency resources allocated or assigned for data transmission by the transmitter. The transmitter sends configuration information to a second transmitter in the wireless communication system. The configuration information includes indication of the time-frequency resource allocation or assignment. The transmitter to the second transmitter the data which to be transmitted to the receiver using the allocated time-frequency resources.

公开(公告)号：US08681887B2

公开(公告)日：2014-03-25

申请号：US13557736

申请日：2012-07-25

申请人： Titus Lo ,  Ruifeng Wang

发明人： Titus Lo ,  Ruifeng Wang

IPC分类号： H04L27/28

CPC分类号： H04L27/2662 ,  H04L1/0054 ,  H04L25/0204 ,  H04L25/0236 ,  H04L27/261 ,  H04L27/2647

摘要： A system and method for estimating a channel in a wireless receiver is disclosed. The method comprises receiving a block of “n” transmitted symbols, the symbols including pilot symbols and “d” data symbols, estimating a channel using the pilot symbols to create a channel estimate, choosing a group of “m” strongest symbols from the “d” received symbols, compensating the “m” strongest symbols using the channel estimate to create a group of “m” compensated symbols, re-estimating the channel using the group of “m” compensated symbols and pilot symbols; and either (1) repeating the steps of choosing a group of “m” strongest symbols, compensating the group of “m” strongest symbols and re-estimating the channel, or (2) using a latest channel estimate to compensate all symbols within the block. The system comprises a wireless receiver having an estimator programmed according to the method.

摘要翻译： 公开了一种用于估计无线接收机中的信道的系统和方法。 该方法包括：接收“n”个发送符号的块，该符号包括导频符号和“d”个数据符号，使用导频符号估计信道以创建信道估计，从​​“ d“个接收到的符号，使用信道估计补偿”m“个最强符号以创建一组”m“个补偿符号，使用”m“个补偿符号和导频符号组重新估计信道; 并且（1）重复选择一组“m”个最强符号的步骤，补偿“m”个最强符号组并重新估计该信道，或者（2）使用最新信道估计来补偿该“ 块。 该系统包括具有根据该方法编程的估计器的无线接收器。

公开(公告)号：US08532239B2

公开(公告)日：2013-09-10

申请号：US13494184

申请日：2012-06-12

申请人： Vafa Ghazi-Moghadam ,  Titus Lo

发明人： Vafa Ghazi-Moghadam ,  Titus Lo

IPC分类号： H04L1/02

CPC分类号： H04B7/0851 ,  H04L25/023 ,  H04L27/2647

摘要： A method provides for an improved compensation of Fourier channel characteristics in a wireless communication embodiment. The method identifies one or more information carriers as pseudo pilot tones whose information may be realized to enhance the determination of the complex coefficient of the communication channel.

摘要翻译： 一种方法提供了在无线通信实施例中对傅里叶频道特性的改进的补偿。 该方法将一个或多个信息载体标识为可以实现其信息的伪导频音，以增强通信信道的复系数的确定。

公开(公告)号：US20120250803A1

公开(公告)日：2012-10-04

申请号：US13494184

申请日：2012-06-12

申请人： Vafa Ghazi-Moghadam ,  Titus Lo

发明人： Vafa Ghazi-Moghadam ,  Titus Lo

IPC分类号： H04L27/06

CPC分类号： H04B7/0851 ,  H04L25/023 ,  H04L27/2647

摘要： A method provides for an improved compensation of Fourier channel characteristics in a wireless communication embodiment. The method identifies one or more information carriers as pseudo pilot tones whose information may be realized to enhance the determination of the complex coefficient of the communication channel.

摘要翻译： 一种方法提供了在无线通信实施例中对傅里叶频道特性的改进的补偿。 该方法将一个或多个信息载体标识为可以实现其信息的伪导频音，以增强通信信道的复系数的确定。

公开(公告)号：US20100135425A1

公开(公告)日：2010-06-03

申请号：US12640234

申请日：2009-12-17

申请人： Titus Lo ,  Ruifeng Wang

发明人： Titus Lo ,  Ruifeng Wang

IPC分类号： H04B1/10 ,  H04L27/28

CPC分类号： H04L27/2662 ,  H04L1/0054 ,  H04L25/0204 ,  H04L25/0236 ,  H04L27/261 ,  H04L27/2647

摘要： A system and method for estimating a channel in a wireless receiver is disclosed. The method preferably applies to a communication system using the OFDM standard. The method comprises receiving a block of “n” transmitted symbols, the symbols including pilot symbols and “d” data symbols, estimating a channel using the pilot symbols to create a channel estimate, choosing a group of “m” strongest symbols from the “d” received symbols, compensating the “m” strongest symbols using the channel estimate to create a group of “m” compensated symbols, re-estimating the channel using the group of “m” compensated symbols and pilot symbols; and either (1) repeating the steps of choosing a group of “m” strongest symbols, compensating the group of “m” strongest symbols and re-estimating the channel, or (2) using a latest channel estimate to compensate all symbols within the block. The system comprises a wireless receiver having an estimator programmed, for example, using DSP or ASIC and imbedded into the wireless system design software for accomplishing the steps set forth according to the method.

摘要翻译： 公开了一种用于估计无线接收机中的信道的系统和方法。 该方法优选地应用于使用OFDM标准的通信系统。 该方法包括：接收“n”个发送符号的块，该符号包括导频符号和“d”个数据符号，使用导频符号估计信道以创建信道估计，从​​“ d“个接收到的符号，使用信道估计补偿”m“个最强符号以创建一组”m“个补偿符号，使用”m“个补偿符号和导频符号组重新估计信道; 并且（1）重复选择一组“m”个最强符号的步骤，补偿“m”个最强符号组并重新估计该信道，或者（2）使用最新信道估计来补偿该“ 块。 该系统包括具有例如使用DSP或ASIC编程并且嵌入无线系统设计软件中的估计器的无线接收器，用于完成根据该方法阐述的步骤。

公开(公告)号：US20090180569A1

公开(公告)日：2009-07-16

申请号：US12410291

申请日：2009-03-24

申请人： Titus Lo ,  Vahid Tarokh

发明人： Titus Lo ,  Vahid Tarokh

IPC分类号： H04B7/02

CPC分类号： H04L1/0612 ,  H04B7/04 ,  H04B7/0848 ,  H04B7/0854 ,  H04L1/0054 ,  H04L1/0631

摘要： An improved multi-antenna receiver is realized for detecting signals transmitted by a multi-antenna transmitter by summing signals received at the plurality of receiver antennas after multiplying each by a respective constant. The summed signal is applied to a maximum likelihood detector. The respective constants, λj, where j is an index designating a particular receiver antenna, are determined by evaluating the largest eigenivector of the matrix A, where Λ is a vector containing values λj, and A is a matrix containing elements αij, which is the transfer function between the ith transmitter antenna to the jth receiver antenna. The αij terms are determined in the receiver in conventional ways.

摘要翻译： 实现了一种改进的多天线接收机，用于通过对在多个接收机天线之间接收的信号进行求和来检测由多天线发射机发送的信号，每个乘以相应的常数。 将求和的信号应用于最大似然检测器。 通过评估矩阵A的最大特征向量来确定相应常数lambdaj，其中j是指定特定接收机天线的索引，其中λ是包含值lambdaj的向量，并且A是包含元素alphaij的矩阵，其是 第i个发射天线与第j个接收机天线之间的传递函数。 alphaij术语在接收机中以常规方式确定。

公开(公告)号：US07526040B2

公开(公告)日：2009-04-28

申请号：US11371173

申请日：2006-03-08

申请人： Titus Lo ,  Vahid Tarokh

发明人： Titus Lo ,  Vahid Tarokh

IPC分类号： H04B7/02

CPC分类号： H04L1/0612 ,  H04B7/04 ,  H04B7/0848 ,  H04B7/0854 ,  H04L1/0054 ,  H04L1/0631

摘要： An improved multi-antenna receiver is realized for detecting signals transmitted by a multi-antenna transmitter by summing signals received at the plurality of receiver antennas after multiplying each by a respective constant. The summed signal is applied to a maximum likelihood detector. The respective constants, λj, where j is an index designating a particular receiver antenna, are determined by evaluating the largest eigenvector of the matrix A, where Λ is a vector containing the values λj, and A is a matrix containing elements αij, which is the transfer function between the ith transmitter antenna to the jth receiver antenna. The αij terms are determined in the receiver in conventional ways.

摘要翻译： 实现了一种改进的多天线接收机，用于通过对在多个接收机天线之间接收的信号进行求和来检测由多天线发射机发送的信号，每个乘以相应的常数。 将求和的信号应用于最大似然检测器。 通过评估矩阵A的最大特征向量来确定相应常数lambdaj，其中j是指定特定接收机天线的索引，其中λ是包含值lambdaj的向量，并且A是包含元素alphaij的矩阵， 第i个发射天线与第j个接收机天线之间的传递函数。 alphaij术语在接收机中以常规方式确定。

公开(公告)号：US20070009070A1

公开(公告)日：2007-01-11

申请号：US11371173

申请日：2006-03-08

申请人： Titus Lo ,  Vahid Tarokh

发明人： Titus Lo ,  Vahid Tarokh

IPC分类号： H04B7/10

CPC分类号： H04L1/0612 ,  H04B7/04 ,  H04B7/0848 ,  H04B7/0854 ,  H04L1/0054 ,  H04L1/0631

摘要： An improved multi-antenna receiver is realized for detecting signals transmitted by a multi-antenna transmitter by summing signals received at the plurality of receiver antennas after multiplying each by a respective constant. The summed signal is applied to a maximum likelihood detector. The respective constants, λj, where j is an index designating a particular receiver antenna, are determined by evaluating the largest eigenvector of the matrix A, where Λ is a vector containing the values λj, and A is a matrix containing elements αij, which is the transfer function between the ith transmitter antenna to the jth receiver antenna. The αij terms are determined in the receiver in conventional ways.

摘要翻译： 实现了一种改进的多天线接收机，用于通过对在多个接收机天线之间接收的信号进行求和来检测由多天线发射机发送的信号，每个乘以相应的常数。 将求和的信号应用于最大似然检测器。 通过评估矩阵A的最大特征向量来确定其中j是指定特定接收机天线的索引的相应常数，其中λ是包含值λ的j ，并且A是包含元素αij的矩阵，其是第i个发射机天线到第j个超级天线之间的传递函数 >接收天线。 在常规方式中，在接收机中确定ααij项。

公开(公告)号：US06987958B1

公开(公告)日：2006-01-17

申请号：US10046243

申请日：2002-01-16

申请人： Titus Lo ,  Dennis Rosenauer ,  Douglas Frank Stolarz

发明人： Titus Lo ,  Dennis Rosenauer ,  Douglas Frank Stolarz

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H01Q3/26

摘要： A method provides a technique for optimally combining communication beams. The method forms a plurality of beams from captured signals. One beam is selected as the primary beam while a subset of the others are applied to auxiliary receivers. A digital signal processor weights and combines these primary and secondary beams.

公开(公告)号：US06940914B1

公开(公告)日：2005-09-06

申请号：US09878555

申请日：2001-06-11

申请人： Titus Lo ,  Ruifeng Wang

发明人： Titus Lo ,  Ruifeng Wang

IPC分类号： H04L25/02 ,  H04L27/26 ,  H04L27/28

CPC分类号： H04L27/2662 ,  H04L1/0054 ,  H04L25/0204 ,  H04L25/0236 ,  H04L27/261 ,  H04L27/2647

摘要： A system and method for estimating a channel in a wireless receiver is disclosed. The method preferably applies to a communication system using the OFDM standard. The method comprises receiving a block of “n” transmitted symbols, the symbols including pilot symbols and “d” data symbols, estimating a channel using the pilot symbols to create a channel estimate, choosing a group of “m” strongest symbols from the “d” received symbols, compensating the “m” strongest symbols using the channel estimate to create a group of “m” compensated symbols, re-estimating the channel using the group of “m” compensated symbols and pilot symbols; and either (1) repeating the steps of choosing a group of “m” strongest symbols, compensating the group of “m” strongest symbols and re-estimating the channel, or (2) using a latest channel estimate to compensate all symbols within the block. The system comprises a wireless receiver having an estimator programmed, for example, using DSP or ASIC and imbedded into the wireless system design software for accomplishing the steps set forth according to the method.

摘要翻译： 公开了一种用于估计无线接收机中的信道的系统和方法。 该方法优选地应用于使用OFDM标准的通信系统。 该方法包括：接收“n”个发送符号的块，该符号包括导频符号和“d”个数据符号，使用导频符号估计信道以创建信道估计，从​​“ d“个接收到的符号，使用信道估计补偿”m“个最强符号以创建一组”m“个补偿符号，使用”m“个补偿符号和导频符号组重新估计信道; 并且（1）重复选择一组“m”个最强符号的步骤，补偿“m”个最强符号组并重新估计该信道，或者（2）使用最新信道估计来补偿该“ 块。 该系统包括具有例如使用DSP或ASIC编程并且嵌入无线系统设计软件中的估计器的无线接收器，用于完成根据该方法阐述的步骤。