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1. 发明授权

US08705443B2 System and method for reduced feedback in multiuser multiple input, multiple output wireless communications 有权
标题翻译：用于多用户多输入，多输出无线通信的减少反馈的系统和方法
公开(公告)号：US08705443B2
公开(公告)日：2014-04-22
申请号：US12711654
申请日：2010-02-24
申请人： Yang Tang , Pengfei Xia , Zhigang Rong
发明人： Yang Tang , Pengfei Xia , Zhigang Rong
IPC分类号： H04W4/00 , H04L12/16 , H04Q11/00 , H04L27/00
CPC分类号： H04L25/0248 , H04B7/0452 , H04B7/0663 , H04L25/0204
摘要： A system and method for reduced feedback in MU-MIMO communications is provided. A method for transmitter operations includes transmitting a pilot signal, receiving channel information feedback from a set of K communications devices served by a transmitter, where K is a non-negative integer value and K≧2, selecting M communications devices out of the set of K communications devices, where M is a non-negative integer value and M≦K, computing a precoder for each of the M selected communications devices based on the channel information feedback, and simultaneously transmitting information to the M selected communications devices. The channel information feedback includes partial information for a communications channel between the transmitter and a communications device, the selecting being based on the channel information feedback, and the information transmitted to each communications device in the M selected communications devices being precoded using a computed precoder associated with the communications device.
摘要翻译：提供了一种用于MU-MIMO通信中的减少反馈的系统和方法。一种用于发射机操作的方法包括：传输导频信号，从由发射机服务的一组K个通信设备接收信道信息反馈，其中K是非负整数值，K≥2，选择M个通信设备 K通信设备，其中M是非负整数值，并且M＆NlE; K，基于信道信息反馈计算M个选择的通信设备中的每一个的预编码器，并且同时向M个选择的通信设备发送信息。信道信息反馈包括用于发射机和通信设备之间的通信信道的部分信息，所述选择基于信道信息反馈，并且传输到M个选择的通信设备中的每个通信设备的信息使用计算的预编码器相关联进行预编码与通信设备。

2. 发明申请

US20100265841A1 System and Method for Precoding Codebook Adaptation with Low Feedback Overhead 有权
标题翻译：低反馈开销预编码码本适应的系统和方法
公开(公告)号：US20100265841A1
公开(公告)日：2010-10-21
申请号：US12760038
申请日：2010-04-14
申请人： Zhigang Rong , Pengfei Xia , Yang Tang
发明人： Zhigang Rong , Pengfei Xia , Yang Tang
IPC分类号： H04L12/26
CPC分类号： H04L43/08 , H04B7/0417 , H04B7/0639 , H04L5/0023 , H04L25/0224 , H04L41/0816
摘要： A system and method for wireless communications with codebook adaptation with low feedback overhead are provided. A method for controller operations includes receiving a first channel information from a communications device, estimating channel statistics based on the first channel information, adapting a codebook using the channel statistics, and receiving a second channel information from the communications device. The method also includes constructing a precoding matrix from the second channel information and the adapted codebook, and transmitting information precoded by the precoding matrix to the communications device.
摘要翻译：提供了一种用于具有低反馈开销的码本适配的无线通信的系统和方法。一种用于控制器操作的方法包括从通信设备接收第一信道信息，基于第一信道信息估计信道统计，使用信道统计调整码本，以及从通信设备接收第二信道信息。该方法还包括从第二信道信息和适应码本构建预编码矩阵，以及将通过预编码矩阵预编码的信息发送到通信设备。

3. 发明授权

US08600308B2 Channel state information feedback for coordinated multiple points transmission 有权
标题翻译：通道状态信息反馈用于协调多点传输
公开(公告)号：US08600308B2
公开(公告)日：2013-12-03
申请号：US12817003
申请日：2010-06-16
申请人： Yang Tang , Pengfei Xia , Zhigang Rong
发明人： Yang Tang , Pengfei Xia , Zhigang Rong
IPC分类号： H04B17/00 , H04B1/00 , H04B7/00 , H04B7/02 , H04L27/00 , H04L27/28 , H04L1/02 , H04K1/10
CPC分类号： H04L5/0023 , H04B7/022 , H04B7/024 , H04B7/0639 , H04B7/066 , H04L1/0028 , H04L25/0204 , H04L25/0228 , H04L25/0246 , H04L25/03343 , H04L2025/03426 , H04L2025/03808
摘要： In accordance with an embodiment of the present invention, a method for providing wireless communication system includes receiving a reference signal from each base station of a plurality of base stations serving a mobile station. The received reference signals are measured to compute a single cell feedback matrix and a combining matrix for each channel between the plurality of base stations and the mobile station. A channel state information is generated having information about the combining and the single cell feedback matrices. The channel state information is transmitted to the plurality of base stations.
摘要翻译：根据本发明的实施例，一种用于提供无线通信系统的方法包括从为移动台服务的多个基站中的每个基站接收参考信号。测量接收到的参考信号以计算单个小区反馈矩阵和用于多个基站和移动台之间的每个信道的组合矩阵。生成具有关于组合信息和单个单元反馈矩阵的信息的信道状态信息。信道状态信息被发送到多个基站。

4. 发明授权

US08243610B2 System and method for precoding codebook adaptation with low feedback overhead 有权
标题翻译：具有低反馈开销的用于预编码码本适配的系统和方法
公开(公告)号：US08243610B2
公开(公告)日：2012-08-14
申请号：US12760038
申请日：2010-04-14
申请人： Zhigang Rong , Pengfei Xia , Yang Tang
发明人： Zhigang Rong , Pengfei Xia , Yang Tang
IPC分类号： H04L12/26
CPC分类号： H04L43/08 , H04B7/0417 , H04B7/0639 , H04L5/0023 , H04L25/0224 , H04L41/0816
摘要： A system and method for wireless communications with codebook adaptation with low feedback overhead are provided. A method for controller operations includes receiving a first channel information from a communications device, estimating channel statistics based on the first channel information, adapting a codebook using the channel statistics, and receiving a second channel information from the communications device. The method also includes constructing a precoding matrix from the second channel information and the adapted codebook, and transmitting information precoded by the precoding matrix to the communications device.
摘要翻译：提供了一种用于具有低反馈开销的码本适配的无线通信的系统和方法。一种用于控制器操作的方法包括从通信设备接收第一信道信息，基于第一信道信息估计信道统计，使用信道统计调整码本，以及从通信设备接收第二信道信息。该方法还包括从第二信道信息和适应码本构建预编码矩阵，以及将通过预编码矩阵预编码的信息发送到通信设备。

5. 发明申请

US20100322351A1 Channel State Information Feedback for Coordinated Multiple Points Transmission 有权
标题翻译：用于协调多点传输的信道状态信息反馈
公开(公告)号：US20100322351A1
公开(公告)日：2010-12-23
申请号：US12817003
申请日：2010-06-16
申请人： Yang Tang , Pengfei Xia , Zhigang Rong
发明人： Yang Tang , Pengfei Xia , Zhigang Rong
IPC分类号： H04L27/00 , H04L12/26 , H04B7/00
CPC分类号： H04L5/0023 , H04B7/022 , H04B7/024 , H04B7/0639 , H04B7/066 , H04L1/0028 , H04L25/0204 , H04L25/0228 , H04L25/0246 , H04L25/03343 , H04L2025/03426 , H04L2025/03808
摘要： In accordance with an embodiment of the present invention, a method for providing wireless communication system includes receiving a reference signal from each base station of a plurality of base stations serving a mobile station. The received reference signals are measured to compute a single cell feedback matrix and a combining matrix for each channel between the plurality of base stations and the mobile station. A channel state information is generated having information about the combining and the single cell feedback matrices. The channel state information is transmitted to the plurality of base stations.
摘要翻译：根据本发明的实施例，一种用于提供无线通信系统的方法包括从为移动台服务的多个基站中的每个基站接收参考信号。测量接收到的参考信号以计算单个小区反馈矩阵和用于多个基站和移动台之间的每个信道的组合矩阵。生成具有关于组合信息和单个单元反馈矩阵的信息的信道状态信息。信道状态信息被发送到多个基站。

6. 发明申请

US20100238913A1 Adaptive Precoding Codebooks for Wireless Communications 有权
标题翻译：用于无线通信的自适应预编码码书
公开(公告)号：US20100238913A1
公开(公告)日：2010-09-23
申请号：US12621288
申请日：2009-11-18
申请人： Pengfei Xia , Yang Tang , Zhigang Rong
发明人： Pengfei Xia , Yang Tang , Zhigang Rong
IPC分类号： H04B7/216 , H04L1/02
CPC分类号： H04L25/03343 , H04B7/0482 , H04B7/0626 , H04L1/0001 , H04L2025/03426 , H04L2025/03605 , H04L2025/03808
摘要： Adaptive precoding codebooks are described. In one embodiment, the method of wireless communication includes reading at least a rank-2 baseline codebook having codewords representing precoding matrices. An adaptive codebook is generated by multiplying a first column of the codeword with a first transform matrix calculated from a channel correlation matrix, and multiplying a second column of the codeword with a second transform matrix calculated from the channel correlation matrix. The first and the second transform matrices are orthogonal.
摘要翻译：描述了自适应预编码码本。在一个实施例中，无线通信的方法包括读取至少具有表示预编码矩阵的码字的2级基线码本。通过将码字的第一列与从信道相关矩阵计算的第一变换矩阵相乘，并将码字的第二列与从信道相关矩阵计算的第二变换矩阵相乘来生成自适应码本。第一和第二变换矩阵是正交的。

7. 发明申请

US20110103493A1 System and Method for Wireless Communications with Adaptive Codebooks 审中-公开
标题翻译：具有自适应码本的无线通信系统和方法
公开(公告)号：US20110103493A1
公开(公告)日：2011-05-05
申请号：US12914794
申请日：2010-10-28
申请人： Pengfei Xia , Yang Tang , Linhong Chen , Zhigang Rong
发明人： Pengfei Xia , Yang Tang , Linhong Chen , Zhigang Rong
IPC分类号： H04L27/00
CPC分类号： H04B7/0639 , H04B7/0632 , H04B7/065 , H04L1/0009 , H04L1/0019 , H04L1/0026
摘要： A system and method for wireless communications with adaptive codebooks are provided. A method for communications node operations includes estimating a communications channel between the communications node and a controller serving the communications node, quantizing the estimated communications channel based on an adapted codebook, estimating statistics of the communications channel, transmitting a first indicator of the quantized estimated communications channel, adjusting the adapted codebook based on the estimated statistics, and receiving a transmission from the controller. The transmission is precoded based on the first indicator of the quantized estimated communications channel.
摘要翻译：提供了一种用于与自适应码本进行无线通信的系统和方法。一种用于通信节点操作的方法包括：估计通信节点和服务于通信节点的控制器之间的通信信道，基于经适配的码本量化估计的通信信道，估计通信信道的统计，发送量化的估计通信的第一指示符信道，基于估计的统计调整适应码本，以及从控制器接收传输。基于量化的估计通信信道的第一指示符对传输进行预编码。

8. 发明授权

US08675627B2 Adaptive precoding codebooks for wireless communications 有权
标题翻译：用于无线通信的自适应预编码码书
公开(公告)号：US08675627B2
公开(公告)日：2014-03-18
申请号：US12621288
申请日：2009-11-18
申请人： Pengfei Xia , Yang Tang , Zhigang Rong
发明人： Pengfei Xia , Yang Tang , Zhigang Rong
IPC分类号： H04B7/216
CPC分类号： H04L25/03343 , H04B7/0482 , H04B7/0626 , H04L1/0001 , H04L2025/03426 , H04L2025/03605 , H04L2025/03808
摘要： Adaptive precoding codebooks are described. In one embodiment, the method of wireless communication includes reading at least a rank-2 baseline codebook having codewords representing precoding matrices. An adaptive codebook is generated by multiplying a first column of the codeword with a first transform matrix calculated from a channel correlation matrix, and multiplying a second column of the codeword with a second transform matrix calculated from the channel correlation matrix. The first and the second transform matrices are orthogonal.
摘要翻译：描述了自适应预编码码本。在一个实施例中，无线通信的方法包括读取至少具有表示预编码矩阵的码字的2级基线码本。通过将码字的第一列与从信道相关矩阵计算的第一变换矩阵相乘，并将码字的第二列与从信道相关矩阵计算的第二变换矩阵相乘来生成自适应码本。第一和第二变换矩阵是正交的。

9. 发明授权

US08649456B2 System and method for channel information feedback in a wireless communications system 有权
标题翻译：无线通信系统中信道信息反馈的系统和方法
公开(公告)号：US08649456B2
公开(公告)日：2014-02-11
申请号：US12722450
申请日：2010-03-11
申请人： Pengfei Xia , Yang Tang , Zhigang Rong , Linhong Chen
发明人： Pengfei Xia , Yang Tang , Zhigang Rong , Linhong Chen
IPC分类号： H04L1/02
CPC分类号： H04B7/0626 , H04B7/0417 , H04B7/043 , H04B7/0434 , H04B7/0478 , H04B7/0482 , H04B7/0639 , H04B7/065 , H04B7/0663 , H04L1/0026 , H04L1/0029 , H04L1/06 , H04L25/0204 , H04L25/021 , H04L25/0224 , H04L25/0391
摘要： A system and method for channel information feedback in a wireless communications system is provided. A method for communications device operation includes receiving a pilot transmitted by a controller, computing a channel estimate for a channel between the controller and a communications device, the computing based on the pilot, computing a channel correlation matrix for the channel based on the channel estimate, and transmitting a reduced rank representation of the channel correlation matrix to the controller as a first feedback information. The method also includes adapting a first codebook based on the reduced rank representation of the channel correlation matrix, computing a representation of the channel using the adapted codebook, transmitting the representation of the channel as a second feedback information, and receiving a transmission beamformed based on the first feedback information and the second feedback information.
摘要翻译：提供了一种用于无线通信系统中的信道信息反馈的系统和方法。一种用于通信设备操作的方法包括接收由控制器发送的导频，计算控制器和通信设备之间的信道的信道估计，基于导频的计算，基于信道估计计算信道的信道相关矩阵并且将作为第一反馈信息的信道相关矩阵的缩减秩表示发送到控制器。该方法还包括基于信道相关矩阵的降级表示来适配第一码本，使用适配码本计算信道的表示，将该信道的表示作为第二反馈信息发送，以及接收基于第一反馈信息和第二反馈信息。

10. 发明申请

US20100232525A1 System and Method for Channel Information Feedback in a Wireless Communications System 有权
标题翻译：无线通信系统中信道反馈的系统和方法
公开(公告)号：US20100232525A1
公开(公告)日：2010-09-16
申请号：US12722450
申请日：2010-03-11
申请人： Pengfei Xia , Yang Tang , Zhigang Rong , Linhong Chen
发明人： Pengfei Xia , Yang Tang , Zhigang Rong , Linhong Chen
IPC分类号： H04L27/00
CPC分类号： H04B7/0626 , H04B7/0417 , H04B7/043 , H04B7/0434 , H04B7/0478 , H04B7/0482 , H04B7/0639 , H04B7/065 , H04B7/0663 , H04L1/0026 , H04L1/0029 , H04L1/06 , H04L25/0204 , H04L25/021 , H04L25/0224 , H04L25/0391
摘要： A system and method for channel information feedback in a wireless communications system is provided. A method for communications device operation includes receiving a pilot transmitted by a controller, computing a channel estimate for a channel between the controller and a communications device, the computing based on the pilot, computing a channel correlation matrix for the channel based on the channel estimate, and transmitting a reduced rank representation of the channel correlation matrix to the controller as a first feedback information. The method also includes adapting a first codebook based on the reduced rank representation of the channel correlation matrix, computing a representation of the channel using the adapted codebook, transmitting the representation of the channel as a second feedback information, and receiving a transmission beamformed based on the first feedback information and the second feedback information
摘要翻译：提供了一种用于无线通信系统中的信道信息反馈的系统和方法。一种用于通信设备操作的方法包括接收由控制器发送的导频，计算控制器和通信设备之间的信道的信道估计，基于导频的计算，基于信道估计计算信道的信道相关矩阵并且将作为第一反馈信息的信道相关矩阵的缩减秩表示发送到控制器。该方法还包括基于信道相关矩阵的降级表示来适配第一码本，使用适配码本计算信道的表示，将该信道的表示作为第二反馈信息发送，以及接收基于第一反馈信息和第二反馈信息

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