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1. 发明授权

US07359470B2 Minimizing feedback rate for channel state information in MIMO systems 有权
标题翻译：最小化MIMO系统中信道状态信息的反馈速率
公开(公告)号：US07359470B2
公开(公告)日：2008-04-15
申请号：US10939284
申请日：2004-09-10
申请人： Andreas F. Molisch , Jianxuan Du , Ye Li , Daqing Gu , Jinyun Zhang
发明人： Andreas F. Molisch , Jianxuan Du , Ye Li , Daqing Gu , Jinyun Zhang
IPC分类号： H04L7/02
CPC分类号： H04L1/0687
摘要： A method minimizes a rate for feeding back channel state information from a receiver to a transmitter in a multi-input, multi-output communications systems. A temporal autocorrelation function of the channel between the transmitter and the receiver is determined. A spatial covariance information is estimated of the channel. Then, the minimum rate for feeding back channel state information from the receiver to the transmitter is based on actual channel state information and the estimated spatial covariance information and the temporal autocorrelation function.
摘要翻译：一种方法使在多输入多输出通信系统中将信道状态信息从接收机反馈到发射机的速率最小化。确定发射机和接收机之间的信道的时间自相关函数。估计通道的空间协方差信息。然后，从接收机向发射机反馈信道状态信息的最小速率基于实际信道状态信息和估计的空间协方差信息和时间自相关函数。

2. 发明申请

US20050268202A1 Quasi-block diagonal low-density parity-check code for MIMO systems 审中-公开
标题翻译：用于MIMO系统的准块对角低密度奇偶校验码
公开(公告)号：US20050268202A1
公开(公告)日：2005-12-01
申请号：US10857042
申请日：2004-05-28
申请人： Andreas Molisch , Daqing Gu , Jinyun Zhang , Jianxuan Du , Ye Li
发明人： Andreas Molisch , Daqing Gu , Jinyun Zhang , Jianxuan Du , Ye Li
IPC分类号： H04J99/00 , H04L1/00 , H04L1/06 , G11C29/00
CPC分类号： H04L1/005 , H04L1/0057 , H04L1/0618
摘要： A method codes multiple data streams in multiple-input, multiple-output communications systems. In a transmitter, an input bitstream is encoded as codewords b in multiple layers. Each layer is modulated. A quasi-block diagonal, low-density parity-check code is applied to each layer, the quasi-block diagonal, parity-check code being a matrix H, the matrix H including one row of blocks for each subcode, and one row of blocks for each layer such that Hb=0 for any valid codeword. The layers are then forwarded to transmit antennas as a transmitted signal x.
摘要翻译：一种方法在多输入多输出通信系统中对多个数据流进行编码。在发射机中，输入比特流被编码为多层的码字b。每层调制。准块对角线，低密度奇偶校验码被应用于每个层，准块对角线，奇偶校验码是矩阵H，矩阵H包括每个子码的一行块，以及一行每个层的块，使得对于任何有效的码字，Hb = 0。然后将层转发到发射天线作为发射信号x。

3. 发明申请

US20090290563A1 Antenna/Beam Selection Training in MIMO Wireless LANs with Different Sounding Frames 有权
标题翻译：具有不同探测帧的MIMO无线局域网天线/光束选择训练
公开(公告)号：US20090290563A1
公开(公告)日：2009-11-26
申请号：US12293458
申请日：2006-03-30
申请人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
发明人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
IPC分类号： H04W84/12 , H04B7/02
CPC分类号： H04B7/0691 , H04B7/0608 , H04B7/061 , H04B7/0626 , H04B7/0634 , H04B7/0636 , H04B7/0695 , H04B7/0874 , H04B7/088 , H04W84/12
摘要： A method selects antennas in a multiple-input, multiple-output (MIMO) wireless local area network (WLAN) that includes a plurality of stations, and each station includes a set of antennas. Plural consecutive packets, received at a station, include plural consecutive sounding packets. Each sounding packet corresponds to a different subset of the set of antennas, and at least one of the plural consecutive packets includes a high throughput (HT) control field including a signal to initiate antenna selection and a number N indicative of a number of sounding packets which follow the at least one packet including the HT control field and which are to be used for antenna selection. A channel matrix is estimated based on a characteristic of the channel as indicated by the received N sounding packets, and a subset of antennas is selected according to the channel matrix. Station and computer program product embodiments include similar features.
摘要翻译：一种方法选择包括多个站的多输入多输出（MIMO）无线局域网（WLAN）中的天线，并且每个站包括一组天线。在站处接收的多个连续分组包括多个连续的探测分组。每个探测分组对应于该组天线的不同子集，并且多个连续分组中的至少一个分组包括高吞吐量（HT）控制字段，包括用于发起天线选择的信号和指示多个探测分组的数量N 其遵循至少一个包括HT控制字段并将用于天线选择的分组。基于由接收的N个探测分组指示的信道的特性来估计信道矩阵，并且根据信道矩阵选择天线的子集。站和计算机程序产品实施例包括类似的特征。

4. 发明申请

US20080247370A1 Training Signals for Selecting Antennas and Beams in Mimo Wireless Lans 有权
标题翻译：用于在Mimo无线蓝牙中选择天线和光束的训练信号
公开(公告)号：US20080247370A1
公开(公告)日：2008-10-09
申请号：US12088285
申请日：2005-09-30
申请人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
发明人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
IPC分类号： H04Q7/24
CPC分类号： H04B7/0691 , H04B7/024 , H04B7/0695 , H04B7/0851 , H04B7/0874 , H04B7/088
摘要： A computer implemented method selects antennas in a multiple-input, multiple-output wireless local area network that includes multiple stations, and each station includes a set of antennas. Multiple consecutively transmitted sounding packets are received in a station. Each sounding packet corresponds to a different subset of the set of antennas. A channel matrix is estimated from the multiple consecutively transmitted sounding packets, and a subset of antennas is selected according to the channel matrix.
摘要翻译：计算机实现的方法选择包括多个站的多输入多输出无线局域网中的天线，并且每个站包括一组天线。在站中接收到多个连续发送的探测包。每个探测包对应于该组天线的不同子集。从多个连续发送的探测分组估计信道矩阵，并根据信道矩阵选择天线子集。

5. 发明授权

US08284686B2 Antenna/beam selection training in MIMO wireless LANS with different sounding frames 有权
标题翻译：天线/波束选择训练在具有不同声音帧的MIMO无线LAN中
公开(公告)号：US08284686B2
公开(公告)日：2012-10-09
申请号：US12293458
申请日：2006-03-30
申请人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
发明人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
IPC分类号： H04W4/00
CPC分类号： H04B7/0691 , H04B7/0608 , H04B7/061 , H04B7/0626 , H04B7/0634 , H04B7/0636 , H04B7/0695 , H04B7/0874 , H04B7/088 , H04W84/12
摘要： A method selects antennas in a multiple-input, multiple-output (MIMO) wireless local area network (WLAN) that includes a plurality of stations, and each station includes a set of antennas. Plural consecutive packets, received at a station, include plural consecutive sounding packets. Each sounding packet corresponds to a different subset of the set of antennas, and at least one of the plural consecutive packets includes a high throughput (HT) control field including a signal to initiate antenna selection and a number N indicative of a number of sounding packets which follow the at least one packet including the HT control field and which are to be used for antenna selection. A channel matrix is estimated based on a characteristic of the channel as indicated by the received N sounding packets, and a subset of antennas is selected according to the channel matrix. Station and computer program product embodiments include similar features.
摘要翻译：一种方法选择包括多个站的多输入多输出（MIMO）无线局域网（WLAN）中的天线，并且每个站包括一组天线。在站处接收的多个连续分组包括多个连续的探测分组。每个探测分组对应于该组天线的不同子集，并且多个连续分组中的至少一个分组包括高吞吐量（HT）控制字段，包括用于发起天线选择的信号和指示多个探测分组的数量N 其遵循至少一个包括HT控制字段并将用于天线选择的分组。基于由接收的N个探测分组指示的信道的特性来估计信道矩阵，并且根据信道矩阵选择天线的子集。站和计算机程序产品实施例包括类似的特征。

6. 发明授权

US08514815B2 Training signals for selecting antennas and beams in MIMO wireless LANs 有权
标题翻译：训练信号用于在MIMO无线局域网中选择天线和波束
公开(公告)号：US08514815B2
公开(公告)日：2013-08-20
申请号：US12088285
申请日：2005-09-30
申请人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
发明人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
IPC分类号： H04W4/00
CPC分类号： H04B7/0691 , H04B7/024 , H04B7/0695 , H04B7/0851 , H04B7/0874 , H04B7/088
摘要： A computer implemented method selects antennas in a multiple-input, multiple-output wireless local area network that includes multiple stations, and each station includes a set of antennas. Multiple consecutively transmitted sounding packets are received in a station. Each sounding packet corresponds to a different subset of the set of antennas. A channel matrix is estimated from the multiple consecutively transmitted sounding packets, and a subset of antennas is selected according to the channel matrix.
摘要翻译：计算机实现的方法选择包括多个站的多输入多输出无线局域网中的天线，并且每个站包括一组天线。在站中接收到多个连续发送的探测包。每个探测包对应于该组天线的不同子集。从多个连续发送的探测分组估计信道矩阵，并根据信道矩阵选择天线子集。

7. 发明授权

US08374096B2 Method for selecting antennas and beams in MIMO wireless LANs 有权
标题翻译： MIMO无线局域网中选择天线和波束的方法
公开(公告)号：US08374096B2
公开(公告)日：2013-02-12
申请号：US12094441
申请日：2005-11-21
申请人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
发明人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
IPC分类号： H04W4/00
CPC分类号： H04B7/0417 , H04B7/0691 , H04B7/0874 , H04L1/0025 , H04L5/0023
摘要： A computer implemented method selects antennas in a multiple-input, multiple-output wireless local area network that includes multiple stations, and each station includes a set of antennas. Multiple consecutively transmitted sounding packets are received in a station. Each sounding packet corresponds to a different subset of the set of antennas. A channel matrix is estimated from the multiple consecutively transmitted sounding packets. A frame including a high throughput (HT) control field is sent to initiate a selecting of antennas, and a subset of antennas is selected according to the channel matrix.
摘要翻译：计算机实现的方法选择包括多个站的多输入多输出无线局域网中的天线，并且每个站包括一组天线。在站中接收到多个连续发送的探测包。每个探测包对应于该组天线的不同子集。从多个连续发送的探测包估计信道矩阵。发送包括高吞吐量（HT）控制字段的帧以发起天线的选择，并且根据信道矩阵选择天线子集。

8. 发明授权

US07917107B2 Antenna selection with RF imbalance 有权
标题翻译：天线选择与RF不平衡
公开(公告)号：US07917107B2
公开(公告)日：2011-03-29
申请号：US11387252
申请日：2006-03-23
申请人： Daqing Gu , Andreas F. Molisch , Jinyun Zhang , Hongyuan Zhang , Dong Wang
发明人： Daqing Gu , Andreas F. Molisch , Jinyun Zhang , Hongyuan Zhang , Dong Wang
IPC分类号： H04B7/08
CPC分类号： H04B7/0874 , H04B7/061 , H04B7/0691 , H04L25/0242
摘要： A method for selecting antennas in a multiple-input, multiple-output wireless communications network that includes multiple stations is presented. Each station includes a set of transmit RF chains and a set of receive RF chains, and each RF chain is connectable to a set of antennas. A first station transmits a training frame for each possible subset of the set of antennas, and the set of transmit RF chains are connected to the subset of antennas according to a connection mapping rule while transmitting each training frame. A subchannel matrix is estimated in a second station for each frame. The subchannel matrices are combined to obtain a complete channel matrix. A particular subset of the antennas is selected according to the complete channel matrix. The set of transmit RF chains is connected to the selected particular subset of antennas to transmit data from the first station to the second station.
摘要翻译：提出了一种在包含多个站的多输入，多输出无线通信网络中选择天线的方法。每个站包括一组发射RF链和一组接收RF链，并且每个RF链可连接到一组天线。第一台站发送针对该组天线的每个可能子集的训练帧，并且该组发射RF链根据连接映射规则连接到天线子集，同时传输每个训练帧。在每个帧的第二站中估计子信道矩阵。子信道矩阵被组合以获得完整的信道矩阵。根据完整的信道矩阵来选择天线的特定子集。发射RF链的集合被连接到所选择的特定天线子集，以将数据从第一站传送到第二站。

9. 发明申请

US20090086690A1 Method for Selecting Antennas and Beams in MIMO Wireless LANs 有权
标题翻译： MIMO无线局域网中选择天线和光束的方法
公开(公告)号：US20090086690A1
公开(公告)日：2009-04-02
申请号：US12094441
申请日：2005-11-21
申请人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
发明人： Daqing Gu , Hongyuan Zhang , Jinyun Zhang , Andreas F. Molisch
IPC分类号： H04W84/12
CPC分类号： H04B7/0417 , H04B7/0691 , H04B7/0874 , H04L1/0025 , H04L5/0023
摘要： A computer implemented method selects antennas in a multiple-input, multiple-output wireless local area network that includes multiple stations, and each station includes a set of antennas. Multiple consecutively transmitted sounding packets are received in a station. Each sounding packet corresponds to a different subset of the set of antennas. A channel matrix is estimated from the multiple consecutively transmitted sounding packets. A frame including a high throughput (HT) control field is sent to initiate a selecting of antennas, and a subset of antennas is selected according to the channel matrix.
摘要翻译：计算机实现的方法选择包括多个站的多输入多输出无线局域网中的天线，并且每个站包括一组天线。在站中接收到多个连续发送的探测包。每个探测包对应于该组天线的不同子集。从多个连续发送的探测包估计信道矩阵。发送包括高吞吐量（HT）控制字段的帧以发起天线的选择，并且根据信道矩阵选择天线子集。

10. 发明授权

US07355959B2 Interference suppression for OFDM-based UWB communication 失效
公开(公告)号：US07355959B2
公开(公告)日：2008-04-08
申请号：US10856708
申请日：2004-05-28
申请人： Andreas F. Molisch , Ye Li , Jinyun Zhang
发明人： Andreas F. Molisch , Ye Li , Jinyun Zhang
IPC分类号： H04J11/00
CPC分类号： H04B1/719 , H04L25/022 , H04L25/0224 , H04L27/261
摘要： A method suppresses interference in a time-frequency hopped, ultra wide bandwidth system. Signals corresponding to a transmitted symbol are received. The received signals are frequency demodulated, and a coefficient vector w that minimizes a cost function C ⁡ ( w n ) = 1 ∑ k ⁢ λ  n - k  ⁢ ∑ k ⁢ λ  n - k  ⁢ ⁢  w n H ⁢ x k - c k  2 , is estimated, where λ is a weighting factor between 0, x is a vector representing the received signals, H is a frequency response of a channel used to transmit the symbol, and c is a known training symbol. A coefficient vector, ŵn={circumflex over (R)}n−1{circumflex over (d)}n, is determined, where a correlation matrix for the received signals is R ^ n = 1 ∑ k ⁢ λ  n - k  ⁢ ∑ k ⁢ λ  n - k  ⁢ ⁢ x k ⁢ x k H , and an estimate of a crosscorrelation is d ^ n = 1 ∑ k ⁢ λ  n - k  ⁢ ∑ k ⁢ λ  n - k  ⁢ ⁢ x k ⁢ c k * . The received signals are then combined according to c ^ n = 1 C ⁡ ( w ^ n ) ⁢ w ^ n H ⁢ x n = 1 1 - w ^ n H ⁢ ⁢ d ^ n ⁢ w ^ n H ⁢ x n .

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