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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。
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42.发明授权Randomly changing pulse polarity and phase in an UWB signal for power spectrum density shaping 有权随机改变UWB信号中的脉冲极性和相位，用于功率谱密度整形公开(公告)号：US07298792B2
公开(公告)日：2007-11-20
申请号：US11079305
申请日：2005-03-14
IPC分类号： H04L27/04
CPC分类号： H04B1/719 , H04B1/71632 , H04B1/7176 , H04B2001/6908 , H04L25/03866
摘要： A method and system eliminate spectral lines and shapes the power spectral density of an ultra bandwidth signal. First, a train of non-periodic pulses is generated. The non-periodic pulses are then modulated in time according to uncorrelated symbols. A polarity of the non-periodic pulses is inverted randomly before transmitting the non-periodic pulses as an ultra wide bandwidth signal to eliminate spectral lines and to shape a power spectral density of the ultra wide bandwidth signal.
摘要翻译： 一种方法和系统消除了光谱线，并形成了超宽带信号的功率谱密度。 首先，产生一系列非周期脉冲。 然后根据不相关的符号在时间上调制非周期脉冲。 在将非周期性脉冲作为超宽带宽信号发送之前，非周期性脉冲的极性被反转，以消除谱线并形成超宽带宽信号的功率谱密度。
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公开(公告)号：US08073071B2
公开(公告)日：2011-12-06
申请号：US12239491
申请日：2008-09-26
IPC分类号： H04B7/02
CPC分类号： H04L1/0606 , H04L1/0662 , H04L1/1816
摘要： A method transmits a block of symbols in a multiple-input multiple-output (MIMO) network including a transmitter having a set of transmit antennas and a receiver having a set of receive antennas. A block of symbols is coded with a first code to generate a first block, which is transmitted and received. If a decoding of the first block is incorrect, then block of symbols is coded with the first code and then a second code different than the first code to generate a second block. The second block is transmitted, received and combined with the first block to recover the block of symbols.
摘要翻译： 一种方法在包括具有一组发射天线的发射机和具有一组接收天线的接收机的多输入多输出（MIMO）网络中发送符号块。 用第一代码编码符号块以产生被发送和接收的第一块。 如果第一块的解码不正确，则使用第一代码然后与第一代码不同的第二代码对符号块进行编码以生成第二块。 第二块被发送，接收并与第一块组合以恢复符号块。
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公开(公告)号：US07684337B2
公开(公告)日：2010-03-23
申请号：US11333665
申请日：2006-01-17
CPC分类号： H04W40/06 , H04B7/026 , H04B7/0408 , H04W52/46 , Y02D70/322 , Y02D70/442 , Y02D70/444
摘要： A method and system for communicating information in a cooperative relay network of wireless nodes. The wireless nodes including a source, a set of relays, and a destination. Channel state information for each channel between a particular relay of the set of relays and the destination is estimated. A subset of the relays is selected based on the channel state information. The channel state information is fed back to the subset of relays. The source node can then broadcasting data packets from the source to the subset of relays, and the subset of relays forward coherently the data packets from the subset of relays to the destination using beamforming based on the channel state information, while adjusting power to minimize a total energy consumption in the network.
摘要翻译： 一种用于在无线节点的协作中继网络中传送信息的方法和系统。 无线节点包括源，一组中继和目的地。 估计该组继电器的特定继电器和目的地之间的每个通道的通道状态信息。 基于信道状态信息来选择继电器的子集。 信道状态信息反馈给继电器的子集。 源节点然后可以从源到广播数据分组到中继的子集，并且继电器的子集基于信道状态信息使用波束形成将来自中继的子集的数据分组向前转发到目的地，同时调整功率以最小化 网络总能耗。
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公开(公告)号：US20090225720A1
公开(公告)日：2009-09-10
申请号：US12358619
申请日：2009-01-23
申请人： Andreas F. Molisch , Zhifeng Tao , Philip V. Orlik , Jinyun Zhang , Lun Dong , Lingjia Liu , Toshiyuki Kuze
发明人： Andreas F. Molisch , Zhifeng Tao , Philip V. Orlik , Jinyun Zhang , Lun Dong , Lingjia Liu , Toshiyuki Kuze
CPC分类号： H04L25/0226 , H04B7/022 , H04B7/0495
摘要： A method estimates channels in a wireless cooperative cellular network including a set of base stations, and each base station communicates cooperatively with a set of mobile stations. A first sounding signal including a first midamble is transmitted from a first base station to a first mobile station. A second sounding signal including a second midamble is transmitted simultaneously from a second base station to the first mobile station, wherein the first and second midamble are disjoint in time, and wherein the first and second midambles are used to estimate the channels between the first base station and the first mobile station, and the second base station and the first mobile station, respectively.
摘要翻译： 一种方法估计包括一组基站的无线协作蜂窝网络中的信道，并且每个基站与一组移动台协作通信。 包括第一中间码的第一探测信号从第一基站发射到第一移动站。 包括第二中间码的第二探测信号从第二基站同时发送到第一移动站，其中第一和第二中间码在时间上是不相交的，并且其中第一和第二中间码被用于估计第一基站 站和第一移动站，第二基站和第一移动站。
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公开(公告)号：US20090180568A1
公开(公告)日：2009-07-16
申请号：US12239491
申请日：2008-09-26
IPC分类号： H04B7/02
CPC分类号： H04L1/0606 , H04L1/0662 , H04L1/1816
摘要： A method transmits a block of symbols in a multiple-input multiple-output (MIMO) network including a transmitter having a set of transmit antennas and a receiver having a set of receive antennas. A block of symbols is coded with a first code to generate a first block, which is transmitted and received. If a decoding of the first block is incorrect, then block of symbols is coded with the first code and then a second code different than the first code to generate a second block. The second block is transmitted, received and combined with the first block to recover the block of symbols.
摘要翻译： 一种方法在包括具有一组发射天线的发射机和具有一组接收天线的接收机的多输入多输出（MIMO）网络中发送符号块。 用第一代码编码符号块以产生被发送和接收的第一块。 如果第一块的解码不正确，则使用第一代码然后与第一代码不同的第二代码对符号块进行编码以生成第二块。 第二块被发送，接收并与第一块组合以恢复符号块。
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47.发明申请公开(公告)号：US20090016312A1
公开(公告)日：2009-01-15
申请号：US11777356
申请日：2007-07-13
申请人： Zhifeng Tao , Chun Nie , Neelesh B. Mehta , Andreas F. Molisch , Jinyun Zhang
发明人： Zhifeng Tao , Chun Nie , Neelesh B. Mehta , Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04B7/208
CPC分类号： H04B7/0628 , H04B7/0404 , H04B7/0413 , H04B7/0691 , H04B7/0874 , H04B7/0888 , H04B17/309
摘要： A method selects antennas in an OFDMA network. A channel state of a downlink is measured using a downlink subframe received in a mobile station from a base station. A channel state of an uplink is measured using an uplink subframe received in the base station from the mobile station. Next, the method compares the channel states to determine whether the downlink and the uplink are reciprocal or not. The mobile station can perform receive antenna selection based on the quality of the downlink channel state. The mobile station can also perform transmit antenna selection when instructed by the base station.
摘要翻译： 一种方法选择OFDMA网络中的天线。 使用从基站在移动台中接收的下行链路子帧来测量下行链路的信道状态。 使用从移动站在基站中接收的上行链路子帧来测量上行链路的信道状态。 接下来，该方法比较信道状态以确定下行链路和上行链路是否是倒数的。 移动台可以基于下行链路信道状态的质量来执行接收天线选择。 当基站指示时，移动站也可以执行发射天线选择。
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48.发明授权公开(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。
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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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公开(公告)号：US20070293153A1
公开(公告)日：2007-12-20
申请号：US11454568
申请日：2006-06-16
申请人： Andreas F. Molisch , Jinyun Zhang
发明人： Andreas F. Molisch , Jinyun Zhang
IPC分类号： H04B7/00
CPC分类号： H04W64/00 , G01S13/767 , H04B1/7163 , H04B17/27
摘要： A method signals a quality of range estimates in a UWB network. For each range estimate, a confidence level of a range estimate is signaled, a confidence interval for the range estimate is signaled, and a confidence interval scaling factor for the confidence interval is signaled.
摘要翻译： 一种方法用信号通知UWB网络中的距离估计的质量。 对于每个范围估计，用信号通知距离估计的置信水平，用信号通知距离估计的置信区间，并且用信号通知置信区间的置信区间缩放因子。
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