公开(公告)号：US07751506B2

公开(公告)日：2010-07-06

申请号：US11292853

申请日：2005-12-01

申请人： Huaning Niu ,  Chiu Ngo

发明人： Huaning Niu ,  Chiu Ngo

IPC分类号： H03D1/00 ,  H04L27/06

CPC分类号： H04L1/0057 ,  H03M13/1102 ,  H04L1/0045 ,  H04L25/03159 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03605

摘要： A MIMO receiver implements a method for the soft bit metric calculation with linear MIMO detection for LDPC codes, after linear matrix inversion MIMO detection. In the receiver, a detector detects the estimated symbol and the noise variance. Further, a soft metric calculation unit computes the distance between the estimated symbol and the constellation point, and then divides the distance by the noise variance to determine the soft bit metrics.

摘要翻译： 在线性矩阵反演MIMO检测之后，MIMO接收机实现用于LDPC码的线性MIMO检测的软比特度量计算的方法。 在接收机中，检测器检测估计符号和噪声方差。 此外，软度量计算单元计算估计符号和星座点之间的距离，然后将距离除以噪声方差以确定软比特度量。

公开(公告)号：US20100164802A1

公开(公告)日：2010-07-01

申请号：US12317968

申请日：2008-12-31

申请人： Qinghua Li ,  Huaning Niu

发明人： Qinghua Li ,  Huaning Niu

IPC分类号： H01Q3/00

CPC分类号： H04W72/046 ,  H01Q1/246 ,  H01Q3/30 ,  H04B7/0617 ,  H04B7/0695 ,  H04B7/0857 ,  H04B7/088

摘要： In some embodiments a beamforming method is disclosed. The method can include transmitting a beam having a channel defined by a maximum ration transmission vector (MRT) and receiving a first response from a receiver, where the first response has first information such as parameters related to the transmitted beam. Using the parameters and the initial MRT another directional transmission can be made. A similar process can determine a maximum combining ratio for a receiver. Set up communications between the transmitter and the receiver can be reduced by omitting data from transmission that can be acquired by other means such as from memory or calculations. Additional embodiments are also disclosed.

摘要翻译： 在一些实施例中，公开了一种波束形成方法。 该方法可以包括发送具有由最大比率传输向量（MRT）定义的信道并且从接收机接收第一响应的波束，其中第一响应具有诸如与发射波束相关的参数的第一信息。 使用参数和初始MRT可以进行另一个定向传输。 类似的过程可以确定接收机的最大组合比。 可以通过省略来自传输的数据来减少发射机和接收机之间的通信，这些数据可以通过诸如从存储器或计算之类的其他手段获得。 还公开了另外的实施例。

公开(公告)号：US20100162069A1

公开(公告)日：2010-06-24

申请号：US12317112

申请日：2008-12-19

申请人： Huaning Niu ,  Hujun Yin

发明人： Huaning Niu ,  Hujun Yin

IPC分类号： H04L1/08 ,  G06F11/07 ,  G06F11/14

CPC分类号： H04L1/1864 ,  H04L1/08 ,  H04L1/14 ,  H04L1/1812 ,  H04L1/1825 ,  H04L1/1887 ,  H04L1/1896 ,  H04W52/0229 ,  H04W52/0248 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/23

摘要： In a wireless communications network, a wireless device may examine the received signal to determine the strength of the received signal, and also determine the level of interference and noise. If a retransmission is needed due to a message being incorrectly received, these factors may then be processed to estimate whether the probable cause of poor reception is interference from a neighboring network. If such interference is the likely cause, the retransmission may be changed to a different time and/or to different frequencies in a subsequent frame, so that the interference from the neighboring network is less likely to reoccur.

摘要翻译： 在无线通信网络中，无线设备可以检查所接收的信号以确定接收信号的强度，并且还确定干扰和噪声的水平。 如果由于消息被不正确地接收而需要重传，则可以对这些因素进行处理以估计接收不良的可能原因是否是来自相邻网络的干扰。 如果这种干扰是可能的原因，则可以在后续帧中将重传改变为不同的时间和/或不同的频率，使得来自相邻网络的干扰不太可能再次出现。

公开(公告)号：US07627059B2

公开(公告)日：2009-12-01

申请号：US11100239

申请日：2005-04-05

申请人： Huaning Niu ,  Chiu Ngo

发明人： Huaning Niu ,  Chiu Ngo

IPC分类号： H04L27/00

CPC分类号： H04L27/2662 ,  H04L27/2657 ,  H04L27/2675

摘要： A symbol detector for an OFDM receiver determines the correlation of corresponding samples of at least two received preamble symbol samples, one of the samples delayed a predetermined duration with respect to the other; determines a timing metric based on the correlation results; detects multiple peaks in the timing metric; indicates a symbol detection based on the multiple peaks detected in the timing metric; and gets a refined CFO estimation using averaging the phase information across these multiple peaks.

摘要翻译： 用于OFDM接收器的符号检测器确定至少两个接收到的前导码符号样本的相应样本的相关性，其中一个采样相对于另一个延迟预定持续时间; 基于相关结果确定时间度量; 检测定时度量中的多个峰值; 表示基于在定时度量中检测到的多个峰值的符号检测; 并且通过对这些多个峰值之间的相位信息进行平均来获得精确的CFO估计。

公开(公告)号：US07620067B2

公开(公告)日：2009-11-17

申请号：US11317058

申请日：2005-12-22

申请人： Huaning Niu ,  Chiu Ngo

发明人： Huaning Niu ,  Chiu Ngo

IPC分类号： H04J3/16

CPC分类号： H04B7/0689 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0025 ,  H04L1/0631 ,  H04L1/0668 ,  H04L1/0675

摘要： A method and system is provided that selects transmission modes between spatial multiplexing, delay diversity and space-time coding in 802.11n systems. As such, eigen-value computation for mode selection is not required. This provides efficiency, in particular for basic receiver structure where a linear MMSE or ZF MIMO detector is applied. Further, mode selection using a simple metric provides accurate mode selection. In addition by switching between different transmission modes, a link adaptation algorithm according to the present invention provides improved system performance.

摘要翻译： 提供了一种在802.11n系统中选择空间复用，延迟分集和时空编码之间的传输模式的方法和系统。 因此，不需要用于模式选择的特征值计算。 这提供了效率，特别是对于应用线性MMSE或ZF MIMO检测器的基本接收机结构。 此外，使用简单度量的模式选择提供精确的模式选择。 另外，通过在不同的传输模式之间进行切换，根据本发明的链路自适应算法提供了改进的系统性能。

公开(公告)号：US07616699B2

公开(公告)日：2009-11-10

申请号：US11104722

申请日：2005-04-12

申请人： Huaning Niu ,  Chiu Ngo

发明人： Huaning Niu ,  Chiu Ngo

IPC分类号： H04B7/02

CPC分类号： H04L25/067 ,  H04B7/0413 ,  H04L1/0054 ,  H04L1/06 ,  H04L27/22

摘要： A telecommunication MIMO receiver implements soft bit metric calculation with direct matrix inversion MIMO detection. The receiver has a detector that detects data symbols in a received signal by determining distances between received signal points and constellation points; a scaler that scales the distances using a scaling factor; and a soft bit metric calculator that uses the scaled distances to calculate scaled soft bit metrics. The receiver can also have a decoder that decodes the soft bit metrics to determine data values in the received signals. Preferably, the receiver also has a quantizer that dynamically quantizes the soft bit metrics before decoding by the decoder.

摘要翻译： 电信MIMO接收机通过直接矩阵反演MIMO检测实现软比特度量计算。 接收机具有通过确定接收信号点和星座点之间的距离来检测接收信号中的数据符号的检测器; 使用缩放因子缩放距离的缩放器; 以及使用缩放距离来计算缩放软比特度量的软比特度量计算器。 接收机还可以具有解码软比特度量以确定接收信号中的数据值的解码器。 优选地，接收机还具有量化器，其在解码器解码之前动态地量化软比特度量。

公开(公告)号：US20090274233A1

公开(公告)日：2009-11-05

申请号：US12112985

申请日：2008-04-30

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H04B7/02 ,  H04L27/06

CPC分类号： H04L27/2657 ,  H04L27/0014 ,  H04L27/2676 ,  H04L2027/0067 ,  H04L2027/0087

摘要： A method and system phase tracking in a wireless communication system is provided. Phase tracking involves receiving a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second OFDM symbol which is a repetition of the first symbol, over a wireless channel, the symbols representing an incoming signal. A phase of the incoming signal is extracted by performing phase tracking across all subcarrier data tones and pilot tones of the symbols.

摘要翻译： 提供了一种在无线通信系统中的方法和系统相位跟踪。 相位跟踪涉及通过无线信道接收第一正交频分复用（OFDM）符号和作为第一符号的重复的第二OFDM符号，表示输入信号的符号。 通过对所有子载波数据音调和符号的导频音执行相位跟踪来提取输入信号的相位。

公开(公告)号：US20090086699A1

公开(公告)日：2009-04-02

申请号：US11906350

申请日：2007-10-02

申请人： Huaning Niu ,  Chiu Ngo

发明人： Huaning Niu ,  Chiu Ngo

IPC分类号： H04B7/216

CPC分类号： H04L1/007 ,  H03M13/1102 ,  H03M13/356 ,  H04L1/1816 ,  H04L1/1867

摘要： A method and system for wireless data communication is provided, which involves constructing a data payload containing data, partitioning the data payload into fragments, performing block code encoding on each fragment, wherein at least one fragment is encoded at a different coding gain than another fragment, and transmitting the data payload including encoded fragments over a wireless channel.

摘要翻译： 提供了一种用于无线数据通信的方法和系统，其涉及构建包含数据的数据有效载荷，将数据有效载荷划分成片段，对每个片段执行块码编码，其中至少一个片段以不同于另一片段的编码增益被编码 并且通过无线信道发送包括编码片段的数据有效载荷。

公开(公告)号：US20090058724A1

公开(公告)日：2009-03-05

申请号：US11899286

申请日：2007-09-05

申请人： Pengfei Xia ,  Huaning Niu ,  Chiu Ngo

发明人： Pengfei Xia ,  Huaning Niu ,  Chiu Ngo

IPC分类号： H01Q3/26

CPC分类号： H01Q3/2605

摘要： A method and system for analog beamforming in wireless communication system, is provided. Analog beamforming coefficients are constructed by performing an iterative beam acquisition process based on beam search training, and determining optimized beamforming weighting coefficients based on the iterative beam acquisition process.

摘要翻译： 提供了一种无线通信系统中模拟波束成形的方法和系统。 通过执行基于波束搜索训练的迭代波束获取过程，并且基于迭代波束采集过程来确定优化的波束成形加权系数来构造模拟波束成形系数。

公开(公告)号：US20090046765A1

公开(公告)日：2009-02-19

申请号：US12144574

申请日：2008-06-23

申请人： Pengfei Xia ,  Huaning Niu ,  Chiu Ngo

发明人： Pengfei Xia ,  Huaning Niu ,  Chiu Ngo

IPC分类号： H04B1/707

CPC分类号： H04B7/086 ,  H04B7/0617 ,  H04B7/0619 ,  H04L5/0023

摘要： A method and system for acquiring beamforming vectors using multiple spreading sequence spreading gains is disclosed. One embodiment of the invention allows time and power to be saved by spreading a training sequence with spreading sequences of different gains in different iterations of an iterative beamforming acquisition procedure. In one embodiment of the invention, the method comprises modulating, at a first station, a first training sequence with a first source beamforming vector, wherein the first training sequence has a first spreading gain, transmitting the modulated first training sequence to a second station, receiving a first response signal from the second station, obtaining a second source beamforming vector based on the first response signal, modulating, at the first station, a second training sequence with the second source beamforming vector, wherein the second training signal has a second spreading gain which is different from the first spreading gain, transmitting the modulated second training sequence to the second station, receiving a second response signal from the second station, obtaining a third source beamforming vector based on the second response signal, and determining whether to use the third source beamforming vector to modulate a data signal to be transmitted to the second station.

摘要翻译： 公开了一种使用多个扩展序列扩展增益获取波束成形向量的方法和系统。 本发明的一个实施例允许通过在迭代波束形成获取过程的不同迭代中扩展具有不同增益的扩展序列的训练序列来节省时间和功率。 在本发明的一个实施例中，该方法包括在第一站处利用第一源波束形成向量来调制第一训练序列，其中第一训练序列具有第一扩展增益，将调制的第一训练序列发送到第二站， 从所述第二站接收第一响应信号，基于所述第一响应信号获得第二源波束成形向量，在所述第一站处调制具有所述第二源波束形成向量的第二训练序列，其中所述第二训练信号具有第二扩频 与第一扩展增益不同的增益，将调制的第二训练序列发送到第二站，从第二站接收第二响应信号，基于第二响应信号获得第三源波束成形向量，以及确定是否使用 第三源波束成形矢量来调制要发送到第二站的数据信号。