公开(公告)号：US08249513B2

公开(公告)日：2012-08-21

申请号：US12189726

申请日：2008-08-11

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H04B1/00 ,  H04M1/00

CPC分类号： H01Q3/2605 ,  H01Q3/26 ,  H04B7/043 ,  H04B7/0691

摘要： A system and method of training antennas for two devices having different types of directional antennas in a wireless network is disclosed. The method includes transmitting a plurality of estimation training sequences from a transmit directional antenna to a receive directional antenna. The length of at least one of the plurality of training sequences is adapted to a number of antenna elements at one of the transmit and receive directional antennas. The method further includes transmitting data to the receiver via the transmit directional antenna tuned with an antenna parameter that is selected based at least in part on the plurality of estimation sequences.

摘要翻译： 公开了一种用于在无线网络中训练具有不同类型定向天线的两个设备的天线的系统和方法。 该方法包括从发射定向天线向接收定向天线发送多个估计训练序列。 所述多个训练序列中的至少一个训练序列的长度适合于所述发射和接收定向天线之一处的多个天线元件。 该方法还包括经由经由至少部分地基于多个估计序列选择的天线参数调谐的发射定向天线向接收机发送数据。

公开(公告)号：US08223873B2

公开(公告)日：2012-07-17

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： H04B7/02

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。

公开(公告)号：US07714783B2

公开(公告)日：2010-05-11

申请号：US11890207

申请日：2007-08-02

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H01Q3/26 ,  H01Q3/00

CPC分类号： H01Q3/26

摘要： A method and system for analog beamforming for wireless communication is provided. Such analog beamforming involves performing channel sounding to obtain channel sounding information, determining statistical channel information based on the channel sounding information, and determining analog beamforming coefficients based on the statistical channel information, for analog beamforming communication over multiple antennas.

摘要翻译： 提供了一种用于无线通信的模拟波束成形的方法和系统。 这种模拟波束形成涉及执行信道探测以获得信道探测信息，基于信道探测信息确定统计信道信息，以及基于统计信道信息确定用于多个天线上的模拟波束成形通信的模拟波束成形系数。

公开(公告)号：US20090233556A1

公开(公告)日：2009-09-17

申请号：US12050071

申请日：2008-03-17

申请人： Pengfei Xia ,  Huaning Niu ,  Chiu Ngo

发明人： Pengfei Xia ,  Huaning Niu ,  Chiu Ngo

IPC分类号： H04B1/58

CPC分类号： H04B7/0617 ,  H04B7/0626

摘要： A method and system for beamforming communication in high throughput wireless communications. Analog beamforming involves constructing analog beamforming coefficients for beamforming communication on a wireless channel. Constructing analog beamforming coefficients includes selecting a signal tap from a multi-tap wireless channel for beamforming communication, wherein the selected signal tap has a higher signal quality relative to other signals taps, and determining beamforming coefficients for the selected tap by iterative acquisition of the coefficients based on power iteration.

摘要翻译： 一种用于在高吞吐量无线通信中波束成形通信的方法和系统。 模拟波束成形涉及在无线信道上构造用于波束成形通信的模拟波束成形系数。 构造模拟波束成形系数包括从用于波束成形通信的多抽头无线信道中选择信号抽头，其中所选择的信号抽头相对于其他信号抽头具有更高的信号质量，以及通过迭代获取系数来确定所选择的抽头的波束成形系数 基于权力迭代。

公开(公告)号：US20090047910A1

公开(公告)日：2009-02-19

申请号：US12189726

申请日：2008-08-11

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H04B7/00

CPC分类号： H01Q3/2605 ,  H01Q3/26 ,  H04B7/043 ,  H04B7/0691

摘要： A system and method of training antennas for two devices having different types of directional antennas in a wireless network is disclosed. The method includes transmitting a plurality of estimation training sequences from a transmit directional antenna to a receive directional antenna. The length of at least one of the plurality of training sequences is adapted to a number of antenna elements at one of the transmit and receive directional antennas. The method further includes transmitting data to the receiver via the transmit directional antenna tuned with an antenna parameter that is selected based at least in part on the plurality of estimation sequences.

摘要翻译： 公开了一种用于在无线网络中训练具有不同类型定向天线的两个设备的天线的系统和方法。 该方法包括从发射定向天线向接收定向天线发送多个估计训练序列。 所述多个训练序列中的至少一个训练序列的长度适合于所述发射和接收定向天线之一处的多个天线元件。 该方法还包括经由经由至少部分地基于多个估计序列选择的天线参数调谐的发射定向天线向接收机发送数据。

公开(公告)号：US20090046798A1

公开(公告)日：2009-02-19

申请号：US12144535

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： H04L1/02

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

摘要： A method and system for obtaining and transfer matrix and or acquiring beamforming vectors using a Butson matrix is disclosed. In one embodiment, the method includes i) determining the number (N) of transmitter antennas, ii) obtaining a unitary matrix having M rows and M columns, wherein M is an greater than or equal to N, and wherein the elements of the matrix are selected from the group consisting of: +1, −1, +j, and −j, iii) selecting N rows of the unitary matrix and iv) generating a training matrix having N rows and M columns based on the selected N rows. The method may further include obtaining a source beamforming vector using the training matrix.

摘要翻译： 公开了一种使用Butson矩阵获取和传送矩阵和或获取波束成形向量的方法和系统。 在一个实施例中，该方法包括：i）确定发射机天线的数量（N），ii）获得具有M行和M列的酉矩阵，其中M大于或等于N，并且其中矩阵的元素 选自：+1，-1，+ j和-j，iii）选择酉矩阵的N行，以及iv）基于所选择的N行生成具有N行和M列的训练矩阵。 该方法可以进一步包括使用训练矩阵来获得源波束形成向量。

公开(公告)号：US20080225819A1

公开(公告)日：2008-09-18

申请号：US11863109

申请日：2007-09-27

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H04B7/216

CPC分类号： H04L12/66 ,  H03M13/05 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/23 ,  H03M13/2703 ,  H03M13/2936 ,  H03M13/356 ,  H03M13/47 ,  H03M13/618 ,  H04N21/2383 ,  H04N21/43637 ,  H04N21/4382

摘要： A method and system for processing high definition video data to be transmitted over a wireless medium is disclosed. In one embodiment, the method includes receiving an information packet having the length of L bytes, wherein L=(M×n×K)+A, and where: M is the depth of an interleaver, n is the number of interleavers, K is an encoding code length and A is the number of remainder bytes with respect to M×n×K bytes, wherein the remainder bytes are located at the end of the information packet. M×n×K bytes represent M×n codewords, wherein the remainder bytes sequentially form a plurality of remainder codewords, and wherein the plurality of remainder codewords comprise a last codeword which is located at the end of the remainder codewords. The method further includes i) shortening the last codeword such that the resultant shortened codeword is shorter in length than each of the remaining codewords of the information packet and ii) adding dummy bits to the outer encoded data so as to meet a predefined size requirement for an outer interleaver.

摘要翻译： 公开了一种用于处理通过无线介质发送的高清晰度视频数据的方法和系统。 在一个实施例中，该方法包括：接收长度为L字节的信息包，其中L =（Mxn×K）+ A，其中：M是交织器的深度，n是交织器的数量，K是编码码 长度和A是相对于MxnxK字节的剩余字节数，其中剩余字节位于信息分组的末尾。 Mxn×K字节表示M×n个码字，其中剩余字节顺序地形成多个余数码字，并且其中多个余数码字包括位于剩余码字结束处的最后码字。 所述方法还包括：i）缩短最后的码字，使得所得到的缩短的码字的长度小于信息包的剩余码字中的每一个，以及ii）将虚拟位加到外部编码数据，以满足预定义的大小要求 外部交织器。

公开(公告)号：US20080225818A1

公开(公告)日：2008-09-18

申请号：US11863084

申请日：2007-09-27

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H04B7/216 ,  H04N11/04

CPC分类号： H03M13/27 ,  H03M13/05 ,  H03M13/15 ,  H03M13/1515 ,  H03M13/2732 ,  H03M13/2936 ,  H03M13/47 ,  H03M13/618 ,  H03M13/6522 ,  H04N21/4113 ,  H04N21/43615 ,  H04N21/43637

摘要： A method and system for processing high definition video data using remainder bytes is disclosed. In one embodiment, the method includes receiving an information packet having the length of L bytes, wherein L=(M×n×K)+A, and where: M is the depth of an interleaver, n is the number of interleavers, K is an encoding code length and A is the number of remainder bytes with respect to M×n×K bytes, wherein the remainder bytes are located at the end of the information packet, and wherein M×n×K bytes represent M×n codewords. The method further includes converting the A remainder bytes into a plurality of shortened codewords, wherein each of the shortened codewords is shorter in length than each of the M×n codewords. At least one embodiment of the invention provides much lower padding efficiency while improving the decoding performance.

摘要翻译： 公开了一种使用余数字节处理高分辨率视频数据的方法和系统。 在一个实施例中，该方法包括：接收长度为L字节的信息包，其中L =（Mxn×K）+ A，其中：M是交织器的深度，n是交织器的数量，K是编码码 长度和A是相对于MxnxK字节的剩余字节数，其中剩余字节位于信息包的末尾，并且其中Mxn×K字节表示M×n个码字。 该方法还包括将A余数字节转换为多个缩短的码字，其中每个缩短的码字的长度比每个M×n码字短。 本发明的至少一个实施例提供了低得多的填充效率，同时提高了解码性能。

公开(公告)号：US20080159356A1

公开(公告)日：2008-07-03

申请号：US11648468

申请日：2006-12-28

申请人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

发明人： Huaning Niu ,  Pengfei Xia ,  Chiu Ngo

IPC分类号： H04B1/69

CPC分类号： H04L27/2602 ,  H04B7/0678 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/08 ,  H04L5/0007 ,  H04L5/0044

摘要： A method and a system for low-rate bidirectional communications for establishing and maintaining a unidirectional high-rate data link, is provided, wherein orthogonal frequency division multiplexing (OFDM) with spreading is utilized on the low-rate channel. Low-rate communications in an omni-directional mode achieve similar coverage as the high-rate communications in a beamforming mode.

摘要翻译： 提供了一种用于建立和维护单向高速数据链路的低速双向通信的方法和系统，其中在低速率信道上利用具有扩展的正交频分复用（OFDM）。 全向模式下的低速率通信实现与波束成形模式下的高速率通信类似的覆盖。

公开(公告)号：US20070223572A1

公开(公告)日：2007-09-27

申请号：US11725381

申请日：2007-03-19

申请人： Pengfei Xia ,  Huaning Niu ,  Chiu Ngo

发明人： Pengfei Xia ,  Huaning Niu ,  Chiu Ngo

IPC分类号： H04B1/66

CPC分类号： H04N21/2383 ,  H03M13/23 ,  H03M13/2707 ,  H03M13/2732 ,  H03M13/2742 ,  H04N21/4382

摘要： A wireless communication system for transmitting uncompressed video pixels from a transmitter to a receiver over a wireless channel is provided. The transmitter includes an interleaver that interleaves the video pixels into interleaved pixels, and an encoder that convolutionally encodes the interleaved pixels at the transmitter before transmission to the receiver. The receiver includes a decoder that decodes the encoded pixels, and a deinterleaver that deinterleaves the decoded pixels. When the video pixels include pixel errors, such interleaving and deinterleaving reduces pixel error clustering and improves video quality.

摘要翻译： 提供了一种用于通过无线信道从发射机向接收机发送未压缩视频像素的无线通信系统。 发射机包括将视频像素交织成交错像素的交织器，以及在发送到接收机之前对发送器处的交织像素进行卷积编码的编码器。 接收机包括对编码像素进行解码的解码器，以及解交错解码像素的解交织器。 当视频像素包括像素误差时，这种交织和解交织减少了像素误差聚类并提高了视频质量。