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61. 发明授权

US08165595B2 System and method for multi-stage antenna training of beamforming vectors 有权
标题翻译：波束成形矢量多级天线训练系统与方法
公开(公告)号：US08165595B2
公开(公告)日：2012-04-24
申请号：US12264100
申请日：2008-11-03
申请人： Pengfei Xia , Chiu Ngo
发明人： Pengfei Xia , Chiu Ngo
IPC分类号： H04W72/00
CPC分类号： H04B7/0617 , H04B17/24 , H04B17/309 , H04B17/318
摘要： A system and method for multi-stage antenna training of beamforming vectors is disclosed. In one embodiment, the method comprises a method of acquiring a beamforming pattern in a wireless communication system, the method comprising receiving a first plurality of signals having different transceiver sector patterns, measuring first indicators of link quality corresponding to the first plurality of signals, selecting at least one transceiver sector pattern based on the first indicators of link quality, receiving a second plurality of signals having different transceiver beam patterns, each transceiver beam pattern associated with the selected at least one transceiver sector pattern, measuring second indicators of link quality corresponding to the second plurality of signals, and selecting at least one transceiver beam pattern based on the second measures of link quality.
摘要翻译：公开了一种用于波束形成向量的多级天线训练的系统和方法。在一个实施例中，该方法包括在无线通信系统中获取波束形成模式的方法，所述方法包括：接收具有不同收发器扇区模式的第一多个信号，测量与第一多个信号相对应的链路质量的第一指示符，选择基于链路质量的第一指示符的至少一个收发器扇区模式，接收具有不同收发器波束模式的第二多个信号，与所选择的至少一个收发器扇区模式相关联的每个收发器波束模式，测量对应于第二多个信号，并且基于链路质量的第二测量来选择至少一个收发器波束图案。

62. 发明授权

US08107545B2 Method and system for phase tracking in wireless communication systems 有权
标题翻译：无线通信系统中相位跟踪的方法和系统
公开(公告)号：US08107545B2
公开(公告)日：2012-01-31
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： H04K1/10
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。

63. 发明授权

US08051037B2 System and method for pseudorandom permutation for interleaving in wireless communications 有权
标题翻译：用于无线通信中交织的伪随机排列的系统和方法
公开(公告)号：US08051037B2
公开(公告)日：2011-11-01
申请号：US12264111
申请日：2008-11-03
申请人： Pengfei Xia , Chiu Ngo
发明人： Pengfei Xia , Chiu Ngo
IPC分类号： G06F7/00
CPC分类号： H04L1/0071 , H03M13/2739 , H03M13/2789 , H04L1/0065
摘要： A system and method for pseudorandom permutation for interleaving in wireless communication is disclosed. In one embodiment, the method comprises receiving a first ordered sequence of communication symbols having a first order, permuting the first ordered sequence of communication symbols to generate a second ordered sequence of communication symbols having a second order, and outputting the second ordered sequence of communication symbols, wherein the second order is based, at least in part, on a third order having a greater size than the second order, the third order being a pseudorandom permutation defined by the input-output relationship Y = mod ⁡ ( m * S * ( S + 1 ) 2 , P ) , wherein P is the smallest power of two not less than the number of elements in the first ordered sequence, S is an input order represented by a sequence of consecutive integers from zero to P−1 in increasing order, Y is an output order represented as a sequence of integers, and m is an integer.
摘要翻译：公开了一种用于在无线通信中进行交织的伪随机置换的系统和方法。在一个实施例中，该方法包括接收具有第一阶的通信符号的第一有序序列，置换通信符号的第一有序序列以产生具有二阶通信符号的第二有序序列，并输出第二有序序列的通信符号，其中所述第二级至少部分地基于具有比所述第二级更大的大小的第三级，所述第三级是由所述输入 - 输出关系Y = mod⁡（m * S *）定义的伪随机排列，（S + 1）2，P），其中P是不小于第一序列中的元素的数量的两个的最小幂，S是由从零到P-1的连续整数的序列表示的输入阶数增加顺序，Y是表示为整数序列的输出顺序，m是整数。

64. 发明授权

US07860128B2 System and method for wireless communication of uncompressed video having a preamble design 有权
标题翻译：具有前导码设计的未压缩视频的无线通信系统和方法
公开(公告)号：US07860128B2
公开(公告)日：2010-12-28
申请号：US11735405
申请日：2007-04-13
申请人： Huaning Niu , Pengfei Xia , Chiu Ngo
发明人： Huaning Niu , Pengfei Xia , Chiu Ngo
IPC分类号： H04B7/208
CPC分类号： H04L27/2613 , H04N21/2383 , H04N21/43637 , H04N21/4382
摘要： A method and system for transmitting uncompressed video information from a sender to a receiver over a wireless channel is described. Uncompressed video information bits are provided at the sender and the video information bits are packetized into one or more packets. A preamble to precede the data in each packet is provided, where the preamble includes a set of short training sequences and a set of long training sequences. Multiple packets are transmitted from the sender to the receiver over a wireless channel. In certain embodiments, the set of short training sequences includes seven short training sequences and the set of long training sequences includes two long training sequences, and the total length of the preamble is five orthogonal frequency-division multiplexing (OFDM) symbols long.
摘要翻译：描述了一种通过无线信道将未压缩视频信息从发送方发送到接收机的方法和系统。未压缩的视频信息位在发送器处被提供，并且视频信息比特被分组成一个或多个分组。提供了在每个分组中的数据之前的前导码，其中前导码包括一组短训练序列和一组长训练序列。多个分组通过无线信道从发送者发送到接收者。在某些实施例中，短训练序列集合包括七个短训练序列，并且该组训练序列包括两个长训练序列，并且前导码的总长度是五个正交频分复用（OFDM）符号。

65. 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。

66. 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。

67. 发明授权

US07672384B2 Bandwidth and power efficient multicarrier multiple access 有权
标题翻译：带宽和功率效率的多载波多路访问
公开(公告)号：US07672384B2
公开(公告)日：2010-03-02
申请号：US11070855
申请日：2005-03-02
申请人： Georgios B. Giannakis , Shengli Zhou , Pengfei Xia
发明人： Georgios B. Giannakis , Shengli Zhou , Pengfei Xia
IPC分类号： H04K1/10
CPC分类号： H04L5/023
摘要： Techniques are described for multicarrier multiple access wireless transmission, e.g. orthogonal frequency-division multiple access (OFDMA) transmissions, over frequency selective fading channels. The techniques are designed to maintain constant modulus transmissions for uplink while effectively mitigating intersymbol interference. Specifically, the techniques utilize non-redundant unitary precoding across OFDMA subcarriers to maintain constant modulus transmissions for uplink communications. For example, the techniques involve precoding a block of information symbols and assigning a different subcarrier for each symbol of the block. The subcarriers are selected to be equi-spaced and may be selected, for example, from a phase-shift keying constellation. The number of symbols per block is equal to the number of subcarriers assigned per user. Importantly, even with multiple subcarriers per user, the techniques enable constant modulus transmissions for uplink. Consequently, the techniques may achieve high power and bandwidth efficiency as well as improved performance over conventional OFDMA and GMC-CDMA transmissions.
摘要翻译：描述了用于多载波多址无线传输的技术，例如。正交频分多址（OFDMA）传输，频率选择性衰落信道。这些技术被设计为保持上行链路的恒定模数传输，同时有效地减轻符号间干扰。具体地说，这些技术利用跨OFDMA子载波的非冗余单一预编码来维持用于上行链路通信的恒模传输。例如，这些技术涉及对信息符号块进行预编码并为块的每个符号分配不同的子载波。子载波被选择为等间距，并且可以例如从相移键控星座中选择。每个块的符号数等于每个用户分配的子载波数。重要的是，即使每个用户有多个子载波，这些技术也可以实现上行链路的恒定模数传输。因此，与传统的OFDMA和GMC-CDMA传输相比，这些技术可以实现高功率和带宽效率以及改进的性能。

68. 发明申请

US20090274233A1 METHOD AND SYSTEM FOR PHASE TRACKING IN WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：无线通信系统中相位跟踪的方法与系统
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。

69. 发明申请

US20090141824A1 METHOD AND SYSTEM FOR GENERATING CANDIDATE BEAMFORMING COEEFICIENTS FOR TRANSMISSION OF DATA OVER A WIRELESS MEDIUM 有权
标题翻译：用于生成用于在无线介质上传输数据的候选波束形成方法和系统
公开(公告)号：US20090141824A1
公开(公告)日：2009-06-04
申请号：US12368912
申请日：2009-02-10
申请人： Pengfei Xia , Su-Khiong Yong , Chiu Ngo
发明人： Pengfei Xia , Su-Khiong Yong , Chiu Ngo
IPC分类号： H04B7/02 , H04B7/06
CPC分类号： H04B7/0417 , H04B7/0617 , H04B7/0639
摘要： A method and system for generating a number of candidate beamforming vectors for transmission of data over a wireless medium, is provided. One implementation involves determining the number (N) of transmitter antennas; determining the number (n) of candidate beamforming vectors to be constructed as an algebraic function of N; providing a Fourier transform matrix W comprising (n+1) rows and (n+1) columns; selecting N rows from the Fourier transform matrix W; and generating an abridged matrix using the selected N rows, wherein each column of the abridged matrix is configured to be used as a candidate beamforming vector for transmission of a data signal, such that the abridged matrix comprises a N×n sub-matrix of the Fourier transform matrix W.
摘要翻译：提供了一种用于生成用于通过无线介质传输数据的候选波束成形向量的数量的方法和系统。一个实现涉及确定发射机天线的数量（N）; 确定要构造为N的代数函数的候选波束成形向量的数量（n）; 提供包括（n + 1）行和（n + 1）列的傅里叶变换矩阵W; 从傅立叶变换矩阵W中选择N行; 以及使用所选择的N行来生成一个简化矩阵，其中所述精简矩阵的每列被配置为用作数据信号传输的候选波束成形向量，使得所述精简矩阵包括傅里叶变换的N×N个子矩阵矩阵W.

70. 发明申请

US20090058724A1 Method and system for analog beamforming in wireless communication systems 失效
标题翻译：无线通信系统中模拟波束成形的方法和系统
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。

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