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1. 发明申请

WO2008124690A1 METHODS AND SYSTEMS FOR COMPUTING A MINIMUM VARIANCE UNBIASED ESTIMATOR OF CARRIER AND SAMPLING CLOCK FREQUENCY 审中-公开
标题翻译：用于计算载波和采样时钟频率的最小变量未估计的估计器的方法和系统
公开(公告)号：WO2008124690A1
公开(公告)日：2008-10-16
申请号：PCT/US2008/059574
申请日：2008-04-07
申请人： OLYMPUS COMMUNICATION TECHNOLOGY OF AMERICA, INC. , IONESCU, Dumitru, Mihai , AMANULLAH, Abu , HEIARI-BATENI, Ghobad
发明人： IONESCU, Dumitru, Mihai , AMANULLAH, Abu , HEIARI-BATENI, Ghobad
IPC分类号： H04J11/00
CPC分类号： H04L27/2657 , H04J11/0066 , H04L27/2675 , H04L27/2691
摘要： Various embodiments of the systems and methods described herein may be used to compute a minimum variance unbiased estimator by receiving a first OFDM signal at a pilot tone, receiving a second OFDM signal sent in the same frequency band and determining a differential phase metric between the first OFDM signal and the second OFDM signal. In some embodiments, the differential phase metric may be used to diversity combine synchronization statistics. In various embodiments, the differential phase metric may be used to detect a narrow-band interference.
摘要翻译：本文描述的系统和方法的各种实施例可以用于通过以导频音接收第一OFDM信号来计算最小方差无偏估计器，接收在相同频带中发送的第二OFDM信号，并且确定第一 OFDM信号和第二OFDM信号。在一些实施例中，差分相位度量可用于分集组合同步统计。在各种实施例中，差分相位度量可用于检测窄带干扰。

2. 发明申请

WO2007093907A3 APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT PROVIDING AIMO RECEIVER 审中-公开
标题翻译：设备，方法和计算机程序产品提供AIMO接收器
公开(公告)号：WO2007093907A3
公开(公告)日：2008-03-20
申请号：PCT/IB2007000386
申请日：2007-02-16
申请人： NOKIA CORP , NOKIA INC , IONESCU DUMITRU MIHAI
发明人： IONESCU DUMITRU MIHAI
IPC分类号： H04B7/06 , H03M13/25 , H03M13/45 , H04B7/04
CPC分类号： H04B7/0669 , H03M13/11 , H03M13/1102 , H04B7/0837 , H04B7/0891 , H04L1/0631 , H04L1/065 , H04L1/0668 , H04L25/03171 , H04L25/03242 , H04L27/2647 , H04L2025/03426
摘要： Disclosed is a method, computer program product and an apparatus providing a novel multiple input/multiple output (MIMO) receiver. The method includes receiving a plurality of signals through a plurality of antennas, the plurality of signals being modulated with a space-time lattice code; removing an effect of a channel matrix from the received signals to provide an equalized received signal; and lattice detecting the equalized received signal based on a Tanner graph representation of the lattice. The Tanner graph representation is one where lattice points inside a shaping region of interest are partitioned into a plurality of subgroups, where each subgroup includes a plurality of different lattice points labeled by an Abelian group block codeword, and where lattice detecting operates on the subgroups. The labels of all subgroups form an Abelian block code represented by the Tanner graph, and lattice detecting further includes performing belief propagation on a corresponding non-binary label Tanner graph to yield a totala
摘要翻译：公开了一种提供新颖的多输入/多输出（MIMO）接收机的方法，计算机程序产品和装置。该方法包括：通过多个天线接收多个信号，该多个信号用时空格码编码; 从接收的信号中去除信道矩阵的影响以提供均衡的接收信号; 并且基于格子的Tanner图表示来格子检测均衡的接收信号。 Tanner图表示是将感兴趣的成像区域内的格点分割成多个子组，其中每个子组包括由阿贝尔组块码字标注的多个不同的格点，并且其中晶格检测对子组进行操作。所有子组的标签形成由Tanner图表示的Abelian块码，并且晶格检测还包括在对应的非二进制标签Tanner图上执行置信传播，以产生totala

3. 发明申请

WO2007020512A3 METHOD, SYSTEM, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PLACING PILOTS IN A MULTICARRIER MIMO SYSTEM 审中-公开
标题翻译：用于在多元MIMO系统中放置导频的方法，系统，设备和计算机程序产品
公开(公告)号：WO2007020512A3
公开(公告)日：2007-04-26
申请号：PCT/IB2006002210
申请日：2006-08-11
申请人： NOKIA CORP , IONESCU DUMITRU MIHAI , RAGHOTHAMAN BALAJI
发明人： IONESCU DUMITRU MIHAI , RAGHOTHAMAN BALAJI
IPC分类号： H04L7/00 , H04B7/04 , H04L25/02
CPC分类号： H04L5/0048 , H04B7/04 , H04L5/0023 , H04L25/0204 , H04L25/0226 , H04L25/0232 , H04L25/03828 , H04L27/2604 , H04L27/2655 , H04L27/2657 , H04L27/2662
摘要： A method, system, apparatus and computer program product are provided for placing pilot symbols in an OFDM system using sets of multidimensional points having a structure that is derived from discernible expansions of generalized orthogonal designs. These sets of multidimensional points may be used to form pilot symbols on a two-dimensional frequency-time pilot symbol grid for sampling the flat fading process on various subcarriers of an OFDM MIMO system, transmit antennas, and OFDM symbols. The pilot information associated with the pilot symbols may be used to perform initial carrier synchronization and OFDM symbol timing while discerning between candidate base stations.
摘要翻译：提供了一种方法，系统，设备和计算机程序产品，用于使用具有从广义正交设计的可辨别扩展导出的结构的多维点集合将导频符号放置在OFDM系统中。可以使用这些多维点集合来在二维频率 - 时间导频符号网格上形成导频符号，以在OFDM MIMO系统的各个子载波，发射天线和OFDM符号上对平坦衰落过程进行采样。与导频符号相关联的导频信息可以用于在候选基站之间辨别的同时执行初始载波同步和OFDM符号定时。

4. 发明申请

WO2008124688A1 METHODS AND SYSTEMS FOR DIVERSITY COMBINING OF SYNCHRONIZATION STATISTICS IN OFDM SYSTEMS 审中-公开
标题翻译： OFDM系统中同步统计的多样性组合方法与系统
公开(公告)号：WO2008124688A1
公开(公告)日：2008-10-16
申请号：PCT/US2008/059572
申请日：2008-04-07
申请人： OLYMPUS COMMUNICATION TECHNOLOGY OF AMERICA, INC. , IONESCU, Dumitru, Mihai , AMANULLAH, Abu , HEIARI-BATENI, Ghobad
发明人： IONESCU, Dumitru, Mihai , AMANULLAH, Abu , HEIARI-BATENI, Ghobad
IPC分类号： H04Q7/00
CPC分类号： H04L27/2657 , H04J11/0066 , H04L27/2675 , H04L27/2691
摘要： Various embodiments of the systems and methods described herein may be used to compute a minimum variance unbiased estimator by receiving a first OFDM signal at a pilot tone, receiving a second OFDM signal sent in the same frequency band and determining a differential phase metric between the first OFDM signal and the second OFDM signal. In some embodiments, the differential phase metric may be used to diversity combine synchronization statistics. In various embodiments, the differential phase metric may be used to detect a narrow¬ band interference.
摘要翻译：本文描述的系统和方法的各种实施例可以用于通过以导频音接收第一OFDM信号来计算最小方差无偏估计器，接收在相同频带中发送的第二OFDM信号，并且确定第一 OFDM信号和第二OFDM信号。在一些实施例中，差分相位度量可用于分集组合同步统计。在各种实施例中，差分相位度量可用于检测窄带干扰。

5. 发明申请

WO2007020512A2 METHOD, SYSTEM, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PLACING PILOTS IN A MULTICARRIER MIMO SYSTEM 审中-公开
标题翻译：方法，系统，装置和计算机程序产品，用于在多功能MIMO系统中配置PILOTS
公开(公告)号：WO2007020512A2
公开(公告)日：2007-02-22
申请号：PCT/IB2006/002210
申请日：2006-08-11
申请人： NOKIA CORPORATION , IONESCU, Dumitru, Mihai , RAGHOTHAMAN, Balaji
发明人： IONESCU, Dumitru, Mihai , RAGHOTHAMAN, Balaji
IPC分类号： H04L27/26
CPC分类号： H04L5/0048 , H04B7/04 , H04L5/0023 , H04L25/0204 , H04L25/0226 , H04L25/0232 , H04L25/03828 , H04L27/2604 , H04L27/2655 , H04L27/2657 , H04L27/2662
摘要： A method, system, apparatus and computer program product are provided for placing pilot symbols in an OFDM system using sets of multidimensional points having a structure that is derived from discernible expansions of generalized orthogonal designs. These sets of multidimensional points may be used to form pilot symbols on a two-dimensional frequency-time pilot symbol grid for sampling the flat fading process on various subcarriers of an OFDM MIMO system, transmit antennas, and OFDM symbols. The pilot information associated with the pilot symbols may be used to perform initial carrier synchronization and OFDM symbol timing while discerning between candidate base stations.
摘要翻译：提供了一种方法，系统，装置和计算机程序产品，用于在OFDM系统中使用具有从广义正交设计的可辨识的扩展导出的结构的多维点集合来放置导频符号。这些多维点集合可以用于在二维频率 - 时间导频符号网格上形成用于对OFDM MIMO系统，发射天线和OFDM符号的各个子载波上的平坦衰落过程进行采样的导频符号。与导频符号相关联的导频信息可以用于在候选基站之间进行识别时执行初始载波同步和OFDM符号定时。

6. 发明申请

WO2006082475A1 METHOD AND APPARATUS FOR CONSTRUCTING MIMO CONSTELLATIONS THAT PRESERVE THEIR GEOMETRIC SHAPE IN FADING CHANNELS 审中-公开
标题翻译：用于构建在渐近通道中保留其几何形状的MIMO协议的方法和装置
公开(公告)号：WO2006082475A1
公开(公告)日：2006-08-10
申请号：PCT/IB2005/003945
申请日：2005-12-19
申请人： NOKIA CORPORATION , IONESCU, Dumitru, Mihai
发明人： IONESCU, Dumitru, Mihai
IPC分类号： H04L27/34 , H04L25/03 , H03M13/03
CPC分类号： H04L1/0668 , H04L1/0058 , H04L1/0625
摘要： A method and related system of constructing multidimensional constellations whose shape remains invariant despite multiplicative distortions inherent to fading channels, and which provide a means for introducing coding redundancy to a signal without affecting the spectral efficiency of that signal is provided. Specifically, a method is provided for expanding multidimensional constellations, to enable coding redundancy without decreased spectral efficiency, in such a way as to guarantee that the shape will be preserved in fading.
摘要翻译：提供了一种构造多维星座的方法和相关系统，其形状保持不变，尽管衰落信道固有的乘法失真，并且提供了用于将编码冗余引入到信号而不影响该信号的频谱效率的装置。具体地，提供了一种用于扩展多维星座的方法，以使得能够进行编码冗余而不降低频谱效率，以保证形状将保持在衰落中。

7. 发明申请

WO2007093907A2 APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT PROVIDING AIMO RECEIVER 审中-公开
标题翻译：设备，方法和计算机程序产品提供AIMO接收器
公开(公告)号：WO2007093907A2
公开(公告)日：2007-08-23
申请号：PCT/IB2007/000386
申请日：2007-02-16
申请人： NOKIA CORPORATION , NOKIA, INC. , IONESCU, Dumitru, Mihai
发明人： IONESCU, Dumitru, Mihai
IPC分类号： H04B7/08 , H03M13/45 , H03M13/25
CPC分类号： H04B7/0669 , H03M13/11 , H03M13/1102 , H04B7/0837 , H04B7/0891 , H04L1/0631 , H04L1/065 , H04L1/0668 , H04L25/03171 , H04L25/03242 , H04L27/2647 , H04L2025/03426
摘要： Disclosed is a method, computer program product and an apparatus providing a novel multiple input/multiple output (MIMO) receiver. The method includes receiving a plurality of signals through a plurality of antennas, the plurality of signals being modulated with a space-time lattice code; removing an effect of a channel matrix from the received signals to provide an equalized received signal; and lattice detecting the equalized received signal based on a Tanner graph representation of the lattice. The Tanner graph representation is one where lattice points inside a shaping region of interest are partitioned into a plurality of subgroups, where each subgroup includes a plurality of different lattice points labeled by an Abelian group block codeword, and where lattice detecting operates on the subgroups. The labels of all subgroups form an Abelian block code represented by the Tanner graph, and lattice detecting further includes performing belief propagation on a corresponding non-binary label Tanner graph to yield a total a posterior probability (APP) and extrinsic APPs of the labels and their coordinates, and obtaining APPs of individual lattice points.
摘要翻译：公开了一种提供新颖的多输入/多输出（MIMO）接收机的方法，计算机程序产品和装置。该方法包括：通过多个天线接收多个信号，该多个信号用时空格码编码; 从接收的信号中去除信道矩阵的影响以提供均衡的接收信号; 并且基于格子的Tanner图表示来格子检测均衡的接收信号。 Tanner图表示是将感兴趣的成像区域内的格点分割成多个子组，其中每个子组包括由阿贝尔组块码字标注的多个不同的格点，并且其中晶格检测对子组进行操作。所有子组的标签形成由Tanner图表示的Abelian块码，并且晶格检测还包括在对应的非二进制标签Tanner图上执行置信传播，以产生总后

8. 发明申请

WO2006018687A1 METHOD AND APPARATUS USING COORDINATE INTERLEAVING TO INCREASE DIVERSITY IN A MIMO SYSTEM 审中-公开
标题翻译：使用协调交互在MIMO系统中增加多样性的方法和装置
公开(公告)号：WO2006018687A1
公开(公告)日：2006-02-23
申请号：PCT/IB2005/002288
申请日：2005-08-02
申请人： NOKIA CORPORATION , NOKIA, INC. , IONESCU, Dumitru, Mihai , GRAY, Steven
发明人： IONESCU, Dumitru, Mihai , GRAY, Steven
IPC分类号： H03M13/27 , H03M13/25 , H04B7/06
CPC分类号： H04L1/0625 , H04B7/0417 , H04B7/0626 , H04L1/0047 , H04L1/005 , H04L1/006 , H04L1/0068 , H04L1/0071 , H04L1/0631 , H04L5/06 , H04L27/183 , H04L27/186 , H04L27/2003 , H04L27/2604 , H04L27/3416 , H04L27/3488
摘要： A method to increase diversity in MIMO fading channels interleaves coordinates of complex symbol(s) in a transmission frame after encoding and modulating. Specifically, an input signal is encoded and modulated into a codeword, jointly across at least two pipes, said pipes having space, time, frequency, or other nature, wherein the codeword spans a frame and is defined as at least one complex symbol whose complex values are all those to be transmitted during all channel uses covered by the frame. Each of the complex symbols have a first and second coordinate. After modulating, which may be combined with encoding in a signal space encoder, the coordinates are interleaved. In modulation, the complex symbols (typically two dimensional) may arise as elements of a multidimensional (typically greater than two dimensions) signal constellation, in which case those multidimensional constellation coordinates are the ones that are interleaved in the frame. The frame carrying the interleaved coordinates is transmitted by the first and at least second antennas, possible opposed subframes of the overall frame being transmitted separately by opposed antennas. A coset selector is used in some embodiments to maximize a minimum Hamming distance, and/or a minimum Euclidean distance, between coordinates within a coset to control diversity and/or coding gain. In some embodiments, the operation of the encoder and modulator is such as to maximize a minimum coordinate-wise Hamming distance, and/or a minimum Euclidean distance, between allowable codewords, and/or to provide additional structure for the allowable codewords. A method, transmitter, system, and mobile station are described.
摘要翻译：增加MIMO衰落信道分集的方法在编码和调制之后的传输帧中交织复杂符号的坐标。具体地，输入信号被编码并且被调制成码字，共同跨越至少两个管道，所述管道具有空间，时间，频率或其他性质，其中码字跨越一个帧并被定义为至少一个复数符号，其复数值都是在框架覆盖的所有通道使用期间传输的值。每个复数符号具有第一和第二坐标。在可以与信号空间编码器中的编码组合的调制之后，坐标被交织。在调制中，复数符号（通常为二维）可以作为多维（通常大于二维）信号星座的元素而出现，在这种情况下，这些多维星座坐标是在帧中交错的那些。承载交织坐标的帧由第一和至少第二天线发送，整个帧的可能相对的子帧由相对的天线分开发送。在一些实施例中使用陪集选择器来最大化陪集中的坐标之间的最小汉明距离和/或最小欧氏距离以控制分集和/或编码增益。在一些实施例中，编码器和调制器的操作使得可允许代码字之间的最小坐标汉明距离和/或最小欧几里德距离最大化，和/或为允许的码字提供附加结构。描述了一种方法，发射机，系统和移动台。

9. 发明申请

WO2008124686A1 METHODS AND SYSTEMS FOR DETECTING A NARROW-BAND INTERFERER 审中-公开
标题翻译：用于检测窄带干扰器的方法和系统
公开(公告)号：WO2008124686A1
公开(公告)日：2008-10-16
申请号：PCT/US2008/059570
申请日：2008-04-07
申请人： OLYMPUS COMMUNICATION TECHNOLOBY OF AMERICA, INC. , IONESCU, Dumitru, Mihai , AMANULLAH, Abu , HEIARI-BATENI, Ghobad
发明人： IONESCU, Dumitru, Mihai , AMANULLAH, Abu , HEIARI-BATENI, Ghobad
IPC分类号： H04J11/00
CPC分类号： H04L27/2657 , H04J11/0066 , H04L27/2675 , H04L27/2691
摘要： Various embodiments of the systems and methods described herein may be used to compute a minimum variance unbiased estimator by receiving a first OFDM signal at a pilot tone, receiving a second OFDM signal sent in the same frequency band and determining a differential phase metric between the first OFDM signal and the second OFDM signal. In some embodiments, the differential phase metric may be used to diversity combine synchronization statistics. In various embodiments, the differential phase metric may be used to detect a narrow¬ band interference.
摘要翻译：本文描述的系统和方法的各种实施例可以用于通过以导频音接收第一OFDM信号来计算最小方差无偏估计器，接收在相同频带中发送的第二OFDM信号，并且确定第一 OFDM信号和第二OFDM信号。在一些实施例中，差分相位度量可用于分集组合同步统计。在各种实施例中，差分相位度量可用于检测窄带干扰。

10. 发明申请

WO2008121524A1 METHODS AND SYSTEMS FOR TRANSMITTING AND PROCESSING PILOT SIGNALS 审中-公开
标题翻译：发送和处理引航信号的方法和系统
公开(公告)号：WO2008121524A1
公开(公告)日：2008-10-09
申请号：PCT/US2008/056709
申请日：2008-03-12
申请人： OLYMPUS COMMUNICATION TECHNOLOGY OF AMERICA, INC. , IONESCU, Dumitru, Mihai
发明人： IONESCU, Dumitru, Mihai
IPC分类号： H04B1/707
CPC分类号： H04L25/0224 , H04L25/0242 , H04L25/025 , H04L25/03159
摘要： A system and method of transmitting and processing pilot signals includes decorrelating a pilot tone that conveys a pilot signal, performing a channel estimation based on the decorrelated pilot tone to calculate estimated channel values and positioning the estimated channel values consistent with their order in subsequent transmission units. In one embodiment, the decorrelation comprises an interleaving operation. In another embodiment, the decorrelation occurs during a channel estimation stage. The decorrelation can be performed during a channel estimation stage by interleaving and deinterleaving pilot signals in the receiver.
摘要翻译：发送和处理导频信号的系统和方法包括去相关于传送导频信号的导频音，基于去相关的导频音执行信道估计，以计算估计的信道值，并将与其顺序一致的估计信道值定位在随后的传输单元中。在一个实施例中，去相关包括交织操作。在另一个实施例中，去相关发生在信道估计阶段。可以在信道估计阶段通过在接收机中交织和解交织导频信号来进行解相关。

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