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    MULTI-TERM DEMAPPING FOR MULTI-CHANNEL WIRELESS COMMUNICATION
    12.
    发明申请
    MULTI-TERM DEMAPPING FOR MULTI-CHANNEL WIRELESS COMMUNICATION 有权
    多通道无线通信多用途解决方案

    公开(公告)号：US20110206151A1

    公开(公告)日：2011-08-25

    申请号：US12711128

    申请日：2010-02-23

    申请人： Michael L. McCloud ,  Matthias Brehler ,  Ju Won Park ,  Jong Hyeon Park ,  Je Woo Kim ,  Inyup Kang ,  Brian C. Banister

    发明人： Michael L. McCloud ,  Matthias Brehler ,  Ju Won Park ,  Jong Hyeon Park ,  Je Woo Kim ,  Inyup Kang ,  Brian C. Banister

    IPC分类号： H04L1/02 ,  H04L27/06

    CPC分类号： H04L25/03229 ,  H04B7/0413 ,  H04L25/03242 ,  H04L25/03318 ,  H04L2025/0342 ,  H04L2025/03426

    摘要： Providing for reduced complexity or improved accuracy in de-mapping received wireless data streams for multi-channel wireless communication is described herein. By way of example, a low-complexity likelihood algorithm can be employed to de-map data bits from the wireless data streams. In one particular example, the likelihood algorithm can approximate a received bit with a subset of received wireless symbols correlated the bit, reducing algorithm complexity. In other examples, a limited set of received wireless symbols can be employed for the subset, further reducing algorithm complexity. According to at least one other example, logarithmic terms of the algorithm can be approximated with non-logarithmic functions, such as a look-up table, series expansion, polynomial approximation, or the like. These approximations can enhance symbol de-mapping accuracy while maintaining or improving processing overhead for a wireless receiver.

    摘要翻译： 本文描述了为了解复用用于多信道无线通信的接收的无线数据流而提供降低的复杂度或提高的精度。 作为示例，可以采用低复杂度似然算法来从无线数据流解映射数据比特。 在一个特定示例中，似然算法可以用接收到的无线符号的子集近似接收到的比特，从而降低算法的复杂度。 在其他示例中，可以对该子集采用有限的一组接收到的无线符号，进一步降低了算法的复杂度。 根据至少另一个示例，算法的对数项可以用非对数函数来近似，例如查找表，串联展开，多项式近似等。 这些近似可以增强符号解映射精度，同时保持或改善无线接收机的处理开销。

    METHODS AND SYSTEMS FOR EFFECTIVE CHANNEL ESTIMATION IN OFDM SYSTEMS
    14.
    发明申请
    METHODS AND SYSTEMS FOR EFFECTIVE CHANNEL ESTIMATION IN OFDM SYSTEMS 有权
    OFDM系统中有效信道估计的方法与系统

    公开(公告)号：US20090285317A1

    公开(公告)日：2009-11-19

    申请号：US12123408

    申请日：2008-05-19

    申请人： Je Woo Kim ,  Bok Tae Sim ,  Ju Won Park ,  Tae Ryun Chang ,  Jong Hyeon Park

    发明人： Je Woo Kim ,  Bok Tae Sim ,  Ju Won Park ,  Tae Ryun Chang ,  Jong Hyeon Park

    IPC分类号： H04L27/28

    CPC分类号： H04L25/0216 ,  H04L25/022 ,  H04L27/2647

    摘要： A method and apparatus for channel estimation in wireless communications are provided. After an initial channel estimation and an estimation of the effective channel length (ECL) are performed, a weighting based on the ECL may be applied in an effort to remove noise from the initial channel estimate and provide an estimated channel with increased accuracy. Different weightings may apply for different channel lengths. A threshold may be used during the ECL estimation, and the threshold may be predetermined or calculated in an effort to adapt to different channel environments.

    摘要翻译： 提供了一种用于无线通信中信道估计的方法和装置。 在执行初始信道估计和有效信道长度（ECL）的估计之后，可以应用基于ECL的加权来努力去除初始信道估计中的噪声，并提供具有增加的精度的估计信道。 不同的加权可能适用于不同的通道长度。 在ECL估计期间可以使用阈值，并且可以预先确定或计算阈值以努力适应不同的信道环境。

    METHODS AND APPARATUS FOR SIGNAL AND TIMING DETECTION IN WIRELESS COMMUNICATION SYSTEMS
    16.
    发明申请
    METHODS AND APPARATUS FOR SIGNAL AND TIMING DETECTION IN WIRELESS COMMUNICATION SYSTEMS 有权
    无线通信系统中信号和时序检测的方法与装置

    公开(公告)号：US20080107220A1

    公开(公告)日：2008-05-08

    申请号：US11925719

    申请日：2007-10-26

    申请人： Ju Won Park ,  Jong Hyeon Park ,  Je Woo Kim

    发明人： Ju Won Park ,  Jong Hyeon Park ,  Je Woo Kim

    IPC分类号： H04L7/02

    CPC分类号： H04L27/2662 ,  H04L27/2613 ,  H04L27/2676

    摘要： In accordance with a detection method in a wireless communication system, an initial hypothesis for a starting position of a desired signal within a received wireless communication signal may be determined. The desired signal may have a conjugate symmetric property. At least one correlation value may be determined based on the initial hypothesis. The at least one correlation value may indicate the extent to which at least one sample sequence selected from the received signal has the conjugate symmetric property.

    摘要翻译： 根据无线通信系统中的检测方法，可以确定在所接收的无线通信信号内的期望信号的起始位置的初始假设。 期望的信号可以具有共轭对称性质。 可以基于初始假设来确定至少一个相关值。 所述至少一个相关值可指示从接收信号中选择的至少一个采样序列具有共轭对称性质的程度。

    Methods and systems for hybrid MIMO schemes in OFDM/A systems
    17.
    发明授权
    Methods and systems for hybrid MIMO schemes in OFDM/A systems 失效
    OFDM / A系统中混合MIMO方案的方法和系统

    公开(公告)号：US08666004B2

    公开(公告)日：2014-03-04

    申请号：US12124955

    申请日：2008-05-21

    申请人： Je Woo Kim ,  Jong Hyeon Park ,  Tae Ryun Chang ,  Ju Won Park

    发明人： Je Woo Kim ,  Jong Hyeon Park ,  Tae Ryun Chang ,  Ju Won Park

    IPC分类号： H04L1/02

    CPC分类号： H04B7/0871 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0857

    摘要： Certain embodiments of the present disclosure provide a hybrid receiver diversity scheme that involves combining received signals in accordance with a combination of multiple receive diversity schemes. Certain embodiments of the present disclosure provide a hybrid transmit diversity scheme that involves transmitting diversity signals to a receiver according to a transmit diversity scheme selected based on signal quality measurements received from the receiver.

    摘要翻译： 本公开的某些实施例提供了一种混合接收机分集方案，其涉及根据多个接收分集方案的组合来组合接收到的信号。 本公开的某些实施例提供了一种混合发射分集方案，其涉及根据从接收机接收的信号质量测量选择的发射分集方案向接收机发送分集信号。

    MULTI INPUT MULTI OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (OFDMA) COMMUNICATION SYSTEM
    18.
    发明申请
    MULTI INPUT MULTI OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (OFDMA) COMMUNICATION SYSTEM 有权
    多输入多输出（MIMO）正交频分多址（OFDMA）通信系统

    公开(公告)号：US20120163306A1

    公开(公告)日：2012-06-28

    申请号：US13172369

    申请日：2011-06-29

    申请人： Jong Hyeon Park ,  Ju Won Park ,  Je Woo Kim

    发明人： Jong Hyeon Park ,  Ju Won Park ,  Je Woo Kim

    IPC分类号： H04B7/04 ,  H04W72/04

    CPC分类号： H04L1/0015 ,  H04B7/0417 ,  H04B7/0608 ,  H04B7/0689 ,  H04B7/0814 ,  H04B7/0871 ,  H04L1/0001 ,  H04L1/06 ,  H04L27/2608

    摘要： An embodiment of the present invention is a technique to process signals in a communication system. In one embodiment, a plurality of signal processing units processes signals received from a plurality of antennae. The signal processor units are controlled by operational mode control signals. A channel estimator estimates channel responses using the processed signals according to an operational mode. An equalizer and combiner generates an equalized and combined signal using the received signals and the estimated channel responses. A Carrier to Interference Noise Ratio (CINR) estimator estimates CINR from the equalized and combined signal. The estimated CINR is used to generate the operational mode control signals. In another embodiment, a sub-carrier allocation controller generates sub-carrier allocation signals using an allocation base. A channel status information (CSI) and multiple input multiple output (MIMO) controller generates sub-carrier CSI signals and operational mode control signals using the sub-carrier allocation signals, estimated channel responses provided by a channel estimator, and an estimated CINR provided by an CINR estimator. The operational mode control signals select one of a plurality of antenna paths associated with a plurality of antennae. A transmitter diversity processor generates transmitter diversity signals as a function of at least a mapped signal Mk, the sub-carrier CSI signals, and the operational mode control signals.

    摘要翻译： 本发明的实施例是一种在通信系统中处理信号的技术。 在一个实施例中，多个信号处理单元处理从多个天线接收的信号。 信号处理器单元由操作模式控制信号控制。 信道估计器根据操作模式使用经处理的信号估计信道响应。 均衡器和组合器使用接收的信号和估计的信道响应产生均衡和组合的信号。 载波干扰噪声比（CINR）估计器从均衡和组合信号估计CINR。 估计的CINR用于产生操作模式控制信号。 在另一实施例中，子载波分配控制器使用分配基地产生副载波分配信号。 信道状态信息（CSI）和多输入多输出（MIMO）控制器使用子载波分配信号，由信道估计器提供的估计信道响应和估计的信道估计CINR产生副载波CSI信号和操作模式控制信号 CINR估计器。 操作模式控制信号选择与多个天线相关联的多个天线路径之一。 发射机分集处理器产生作为至少映射信号Mk，子载波CSI信号和操作模式控制信号的函数的发射机分集信号。

    DECODING SCHEME USING MULTIPLE HYPOTHESES ABOUT TRANSMITTED MESSAGES
    19.
    发明申请
    DECODING SCHEME USING MULTIPLE HYPOTHESES ABOUT TRANSMITTED MESSAGES 有权
    使用关于传输信息的多个假设来解码方案

    公开(公告)号：US20090175387A1

    公开(公告)日：2009-07-09

    申请号：US11969857

    申请日：2008-01-04

    申请人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park ,  Chun Woo Lee ,  Tae Ryun Chang

    发明人： Jong Hyeon Park ,  Bok Tae Sim ,  Je Woo Kim ,  Serguei A. Glazko ,  Sameer Nanavati ,  Ju Won Park ,  Chun Woo Lee ,  Tae Ryun Chang

    IPC分类号： H04L27/06

    CPC分类号： H04L1/0054 ,  H04L1/006 ,  H04L1/0072

    摘要： A method and apparatus for decoding encoded data bits of a wireless communication transmission are provided. A set of a-priori bit values corresponding to known bit values of the encoded data bits may be generated. Decoding paths that correspond to decoded data bits that are inconsistent with the a-priori bit values may be removed from the possible decoding paths to consider, and decoding the encoded data bits by selecting a decoding path from remaining decoding paths of the possible decoding paths that were not removed. Multiple hypotheses, each corresponding to a different set of a-prior bit values may be evaluated, with the decoded data for a hypothesis selected based on the evaluation output for further processing.

    摘要翻译： 提供了一种用于解码无线通信传输的编码数据位的方法和装置。 可以生成对应于编码数据位的已知位值的一组先验位值。 可以从可能的解码路径中去除对应于与先验比特值不一致的解码数据比特的解码路径，并且通过从可能的解码路径的剩余解码路径中选择解码路径来解码编码数据比特， 没有删除。 可以评估每个对应于先前比特值的不同集合的多个假设，其中基于用于进一步处理的评估输出选择的假设的解码数据。

    Multi input multi output (MIMO) orthogonal frequency division multiple access (OFDMA) communication system
    20.
    发明授权
    Multi input multi output (MIMO) orthogonal frequency division multiple access (OFDMA) communication system 有权
    多输入多输出（MIMO）正交频分多址（OFDMA）通信系统

    公开(公告)号：US08406335B2

    公开(公告)日：2013-03-26

    申请号：US13172369

    申请日：2011-06-29

    申请人： Jong Hyeon Park ,  Ju Won Park ,  Je Woo Kim

    发明人： Jong Hyeon Park ,  Ju Won Park ,  Je Woo Kim

    IPC分类号： H04B7/02 ,  H04B7/08 ,  H04B7/06 ,  H04L27/00

    CPC分类号： H04L1/0015 ,  H04B7/0417 ,  H04B7/0608 ,  H04B7/0689 ,  H04B7/0814 ,  H04B7/0871 ,  H04L1/0001 ,  H04L1/06 ,  H04L27/2608

    摘要： The present disclosure includes techniques to process signals in a communication system, in which multiple signal processing units process signals received from multiple antennae. The signal processor units are controlled by operational-mode control signals, which are generated using an estimated Carrier-to-Interference-Noise-Ratio (CINR). The estimated CINR is generated using an equalized and combined signal, which is generated from the received signals and the estimated channel responses using the processed signals according to an operational mode. In another embodiment, a controller generates sub-carrier allocation signals using an allocation base. A channel status information (CSI) and multiple-input-multiple-output (MIMO) controller generates sub-carrier CSI signals and operational-mode control signals using the sub-carrier allocation signals, estimated channel responses, and estimated CINR. The operational-mode control signals select one of multiple antenna paths. A transmitter-diversity processor generates transmitter-diversity signals as a function of at least a mapped signal, sub-carrier CSI signals, and operational mode control signals.

    摘要翻译： 本公开包括在通信系统中处理信号的技术，其中多个信号处理单元处理从多个天线接收的信号。 信号处理器单元由使用估计的载波干扰噪声比（CINR）产生的操作模式控制信号来控制。 使用根据操作模式使用经处理的信号的接收信号和估计的信道响应产生的均衡和组合信号来产生估计的CINR。 在另一实施例中，控制器使用分配基地产生副载波分配信号。 信道状态信息（CSI）和多输入多输出（MIMO）控制器使用子载波分配信号，估计的信道响应和估计的CINR来产生副载波CSI信号和操作模式控制信号。 操作模式控制信号选择多个天线路径之一。 发射机分集处理器产生作为至少映射信号，子载波CSI信号和操作模式控制信号的函数的发射机分集信号。