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    Method and apparatus for block-wise decision-feedback equalization for wireless communication
    1.
    发明专利
    Method and apparatus for block-wise decision-feedback equalization for wireless communication 有权
    用于无线通信的块式决策反馈均衡的方法和装置

    公开(公告)号：JP2011103673A

    公开(公告)日：2011-05-26

    申请号：JP2010279315

    申请日：2010-12-15

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： WEI YONGBIN ,  KIM BYOUNG-HOON ,  MALLADI DURGA PRASAD

    IPC: H03H21/00 ,  H04B7/005 ,  H04J99/00

    CPC classification number: H04L25/03063 ,  H04L25/03057 ,  H04L25/03159

    Abstract: PROBLEM TO BE SOLVED: To provide decision feedback equalization techniques to perform equalization in a manner to achieve good performance in a communication system. SOLUTION: A channel impulse response is estimated and converted to obtain a channel frequency response and a feed-forward filter response is derived on the basis of the channel frequency response and an initialized feedback correlation matrix. A feedback filter response is obtained similarly on the basis of the channel frequency response and the initialized feedback correlation matrix. On the basis of the feed-forward and feedback filter responses, equalization for an input symbol is executed, the equalized symbol is sliced for acquiring a chip estimate. If equalization is performed for multiple iterations, then, for each iteration, a reliability parameter may be updated, the feed-forward and feedback filter responses may be derived on the basis of the updated reliability parameter, and equalization may be performed with the filter responses for the iteration. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供判决反馈均衡技术以在通信系统中实现良好性能的方式执行均衡。 解决方案：估计和转换信道脉冲响应以获得信道频率响应，并且基于信道频率响应和初始化的反馈相关矩阵导出前馈滤波器响应。 基于信道频率响应和初始化的反馈相关矩阵类似地获得反馈滤波器响应。 基于前馈和反馈滤波器响应，执行输入符号的均衡，对均衡的符号进行分片以获得芯片估计。 如果对多次迭代执行均衡，则对于每个迭代，可以更新可靠性参数，可以基于更新的可靠性参数导出前馈和反馈滤波器响应，并且可以利用滤波器​​响应来执行均衡 用于迭代。 版权所有（C）2011，JPO＆INPIT

    Method and system for channel equalization
    2.
    发明专利
    Method and system for channel equalization 有权
    信道均衡的方法和系统

    公开(公告)号：JP2011125030A

    公开(公告)日：2011-06-23

    申请号：JP2010287683

    申请日：2010-12-24

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： MALLADI DURGA PRASAD ,  KIM BYOUNG-HOON ,  WEI YONGBIN

    IPC: H04B1/7097 ,  H04B7/005

    CPC classification number: H04L25/03006 ,  H04L25/022 ,  H04L25/0228 ,  H04L2025/03375 ,  H04L2025/03783

    Abstract: PROBLEM TO BE SOLVED: To simplify computational complexity in correcting a signal transmitted via a channel by estimating the behavior of the channel.
    SOLUTION: The method includes receiving a signal transmitted over a channel. The received signal includes a known signal and an information signal. The method further includes determining at least one indicator indicative of channel characteristics based on at least a portion of the partly known signal. The method further includes generating a first value indicative of the information signal based on at least one indicator being partly channel characteristics. The first value includes an error signal. The method further includes removing the error signal from the first estimate of the signal based on at least the portion of the partly known signal.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：通过估计信道的行为来简化校正通过信道发送的信号的计算复杂度。 解决方案：该方法包括接收通过信道发送的信号。 所接收的信号包括已知信号和信息信号。 该方法还包括基于部分已知信号的至少一部分来确定指示信道特性的至少一个指示符。 该方法还包括基于部分信道特性的至少一个指示符来生成指示信息信号的第一值。 第一个值包括一个错误信号。 该方法还包括至少部分已知信号的部分从信号的第一估计中去除误差信号。 版权所有（C）2011，JPO＆INPIT

    Transmit format selection with consideration for resource reuse
    3.
    发明专利
    Transmit format selection with consideration for resource reuse 审中-公开
    发送格式选择考虑资源重用

    公开(公告)号：JP2011142655A

    公开(公告)日：2011-07-21

    申请号：JP2011027648

    申请日：2011-02-10

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： KIM BYOUNG-HOON ,  MALLADI DURGA PRASAD ,  SARKAR SANDIP

    IPC: H04J99/00 ,  H04W72/04 ,  H04W28/06 ,  H04W28/18

    CPC classification number: H04L1/0036 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/16 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0037 ,  H04L5/006

    Abstract: PROBLEM TO BE SOLVED: To provide techniques for selecting transmit formats in a manner to account for the degrees of resource reuse for multiple data streams sent simultaneously from multiple antennas. SOLUTION: The degree of resource reuse for each data stream indicates the amount of reuse of resources (e.g., orthogonal codes or subcarriers) observed by the data stream. Interference estimates for the multiple data streams are derived based on an initial resource assignment. The degrees of resource reuse are determined based on the interference estimates and are used to derive at least one correction factor (410). Then, at least one transmit format is selected for the data streams using the at least one correction factor (420). In accordance with a transmit format that indicates the amount of resources in use for the data stream and other parameters, resources are assigned to each data stream (430). COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供以考虑从多个天线同时发送的多个数据流的资源重用程度来选择发送格式的技术。 解决方案：每个数据流的资源重用程度指示由数据流观察到的资源（例如，正交码或子载波）的重用量。 基于初始资源分配导出多个数据流的干扰估计。 基于干扰估计来确定资源重用程度，并且用于导出至少一个校正因子（410）。 然后，使用至少一个校正因子（420）为数据流选择至少一个发送格式。 根据指示数据流和其他参数使用的资源量的发送格式，资源被分配给每个数据流（430）。 版权所有（C）2011，JPO＆INPIT

    Coded-bit scrambling for multi-stream communication in mimo channel
    4.
    发明专利
    Coded-bit scrambling for multi-stream communication in mimo channel 审中-公开
    MIMO通道中多通道通信的编码位扫描

    公开(公告)号：JP2010283839A

    公开(公告)日：2010-12-16

    申请号：JP2010142699

    申请日：2010-06-23

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： KIM BYOUNG-HOON

    IPC: H04J99/00 ,  H04B1/707 ,  H04B7/04 ,  H04J11/00 ,  H04W16/28

    CPC classification number: H04L1/0041 ,  H04B1/7103 ,  H04B7/02 ,  H04B2201/709709 ,  H04L1/0045 ,  H04L1/0069 ,  H04L1/0071

    Abstract: PROBLEM TO BE SOLVED: To prevent degenerative decoding performance of MIMO when channel coefficient vectors of multiplexed stream are relatively close or correlated. SOLUTION: A multi-input/output system includes a receiver, a processor, a bit scrambler, a bit descrambler, and a transmitter. The receiver generates demodulated symbol streams corresponding to a received signal. The processor generates coded bit sequences from source bit streams when operating in a transmit mode and bit log-likelihood ratio sequences from the information bit streams when operating in a receive mode. The bit scrambler scrambles the bit sequences to generate scrambled bit streams when in the transmit mode, and descrambles the log-likelihood ratio sequences by a real-valued descrambling sequence when operating in the receive mode, to remove the scrambling sequence. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：为了防止多路复用流的信道系数向量相对较近或相关的MIMO的退化解码性能。 解决方案：多输入/输出系统包括接收器，处理器，位加扰器，位解扰器和发射器。 接收机产生对应于接收信号的解调符号流。 当在接收模式下操作时，处理器在发送模式下工作时从源比特流生成编码比特序列，并从信息比特流中产生比特对数似然比序列。 位加扰器在发送模式时对比特序列进行加扰以产生加扰比特流，并且当以接收模式操作时通过实值解扰序列解扰对数似然比序列，以去除加扰序列。 版权所有（C）2011，JPO＆INPIT

    Transmisión MIMO con precodificación dependiente del rango
    8.
    发明专利
    Transmisión MIMO con precodificación dependiente del rango 未知

    公开(公告)号：ES2715276T3

    公开(公告)日：2019-06-03

    申请号：ES08729468

    申请日：2008-02-08

    Applicant: QUALCOMM INC

    Inventor： KIM BYOUNG-HOON ,  XU HAO

    IPC: H04L1/06 ,  H04L25/03

    Abstract: Un aparato para comunicación inalámbrica, que comprende: medios para obtener (612) un vector de precodificación para una transmisión de rango 1 de un primer conjunto que comprende al menos un vector de columna de una matriz unitaria; medios para realizar (614) precodificación para la transmisión de rango 1 basada en el vector de precodificación; medios para obtener (616) una matriz de precodificación para una transmisión de rango 2 de un segundo conjunto que comprende una matriz de identidad y una o más matrices unitarias; y medios para realizar (618) precodificación para la transmisión de rango 2 basada en la matriz de precodificación.

    Transmisión de información mediante secuencias desplazadas cíclicamente
    9.
    发明专利
    Transmisión de información mediante secuencias desplazadas cíclicamente 未知

    公开(公告)号：ES2712089T3

    公开(公告)日：2019-05-09

    申请号：ES08727540

    申请日：2008-01-10

    Applicant: QUALCOMM INC

    Inventor： MALLADI DURGA PRASAD ,  KIM BYOUNG-HOON

    IPC: H04J11/00 ,  H04L27/26

    Abstract: Un procedimiento para comunicación inalámbrica, que comprende: usar (1016) una primera secuencia para intercambiar información en un primer intervalo de tiempo, estando modulada la primera secuencia por la primera información, en el que la primera secuencia para intercambiar información comprende generar una primera secuencia modulada basándose en una primera secuencia y en un primer símbolo de modulación y enviar K símbolos para la primera secuencia modulada en K subportadoras consecutivas en un primer intervalo de tiempo; y utilizar (1018) una segunda secuencia para intercambiar información en un segundo intervalo de tiempo en el que usar la segunda secuencia para intercambiar información comprende generar una segunda secuencia modulada basándose en la segunda secuencia y en un segundo símbolo de modulación, y enviar K símbolos para la segunda secuencia modulada en K subportadoras consecutivas en el segundo intervalo de tiempo, siendo la segunda secuencia un desplazamiento cíclico de la primera secuencia y estando modulada por la segunda información, y que comprende además: generar la primera secuencia desplazando cíclicamente una secuencia base una primera cantidad; y generar la segunda secuencia desplazando cíclicamente la secuencia base una segunda cantidad, en el que el desplazamiento cíclico para las secuencias primera y segunda se determina basándose en un patrón de salto específico de la célula.

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