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    Channel code decoding for the CDMA forward link
    1.
    发明授权
    Channel code decoding for the CDMA forward link 失效

    公开(公告)号：US06996385B2

    公开(公告)日：2006-02-07

    申请号：US10260226

    申请日：2002-09-27

    Applicant: Geoffrey G. Messier ,  Witold A. Krzymien

    Inventor： Geoffrey G. Messier ,  Witold A. Krzymien

    IPC: H04B17/00

    CPC classification number: H04B1/7103 ,  H04B2201/70702 ,  H04L1/0045 ,  H04L1/0618 ,  H04L1/20 ,  H04L25/0212

    Abstract: Channel coding is used on the forward link of a CDMA cellular telephone network to allow the CDMA mobile channel decoder to perform error correction. On a wireless link, channel code performance is improved by providing the channel decoder with an estimate of the reliability of each received symbol. This reliability information is typically the ratio of desired signal energy to interference plus noise variance at the channel decoder input. This invention improves CDMA mobile channel decoder performance using a new technique for calculating more accurate estimates of the signal to interference plus noise ratio at the input of the mobile channel decoder.

    QUANTIZATION OF CHANNEL STATE INFORMATION IN MULTIPLE ANTENNA SYSTEMS
    4.
    发明申请
    QUANTIZATION OF CHANNEL STATE INFORMATION IN MULTIPLE ANTENNA SYSTEMS 有权
    多天线系统中信道状态信息的量化

    公开(公告)号：US20120114024A1

    公开(公告)日：2012-05-10

    申请号：US13289957

    申请日：2011-11-04

    Applicant: Bartosz Mielczarek ,  Witold A. Krzymien

    Inventor： Bartosz Mielczarek ,  Witold A. Krzymien

    IPC: H04B1/38

    CPC classification number: H04B7/0452 ,  H04B7/0434 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0658 ,  H04B7/066 ,  H04L1/0029 ,  H04L1/003 ,  H04L1/0687 ,  H04L1/0693 ,  H04L25/0206

    Abstract: A method of transmission over multiple wireless channels in a multiple antenna system includes storing channel modulation matrices at a transmitter; receiving quantized channel state information at the transmitter from plural receivers; selecting a transmission modulation matrix using the quantized channel state information from the stored channel modulation matrices; and transmitting over the multiple channels to the plural receivers using the selected transmission modulation matrix. In another embodiment, the method includes storing, at one or more receivers, indexes of modulation matrices generated by a capacity enhancing algorithm; upon a selected one of the one or more receivers receiving a transmission from the transmitter, the selected receiver selecting a modulation matrix from the stored modulation matrices that optimizes transmission between the transmitter and the selected receiver; the selected receiver sending an index representing the selected modulation matrix; and receiving the index at the transmitter from the selected receiver.

    Abstract translation: 在多天线系统中通过多个无线信道进行传输的方法包括在发射机处存储信道调制矩阵; 在多个接收机处在发射机处接收量化信道状态信息; 使用来自所存储的信道调制矩阵的量化信道状态信息来选择传输调制矩阵; 并且使用所选择的发送调制矩阵在多个信道上发送到多个接收机。 在另一个实施例中，该方法包括在一个或多个接收机处存储由容量增强算法产生的调制矩阵的索引; 在所述一个或多个接收机中从所述发射机接收到传输的所选择的一个接收机中，所选择的接收机从所存储的调制矩阵中选择调制矩阵，所述调制矩阵优化所述发射机和所选接收机之间的传输 所选择的接收机发送表示所选调制矩阵的索引; 以及从所选接收机接收发射机处的索引。

    Quantization of channel state information in multiple antenna systems
    6.
    发明授权
    Quantization of channel state information in multiple antenna systems 有权

    公开(公告)号：US08891702B2

    公开(公告)日：2014-11-18

    申请号：US13289957

    申请日：2011-11-04

    Applicant: Bartosz Mielczarek ,  Witold A. Krzymien

    Inventor： Bartosz Mielczarek ,  Witold A. Krzymien

    IPC: H04B7/10 ,  H04B7/06 ,  H04B7/04 ,  H04L1/06 ,  H04L1/00 ,  H04L25/02

    Abstract: A method of transmission over multiple wireless channels in a multiple antenna system includes storing channel modulation matrices at a transmitter; receiving quantized channel state information at the transmitter from plural receivers; selecting a transmission modulation matrix using the quantized channel state information from the stored channel modulation matrices; and transmitting over the multiple channels to the plural receivers using the selected transmission modulation matrix. In another embodiment, the method includes storing, at one or more receivers, indexes of modulation matrices generated by a capacity enhancing algorithm; upon a selected one of the one or more receivers receiving a transmission from the transmitter, the selected receiver selecting a modulation matrix from the stored modulation matrices that optimizes transmission between the transmitter and the selected receiver; the selected receiver sending an index representing the selected modulation matrix; and receiving the index at the transmitter from the selected receiver.

    QUANTIZED CHANNEL STATE INFORMATION PREDICTION IN MULTIPLE ANTENNA SYSTEMS
    8.
    发明申请
    QUANTIZED CHANNEL STATE INFORMATION PREDICTION IN MULTIPLE ANTENNA SYSTEMS 有权
    多个天线系统的量化信道状态信息预测

    公开(公告)号：US20110280324A1

    公开(公告)日：2011-11-17

    申请号：US13190354

    申请日：2011-07-25

    Applicant: Bartosz Mielczarek ,  Witold A. Krzymien

    Inventor： Bartosz Mielczarek ,  Witold A. Krzymien

    IPC: H04L27/00

    CPC classification number: H04W24/10 ,  H03M13/47 ,  H03M13/612 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/0658 ,  H04L1/20

    Abstract: A CSI vector quantizer (VQ) system is provided for time-correlated channels. The VQ system operates a receiver forwarding quantized channel state information in the form of indices and a transmitter predicting channel state change. The VQ system is aimed at feedback channels, in which bit errors, erasures and delays can occur. The VQ system uses transmitter-side channel prediction algorithms that work with the quantized CSI information and allow the system to recover from feedback channel transmission errors, erasures and delays. Moreover, the techniques can be used to lower the required feedback rate, while keeping the system's throughput at the required level.

    Abstract translation: 为时间相关信道提供CSI矢量量化器（VQ）系统。 VQ系统操作接收机以索引的形式转发量化的信道状态信息和预测信道状态变化的发射机。 VQ系统旨在反馈信道，其中可能发生位错误，擦除和延迟。 VQ系统使用发射机侧信道预测算法与量化的CSI信息一起工作，并允许系统从反馈信道传输错误，擦除和延迟中恢复。 此外，这些技术可以用于降低所需的反馈速率，同时将系统的吞吐量保持在所需的水平。

    Quantization of channel state information in multiple antenna systems
    9.
    发明授权
    Quantization of channel state information in multiple antenna systems 有权
    多天线系统中信道状态信息的量化

    公开(公告)号：US08116391B2

    公开(公告)日：2012-02-14

    申请号：US11754965

    申请日：2007-05-29

    Applicant: Bartosz Mielczarek ,  Witold A. Krzymien

    Inventor： Bartosz Mielczarek ,  Witold A. Krzymien

    IPC: H04K1/10

    CPC classification number: H04B7/0452 ,  H04B7/0434 ,  H04B7/0456 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0658 ,  H04B7/066 ,  H04L1/0029 ,  H04L1/003 ,  H04L1/0687 ,  H04L1/0693 ,  H04L25/0206

    Abstract: A new vector quantization algorithm for reducing bit rate used for channel state information feedback in a variety of multiple antenna systems on flat and frequency selective channels. The receiver chooses an instantaneous capacity maximizing entry from a small finite set of predefined covariance matrices. The codebook of covariance matrices is constructed based on separate optimization of the channel eigenmodes and power division between them. If, for the given channel realization, one of the predefined covariance matrices provides higher capacity than equal power distribution the indexes of the two codebooks are fed to the transmitter, otherwise, the transmitter uses the open-loop approach. A vector quantization algorithm in which receiver chooses an instantaneous throughput maximizing modulation matrix from a finite set of predefined matrices (code-words). The codebook of modulation matrices is constructed based on joint optimization of the dominant channel eigenmodes of users and separate quantization of power levels.

    Abstract translation: 一种新的矢量量化算法，用于降低在平坦和频率选择性信道上的各种多个天线系统中用于信道状态信息反馈的比特率。 接收机从预定协方差矩阵的小有限集合中选择瞬时容量最大化条目。 协方差矩阵的码本是基于信道本征模的分离优化和它们之间的功率分配构成的。 如果对于给定的信道实现，预定义的协方差矩阵之一提供比等功率分配更高的容量，则将两个码本的索引馈送到发射机，否则，发射机使用开环方法。 一种矢量量化算法，其中接收机从有限的一组预定义矩阵（码字）中选择最大化调制矩阵的瞬时吞吐量。 调制矩阵的码本是基于用户的主要信道本征模式的联合优化和功率电平的单独量化来构建的。

    Scheduling of wireless packet data transmissions
    10.
    发明授权
    Scheduling of wireless packet data transmissions 失效
    无线分组数据传输的调度

    公开(公告)号：US07295513B2

    公开(公告)日：2007-11-13

    申请号：US10669151

    申请日：2003-09-23

    Applicant: Robert C. Elliott ,  Witold A. Krzymien

    Inventor： Robert C. Elliott ,  Witold A. Krzymien

    IPC: G01R31/08 ,  G06F11/00 ,  G08C15/00

    CPC classification number: H04W72/1226 ,  H04L12/1881 ,  H04L12/189 ,  H04W72/1247

    Abstract: A method for scheduling packet data transmissions in a wireless communication system is described wherein a priority function is based on a channel state indicator (CSI), the projected average throughput of the users, and a tuning parameter designed to control the throughput and fairness characteristics of the scheduling algorithm. The method also considers fairness criteria dictated by predetermined Quality of Service (QoS) requirements. The channel state indicator may be a Requested Data Rate (RDR) or Carrier-to-Interference ratio (C/I) information. The base station calculates a priority function for the multiple mobile users. Each priority function is a function of the CSI, the projected average throughput of a given mobile user, the average projected throughput over a set of users, and the tuning parameter.

    Abstract translation: 描述了一种用于在无线通信系统中调度分组数据传输的方法，其中优先级功能基于信道状态指示符（CSI），用户的预计平均吞吐量以及调整参数，该调整参数旨在控制吞吐量和公平性 调度算法。 该方法还考虑了由预定的服务质量（QoS）要求所规定的公平性标准。 信道状态指示符可以是请求数据速率（RDR）或载波干扰比（C / I）信息。 基站计算多个移动用户的优先级功能。 每个优先级功能是CSI的功能，给定移动用户的预计平均吞吐量，一组用户的平均预计吞吐量以及调谐参数。

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