知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

73 records (took 0.02 seconds)

    Systems and methods of performing data transmission and reception in a communication system
    14.
    发明授权
    Systems and methods of performing data transmission and reception in a communication system 有权

    公开(公告)号：US10979255B2

    公开(公告)日：2021-04-13

    申请号：US15774397

    申请日：2016-11-01

    Applicant: Miguel Lopez ,  Bo Hagerman

    Inventor： Miguel Lopez ,  Bo Hagerman

    IPC: H04L25/03 ,  H04W4/70 ,  H04L27/26

    Abstract: Systems and methods of performing data transmission and reception in a communication system are presented. In one exemplary embodiment, a method performed by a wireless device for transmitting a signal in a first communication system that is frequency-domain multiplexed with a second communication system may include generating (201), by a modulator (401), a modulated signal that represents one or more information symbols. The modulated signal may include one or more modulation symbols of the first communication system. The method may also include filtering (203), by a pulse shaping filter (403), the modulated signal to obtain the filtered modulated signal. The pulse shaping filter (403) may be configured to operate with a period that corresponds to the symbol rate of the second communication system. In addition, the method may include transmitting (209), by a transmitter (409), the filtered modulated signal at a carrier or sub-carrier frequency of the first communication system.

    Prefiltering in MIMO receiver
    15.
    发明授权
    Prefiltering in MIMO receiver 有权
    MIMO接收机中的预滤波

    公开(公告)号：US09590687B2

    公开(公告)日：2017-03-07

    申请号：US14408651

    申请日：2012-06-18

    Applicant: Henrik Sahlin ,  Miguel Lopez

    Inventor： Henrik Sahlin ,  Miguel Lopez

    IPC: H04L27/06 ,  H04B1/40 ,  H04B7/04 ,  H04L25/03 ,  H04L25/02

    CPC classification number: H04B1/40 ,  H04B7/0413 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/0246 ,  H04L25/03 ,  H04L25/03891 ,  H04L2025/03426

    Abstract: Data signals transmitted by a plurality of transmitting antennas over a radio channel are demodulated. The method comprises receiving (202) on a plurality of receiving antennas, a data signal and a reference signal, the contents of the reference signal being known a priori to the receiver. The contents of the reference signal are used for calculating (204) an estimated polynomial channel matrix. A polynomial pre-filter matrix is calculated (206, 208) by a decomposition of the estimated polynomial channel matrix into a product of a paraunitary polynomial matrix and an upper triangular polynomial matrix with minimum phase filters on its main diagonal, where the polynomial pre-filter matrix is obtained by calculating the paraconjugate of the paraunitary polynomial matrix. The received data signal is demodulated (212) where the received data signal is multiplied with the calculated polynomial pre-filter matrix.

    Abstract translation: 由无线电信道上的多个发送天线发送的数据信号被解调。 该方法包括在多个接收天线上接收（202）数据信号和参考信号，参考信号的内容先于接收机已知。 参考信号的内容用于计算（204）估计的多项式信道矩阵。 通过将估计的多项式信道矩阵分解为在其主对角线上具有最小相位滤波器的超幺多项式矩阵和上三角多项式矩阵的乘积来计算多项式预滤波器矩阵（206,208），其中多项式预滤波器矩阵 滤波矩阵是通过计算超幺正多项式矩阵的附属函数得到的。 接收的数据信号被解调（212），其中所接收的数据信号与计算的多项式预滤波器矩阵相乘。

    Data modulation
    16.
    发明授权
    Data modulation 有权
    数据调制

    公开(公告)号：US09444672B2

    公开(公告)日：2016-09-13

    申请号：US13512973

    申请日：2009-12-21

    Applicant: Dennis Hui ,  Miguel Lopez

    Inventor： Dennis Hui ,  Miguel Lopez

    IPC: H04K1/02 ,  H04L12/56 ,  H04L27/36 ,  H04L1/00 ,  H04L27/34

    CPC classification number: H04L27/36 ,  H04L1/0041 ,  H04L27/3405

    Abstract: A modulator includes a symbol mapper that is configured to map respective bits sets of a bit sequence corresponding to a burst and including data, training, tail, and guard bits into respective symbols to form a symbol sequence of data, training, tail, and guard symbols. A vector precoder is configured to apply a vector precoding transformation to the data and training symbols to form precoded symbols. These precoded symbols are combined with the tail and guard symbols in a symbol processor to form a sequence of transmit symbols. The record precoding conducted by the modulator of a transmitter enables improved link performance without the cost of increased processing complexity of the receiver algorithm.

    Abstract translation: 调制器包括符号映射器，其被配置为将与突发相对应的比特序列的各个比特组映射到包括数据，训练，尾部和保护比特到相应符号中以形成数据，训练，尾部和后卫的符号序列 符号。 向量预编码器被配置为向数据和训练符号应用向量预编码变换以形成预编码符号。 这些预编码符号与符号处理器中的尾部和保护符号组合以形成发送符号序列。 由发射机的调制器执行的记录预编码器能够改善链路性能，而不会增加接收机算法的处理复杂度。

    Multi-user multiple input multiple output radio communications
    17.
    发明授权
    Multi-user multiple input multiple output radio communications 有权
    多用户多输入多输出无线电通信

    公开(公告)号：US09172445B2

    公开(公告)日：2015-10-27

    申请号：US13572930

    申请日：2012-08-13

    Applicant: Miguel Lopez ,  Mårten Sundberg ,  Olof Liberg

    Inventor： Miguel Lopez ,  Mårten Sundberg ,  Olof Liberg

    IPC: H04L5/14 ,  H04B7/04 ,  H04W72/04 ,  H04L27/18

    CPC classification number: H04B7/0452 ,  H04L27/18 ,  H04L27/3461 ,  H04W72/048

    Abstract: A radio communications system conducts radio communications using basic physical channels. Each basic physical channel defines a time slot and a radio frequency for transmission. Radio communication is established between a radio base station and multiple UEs over the same basic physical channel. Three or four subchannels are provided in the same basic physical channel to simultaneously support three or four full rate UE communications, seven or eight half rate UE communications, or other equivalent combinations. A first baseband transmitter chain can map full rate data corresponding to first and second full rate UE communications (or equivalent) as adaptive quadrature phase shift keying, AQPSK, signals onto a first and a second of the three subchannels. A second baseband transmitter chain can map full rate data corresponding to a third and/or fourth full rate UE communication (or equivalent) as phase shifted signals onto a third of the three subchannels.

    Abstract translation: 无线电通信系统使用基本物理信道进行无线电通信。 每个基本物理信道定义一个时隙和一个射频用于传输。 通过相同的基本物理信道在无线电基站和多个UE之间建立无线电通信。 三个或四个子信道被提供在相同的基本物理信道中以同时支持三个或四个全速率UE通信，七个或八个半速率UE通信或其他等效组合。 第一基带发射机链可以将对应于第一和第二全速率UE通信（或等效的）的全速率数据映射为三个子信道中的第一和第二个上的自适应正交相移键控（AQPSK）信号。 第二基带发射机链可以将对应于第三和/或第四全速率UE通信（或等效物）的全速率数据映射为三个子信道中的三分之一的相移信号。

    Prefiltering in MIMO Receiver
    18.
    发明申请
    Prefiltering in MIMO Receiver 有权
    MIMO接收机中的预滤波

    公开(公告)号：US20150303970A1

    公开(公告)日：2015-10-22

    申请号：US14408651

    申请日：2012-06-18

    Applicant: Henrik Sahlin ,  Miguel Lopez

    Inventor： Henrik Sahlin ,  Miguel Lopez

    IPC: H04B1/40 ,  H04B7/04 ,  H04L25/02 ,  H04L25/03

    CPC classification number: H04B1/40 ,  H04B7/0413 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/0246 ,  H04L25/03 ,  H04L25/03891 ,  H04L2025/03426

    Abstract: Data signals transmitted by a plurality of transmitting antennas over a radio channel are demodulated. The method comprises receiving (202) on a plurality of receiving antennas, a data signal and a reference signal, the contents of the reference signal being known a priori to the receiver. The contents of the reference signal are used for calculating (204) an estimated polynomial channel matrix. A polynomial pre-filter matrix is calculated (206, 208) by a decomposition of the estimated polynomial channel matrix into a product of a paraunitary polynomial matrix and an upper triangular polynomial matrix with minimum phase filters on its main diagonal, where the polynomial pre-filter matrix is obtained by calculating the paraconjugate of the paraunitary polynomial matrix. The received data signal is demodulated (212) where the received data signal is multiplied with the calculated polynomial pre-filter matrix.

    Abstract translation: 由无线电信道上的多个发送天线发送的数据信号被解调。 该方法包括在多个接收天线上接收（202）数据信号和参考信号，参考信号的内容先于接收机已知。 参考信号的内容用于计算（204）估计的多项式信道矩阵。 通过将估计的多项式信道矩阵分解为在其主对角线上具有最小相位滤波器的超幺多项式矩阵和上三角多项式矩阵的乘积来计算多项式预滤波器矩阵（206,208），其中多项式预滤波器矩阵 滤波矩阵是通过计算超幺正多项式矩阵的附属函数得到的。 接收的数据信号被解调（212），其中所接收的数据信号与计算的多项式预滤波器矩阵相乘。

    Report mechanism in a radio system reusing one time-slot
    19.
    发明授权
    Report mechanism in a radio system reusing one time-slot 有权
    无线电系统中的报告机制重用一个时隙

    公开(公告)号：US09112598B2

    公开(公告)日：2015-08-18

    申请号：US12864797

    申请日：2008-11-12

    Applicant: Benny Lennartson ,  Tomas Andersson ,  Miguel Lopez

    Inventor： Benny Lennartson ,  Tomas Andersson ,  Miguel Lopez

    IPC: H04B10/293 ,  H04B17/00

    CPC classification number: H04B17/318

    Abstract: In a radio system node, such as a Base Transceiver Station (BTS), a compensation unit is provided to convert information about downlink signal strength in a measurement report received from a mobile station when the signal to the mobile station is transmitted using several co-channel signals transmitted simultaneously in the same time slot and at the same frequency.

    Abstract translation: 在诸如基站收发台（BTS）的无线电系统节点中，提供了一种补偿单元，用于当使用几个共同信号发送到移动站的信号时，将从移动台接收的测量报告中的关于下行链路信号强度的信息进行转换， 在同一时隙同频发射的信道信号。

    Method and arrangement in a telecommunication system
    20.
    发明授权
    Method and arrangement in a telecommunication system 有权
    电信系统中的方法和布置

    公开(公告)号：US08731121B2

    公开(公告)日：2014-05-20

    申请号：US13014090

    申请日：2011-01-26

    Applicant: Miguel Lopez ,  Henrik Sahlin

    Inventor： Miguel Lopez ,  Henrik Sahlin

    IPC: H04B1/10

    CPC classification number: H04L25/0224 ,  H04L27/2605

    Abstract: By exploiting the multi-block structure of the used slot format having a training sequence in the time domain and at least one pre-coded user data block to sequentially reconstruct the slot, using in the first act known symbols and using detected symbols in each subsequent act and improved receiver may be provided. This may result in less ISI/IBI and therefore increased performance.

    Abstract translation: 通过利用在时域中具有训练序列的所使用的时隙格式的多块结构和至少一个预编码的用户数据块来顺序地重构时隙，在第一动作中使用已知的符号并且在每个后续的步骤中使用检测到的符号 可以提供动作和改进的接收器。 这可能导致较少的ISI / IBI，从而提高性能。

Patent Agency Ranking