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39 条记录 (耗时 0.022 秒)

    Digital radio frequency (RF) receiver
    1.
    发明授权
    Digital radio frequency (RF) receiver 有权
    数字射频（RF）接收机

    公开(公告)号：US09294135B2

    公开(公告)日：2016-03-22

    申请号：US13609638

    申请日：2012-09-11

    申请人： Ik Soo Eo ,  Sang-Kyun Kim ,  Mun Yang Park ,  Seon-Ho Han ,  Hyun Kyu Yu

    发明人： Ik Soo Eo ,  Sang-Kyun Kim ,  Mun Yang Park ,  Seon-Ho Han ,  Hyun Kyu Yu

    IPC分类号： H04B1/00

    CPC分类号： H04B1/0021

    摘要： A digital RF receiver does not use a separate receiver according to a mode and a band for multi-mode reception, MIMO reception, and bandwidth extension reception, and changes only setting variables in a single receiver structure so as to implement multi-mode reception, MIMO reception, bandwidth extension reception, and/or simultaneous multi-mode operation, such that complexity of the receiver, development cost, and power consumption can be reduced.

    摘要翻译： 数字RF接收机根据用于多模式接收，MIMO接收和带宽扩展接收的模式和频带不使用单独的接收机，并且仅改变单个接收机结构中的设置变量以便实现多模式接收， MIMO接收，带宽扩展接收和/或同时多模式操作，从而可以减少接收机的复杂性，开发成本和功耗。

    Method for flexible bit rate code vector generation and wideband vocoder employing the same
    3.
    发明授权
    Method for flexible bit rate code vector generation and wideband vocoder employing the same 失效
    用于灵活比特率码矢量生成的方法和采用该方法的宽带声码器

    公开(公告)号：US07529663B2

    公开(公告)日：2009-05-05

    申请号：US11216430

    申请日：2005-08-30

    申请人： Kyung-Jin Byun ,  Ik-Soo Eo ,  Kyung-Soo Kim ,  Hee-Bum Jung

    发明人： Kyung-Jin Byun ,  Ik-Soo Eo ,  Kyung-Soo Kim ,  Hee-Bum Jung

    IPC分类号： G10L19/12 ,  G10L19/10

    CPC分类号： G10L19/107 ,  G10L19/24

    摘要： Provided are a flexible bit rate code vector generation method and a wideband vocoder employing the same. This invention implements a flexible bit rate by getting three code vectors which are composed of 24, 16, and 8 pulses, at a time in a search process, through improvement of an algebraic codebook search process in a wideband AMR-WB vocoder. The method includes the steps of: performing a preprocess, wherein the preprocess divides a sub-frame by tracks and decides a pulse position having a maximum value in each track; among a plurality of pulses to be searched, fixing a same number of pulses as the tracks to the position with the maximum value of each track sequentially, and searching optimal positions having a minimum error with a target signal by combining two pulses in two consecutive tracks for the remaining pulses; and creating a code vector with flexible bit rate.

    摘要翻译： 提供了一种灵活的比特率码矢量生成方法和采用该方法的宽带声码器。 本发明通过在宽带AMR-WB声码器中改进代数码本搜索处理，通过在搜索过程中一次获得由24,16和8脉冲组成的三个码向量来实现灵活的比特率。 该方法包括以下步骤：执行预处理，其中预处理通过磁道划分子帧，并确定每个磁道中具有最大值的脉冲位置; 在要搜索的多个脉冲之间，将相同数量的脉冲固定到具有每个磁道的最大值的位置，并且通过在两个连续的轨道中组合两个脉冲来搜索具有目标信号的最小误差的最佳位置 剩下的脉冲; 并创建一个具有灵活位速率的码矢量。

    Method for flexible bit rate code vector generation and wideband vocoder employing the same
    5.
    发明申请
    Method for flexible bit rate code vector generation and wideband vocoder employing the same 失效

    公开(公告)号：US20060116872A1

    公开(公告)日：2006-06-01

    申请号：US11216430

    申请日：2005-08-30

    申请人： Kyung-Jin Byun ,  Ik-Soo Eo ,  Kyung-Soo Kim ,  Hee-Bum Jung

    发明人： Kyung-Jin Byun ,  Ik-Soo Eo ,  Kyung-Soo Kim ,  Hee-Bum Jung

    IPC分类号： G10L19/12

    CPC分类号： G10L19/107 ,  G10L19/24

    摘要： Provided are a flexible bit rate code vector generation method and a wideband vocoder employing the same. This invention implements a flexible bit rate by getting three code vectors which are composed of 24, 16, and 8 pulses, at a time in a search process, through improvement of an algebraic codebook search process in a wideband AMR-WB vocoder. The method includes the steps of: performing a preprocess, wherein the preprocess divides a sub-frame by tracks and decides a pulse position having a maximum value in each track; among a plurality of pulses to be searched, fixing a same number of pulses as the tracks to the position with the maximum value of each track sequentially, and searching optimal positions having a minimum error with a target signal by combining two pulses in two consecutive tracks for the remaining pulses; and creating a code vector with flexible bit rate.

    Synchronizing circuit
    6.
    发明授权
    Synchronizing circuit 失效
    同步电路

    公开(公告)号：US5974102A

    公开(公告)日：1999-10-26

    申请号：US929692

    申请日：1997-09-15

    申请人： Ik Soo Eo ,  Kwang Il Yeon ,  In Gi Lim

    发明人： Ik Soo Eo ,  Kwang Il Yeon ,  In Gi Lim

    IPC分类号： H03K19/003 ,  G06F5/06 ,  H04L7/00 ,  H04L7/02

    CPC分类号： H04L7/02 ,  G06F5/06 ,  H04L7/0008

    摘要： In case microcontroller and digital signal processing blocks are used together in one chip, there has been a problem in which the synchronization of the clocks are not consistent with each other when sending a signal from one block to another. In addition, when a reference clock is activated during a change of input signal, an incomplete interval has occurred. Accordingly, in order to solve the above mentioned problem, the present invention discloses a synchronizing circuit which uses a latch circuit("RS") consisted of NAND gates to synchronize an asynchronous input data and a reference clock, thereby solving the problem in which an incomplete interval occurs.

    摘要翻译： 在单片机和数字信号处理块在一个芯片中一起使用的情况下，存在当从一个块向另一个块发送信号时时钟的同步彼此不一致的问题。 另外，当在输入信号变化期间激活参考时钟时，发生了不完整的间隔。 因此，为了解决上述问题，本发明公开了一种使用由NAND门构成的锁存电路（“RS”）同步异步输入数据和参考时钟的同步电路，由此解决了 不完整间隔发生。

    Blind channel estimation in an orthogonal frequency division multiplexing system
    7.
    发明授权
    Blind channel estimation in an orthogonal frequency division multiplexing system 有权
    正交频分复用系统盲信道估计

    公开(公告)号：US07929620B2

    公开(公告)日：2011-04-19

    申请号：US11634276

    申请日：2006-12-05

    申请人： Tae Joon Kim ,  Ik Soo Eo ,  Hee Bum Jung

    发明人： Tae Joon Kim ,  Ik Soo Eo ,  Hee Bum Jung

    IPC分类号： H04L27/28 ,  H04J11/00

    CPC分类号： H04L25/0238 ,  H04L25/0212 ,  H04L25/0248

    摘要： A method for stable channel estimation to increase frequency band efficiency that is lost by using a pilot, and to reduce the complexity and the sensitivity to channel zero. The method includes generating an i-th symbol block Si including N carriers, performing an inverse fast Fourier transform (IFFT) operation on the i-th symbol block, and forming an orthogonal frequency division multiplexing (OFDM) symbol block. The method also includes attaching a guard interval sample in front of the i-th OFDM symbol block Ui and forming at least one OFDM symbol block Ui,cp. The method further includes modeling the formed OFDM symbol block Ui,cp with a channel finite impulse response (FIR) filter and estimating channel impulse response using signals yi received through a channel.

    摘要翻译： 一种用于稳定信道估计的方法，以增加使用导频丢失的频带效率，并降低对信道零的复杂度和灵敏度。 该方法包括生成包括N个载波的第i个符号块Si，对第i个符号块执行快速傅里叶逆变换（IFFT），并形成正交频分复用（OFDM）符号块。 该方法还包括在第i个OFDM符号块Ui的前面附加保护间隔样本并形成至少一个OFDM符号块U 1，c p。 该方法还包括使用信道有限脉冲响应（FIR）滤波器对形成的OFDM符号块Ui，cp进行建模，并且使用通过信道接收的信号y i来估计信道脉冲响应。

    Multi-input multi-output system and method for demodulating a transmitting vector in a receiver of the system
    8.
    发明授权
    Multi-input multi-output system and method for demodulating a transmitting vector in a receiver of the system 失效
    用于解调系统的接收机中的发射矢量的多输入多输出系统和方法

    公开(公告)号：US07787555B2

    公开(公告)日：2010-08-31

    申请号：US11739209

    申请日：2007-04-24

    申请人： Tae Joon Kim ,  Ik Soo Eo ,  Hyoun Kuk Kim ,  Hyun Cheol Park

    发明人： Tae Joon Kim ,  Ik Soo Eo ,  Hyoun Kuk Kim ,  Hyun Cheol Park

    IPC分类号： H04K1/10 ,  H04L27/28 ,  H04L1/02 ,  H04B7/02 ,  H04B7/08

    CPC分类号： H04B7/0434

    摘要： Provided is a receiver of a multi-input multi-output system using multiple antennas, the receiver including: a first multiplying unit for multiplying a vector r received via the antenna by a Hermitian matrix Q; a candidate transmitting vector generating unit for detecting a signal on a lowest modulation order transmitting antenna from the received vector y output from the first multiplying unit, creating as many symbol candidates as the modulation order of the detected signal, and generating a candidate transmitting vector using each symbol candidate; a transmitting vector determining unit for obtaining a distance between each candidate transmitting vector generated by the candidate transmitting vector generating unit and the received vector y to determine a final transmitting vector; and a demodulating unit for demodulating the final transmitting vector determined by the transmitting vector determining unit. Since the receiver detects a transmitting vector with reference to a signal on a lowest modulation order transmitting antenna, the receiver can have a simpler structure.

    摘要翻译： 提供了一种使用多个天线的多输入多输出系统的接收机，所述接收机包括：第一乘法单元，用于将通过所述天线接收的矢量r乘以Hermitian矩阵Q; 候选发射矢量产生单元，用于从从第一乘法单元输出的接收矢量y中检测最低调制阶发射天线上的信号，创建与检测信号的调制阶数一样多的符号候选，并使用 每个符号候选人; 发送矢量确定单元，用于获得由候选发射矢量生成单元生成的每个候选发射矢量与接收矢量y之间的距离，以确定最终发射矢量; 以及解调单元，用于解调由发送矢量确定单元确定的最终发送矢量。 由于接收机参考最低调制阶发射天线上的信号检测发射矢量，所以接收机可以具有更简单的结构。

    Apparatus for searching multipath in spread spectrum communications system and method thereof
    9.
    发明授权
    Apparatus for searching multipath in spread spectrum communications system and method thereof 有权
    用于在扩频通信系统中搜索多路径的装置及其方法

    公开(公告)号：US07194018B2

    公开(公告)日：2007-03-20

    申请号：US10211416

    申请日：2002-08-01

    申请人： Kyung-tae Han ,  Ik-soo Eo ,  Hae-bum Jung ,  Kyung-soo Kim

    发明人： Kyung-tae Han ,  Ik-soo Eo ,  Hae-bum Jung ,  Kyung-soo Kim

    IPC分类号： H04B1/69

    CPC分类号： H04B1/7113 ,  H04B1/7117

    摘要： A multipath searching device includes a radio front-end for converting a received radio signal into a baseband signal and for outputting the baseband signal. A profile calculating unit is included for calculating and outputting the multipath profile of the baseband signal. A first detector determines whether or not the radio signal traveled along a multipath is having a short-delay path by comparing the peak value of the multipath profile with a profile value of a predetermined position time interval before or after the peak of the multipath profile. A path selector receives the multipath profile and the detection result of the first detector, generates time delay information for each path, and separates many paths along which the radio signal traveled. A receiving unit receives the time delay information of the paths, despreads the baseband signal, and combines despread signals.

    摘要翻译： 多路径搜索装置包括用于将接收的无线电信号转换为基带信号并用于输出基带信号的无线电前端。 包括用于计算和输出基带信号的多径分布的简档计算单元。 第一检测器通过将多径分布的峰值与多径分布的峰值之前或之后的预定位置时间间隔的轮廓值进行比较来确定沿着多路径行进的无线电信号是否具有短延迟路径。 路径选择器接收多路径分布和第一检测器的检测结果，为每个路径生成时间延迟信息，并分离出无线电信号行进的许多路径。 接收单元接收路径的时间延迟信息，解扩基带信号，并组合解扩信号。