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    Apparatus and method for generating and decoding forward error correction codes having variable rate in a high-rate wireless data communication system
    1.
    发明申请
    Apparatus and method for generating and decoding forward error correction codes having variable rate in a high-rate wireless data communication system 有权
    用于在高速率无线数据通信系统中产生和解码具有可变速率的前向纠错码的装置和方法

    公开(公告)号：US20050160347A1

    公开(公告)日：2005-07-21

    申请号：US11038183

    申请日：2005-01-21

    申请人： Min-Goo Kim ,  Sang-Hyuck Ha ,  Young-Mo Gu

    发明人： Min-Goo Kim ,  Sang-Hyuck Ha ,  Young-Mo Gu

    IPC分类号： H03M13/37 ,  H03M13/03 ,  H04L1/00 ,  H04L5/02 ,  H04L25/497

    CPC分类号： H04L1/0066 ,  H03M13/271 ,  H03M13/2714 ,  H03M13/2957 ,  H03M13/6356 ,  H03M13/6362 ,  H04L1/0068 ,  H04L5/023 ,  H04L25/497

    摘要： An apparatus for generating Quasi-Complementary Duo-Binary Turbo Codes (QC-DBTC). The apparatus includes a QC-DBTC encoder which receives an information symbol stream and generates a plurality of systematic symbol streams and a plurality of parity symbol streams according to a given code rate. The apparatus further includes a quad-symbol mapper which quad-maps the systematic symbol streams to one symbol stream, a channel interleaver which independently interleaves the quad-mapped systematic symbol stream and the parity symbol streams, quad-demaps the quad-mapped systematic symbol stream, interlaces symbols in parity symbol streams, and serial-concatenates the quad-demapped systematic symbol stream to the interlaced parity symbol streams. A duo-binary turbo code generator is further provided to repeat the serial-concatenated symbol stream, and select a predetermined number of symbols from the repeated symbol stream according to a code rate and selection information, thereby generating QC-DBTC codes.

    摘要翻译： 一种用于产生准互补二进制Turbo码（QC-DBTC）的装置。 该装置包括QC-DBTC编码器，其接收信息符号流，并根据给定的码率产生多个系统符号流和多个奇偶校验符号流。 该装置还包括将系统符号流四维映射到一个符号流的四符号映射器，独立地交错四映射系统符号流和奇偶校验符号流的信道交织器，将四映射系统符号 流，在奇偶校验符号流中交织符号，并将四次映射映射的系统符号流串行连接到隔行扫描奇偶校验符号流。 进一步提供二进制二进制turbo码发生器以重复串联连接的符号流，并根据码率和选择信息从重复符号流中选择预定数量的码元，由此产生QC-DBTC码。

    Modulating and coding apparatus and method in a high-rate wireless data communication system
    4.
    发明申请
    Modulating and coding apparatus and method in a high-rate wireless data communication system 审中-公开
    高速率无线数据通信系统中的调制编码装置和方法

    公开(公告)号：US20050157803A1

    公开(公告)日：2005-07-21

    申请号：US11038181

    申请日：2005-01-21

    申请人： Min-Goo Kim ,  Sang-Hyuck Ha ,  Young-Mo Gu

    发明人： Min-Goo Kim ,  Sang-Hyuck Ha ,  Young-Mo Gu

    IPC分类号： H04L1/00 ,  H04L1/08 ,  H04L27/26 ,  H04K1/10

    CPC分类号： H04L1/0003 ,  H04L1/0009 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/08 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0046 ,  H04L5/006

    摘要： An apparatus and method for determining a modulation order of packet data to be transmitted through a subcarrier in a transmission apparatus. In the apparatus and method, transmitter physical channels encode and modulate data to transmit the user data with OFDM symbols. A controller outputs packet data to the transmitter physical channels, and determines the number of transmission slots, the number of OFDM symbols, the number of subchannels, and a size of an encoder packet. A modulation order and code rate decider receives, from the controller, the number of transmission slots, the number of OFDM symbols, the number of subchannels, and a size of an encoder packet, calculates a Modulation order Product code Rate (MPR), determines a modulation order according to the MPR, and outputs the determined modulation order to a corresponding physical channel.

    摘要翻译： 一种用于确定要在发送装置中通过副载波发送的分组数据的调制阶数的装置和方法。 在装置和方法中，发射机物理信道编码和调制数据以用OFDM符号发送用户数据。 控制器将分组数据输出到发射机物理信道，并且确定发送时隙的数量，OFDM符号的数量，子信道的数量以及编码器分组的大小。 调制次序和码率判定器从控制器接收发送时隙的数量，OFDM符号的数量，子信道的数量和编码器分组的大小，计算调制阶乘积码率（MPR），确定 根据MPR的调制顺序，并将所确定的调制顺序输出到对应的物理信道。

    Apparatus and method for generating and decoding forward error correction codes having variable rate in a high-rate wireless data communication system
    5.
    发明授权
    Apparatus and method for generating and decoding forward error correction codes having variable rate in a high-rate wireless data communication system 有权
    用于在高速率无线数据通信系统中产生和解码具有可变速率的前向纠错码的装置和方法

    公开(公告)号：US07523382B2

    公开(公告)日：2009-04-21

    申请号：US11038183

    申请日：2005-01-21

    申请人： Min-Goo Kim ,  Sang-Hyuck Ha ,  Young-Mo Gu

    发明人： Min-Goo Kim ,  Sang-Hyuck Ha ,  Young-Mo Gu

    IPC分类号： H03M13/00

    CPC分类号： H04L1/0066 ,  H03M13/271 ,  H03M13/2714 ,  H03M13/2957 ,  H03M13/6356 ,  H03M13/6362 ,  H04L1/0068 ,  H04L5/023 ,  H04L25/497

    摘要： An apparatus for generating Quasi-Complementary Duo-Binary Turbo Codes (QC-DBTC). The apparatus includes a QC-DBTC encoder which receives an information symbol stream and generates a plurality of systematic symbol streams and a plurality of parity symbol streams according to a given code rate. The apparatus further includes a quad-symbol mapper which quad-maps the systematic symbol streams to one symbol stream, a channel interleaver which independently interleaves the quad-mapped systematic symbol stream and the parity symbol streams, quad-demaps the quad-mapped systematic symbol stream, interlaces symbols in parity symbol streams, and serial-concatenates the quad-demapped systematic symbol stream to the interlaced parity symbol streams. A duo-binary turbo code generator is further provided to repeat the serial-concatenated symbol stream, and select a predetermined number of symbols from the repeated symbol stream according to a code rate and selection information, thereby generating QC-DBTC codes.

    摘要翻译： 一种用于产生准互补二进制Turbo码（QC-DBTC）的装置。 该装置包括QC-DBTC编码器，其接收信息符号流，并根据给定的码率产生多个系统符号流和多个奇偶校验符号流。 该装置还包括将系统符号流四维映射到一个符号流的四符号映射器，独立地交错四映射系统符号流和奇偶校验符号流的信道交织器，将四映射系统符号 流，在奇偶校验符号流中交织符号，并将四次映射映射的系统符号流串行连接到隔行扫描奇偶校验符号流。 进一步提供二进制二进制turbo码发生器以重复串联连接的符号流，并根据码率和选择信息从重复符号流中选择预定数量的码元，由此产生QC-DBTC码。

    Automatic gain control apparatus and method in an orthogonal frequency division multiple access system
    6.
    发明授权
    Automatic gain control apparatus and method in an orthogonal frequency division multiple access system 有权
    一种正交频分多址系统中的自动增益控制装置及方法

    公开(公告)号：US07822153B2

    公开(公告)日：2010-10-26

    申请号：US11348345

    申请日：2006-02-07

    申请人： Yong-Chul Song ,  Young-Mo Gu ,  Min-Goo Kim

    发明人： Yong-Chul Song ,  Young-Mo Gu ,  Min-Goo Kim

    IPC分类号： H04L27/06

    CPC分类号： H03G3/3063

    摘要： An automatic gain control (AGC) apparatus of a wireless mobile terminal, and method, in an orthogonal frequency division multiple access (OFDMA) system. A gain amplifier controls an amplification gain of received analog symbols. An analog-to-digital converter converts the received analog symbols into a digital signal. A fast Fourier transform (FFT) unit converts the digital signal into a frequency-domain signal. A power measurer measures power in the frequency domain in units of sub-carriers. A sub-carrier power accumulator detects a sub-carrier carrying a signal, and accumulates its power value. A sub-carrier average power measurer estimates an average power value transmitted per sub-carrier from the accumulated power value. A control means compares the estimated average power value with a reference power value, and generates a control signal used for controlling a gain of the gain amplifier according to the comparison result.

    摘要翻译： 一种在正交频分多址（OFDMA）系统中的无线移动终端的自动增益控制（AGC）装置和方法。 增益放大器控制接收的模拟符号的放大增益。 模数转换器将接收的模拟符号转换为数字信号。 快速傅里叶变换（FFT）单元将数字信号转换成频域信号。 功率测量器以子载波为单位测量频域的功率。 子载波功率累加器检测携带信号的子载波，并累加其功率值。 子载波平均功率测量器估计从累积功率值发送的每个副载波的平均功率值。 控制装置将估计的平均功率值与参考功率值进行比较，并且根据比较结果产生用于控制增益放大器的增益的控制信号。

    Method and apparatus for normalizing input metric to a channel decoder in a wireless communication system
    7.
    发明申请
    Method and apparatus for normalizing input metric to a channel decoder in a wireless communication system 有权
    用于在无线通信系统中将输入度量归一化到信道解码器的方法和装置

    公开(公告)号：US20070110191A1

    公开(公告)日：2007-05-17

    申请号：US11594991

    申请日：2006-11-09

    申请人： Sang-Hyo Kim ,  Min-Goo Kim ,  Young-Mo Gu

    发明人： Sang-Hyo Kim ,  Min-Goo Kim ,  Young-Mo Gu

    IPC分类号： H04L27/06

    CPC分类号： H04L27/0008 ,  H04B1/707 ,  H04L1/0052 ,  H04L1/0066 ,  H04L1/0075 ,  H04L25/067 ,  H04L27/2601

    摘要： An apparatus and method are provided for normalizing input soft metric to a channel decoder in a wireless communication system. A demapper generates soft metric using an in-phase component (Xk) and a quadrature component (Yk) of a received modulated symbol (Rk), a channel fading coefficient (gk) and a constant value (c) defined by a modulation order of the received modulated symbol. A normalizer receives the soft metric, computes a normalized log likelihood ratio (LLR) by multiplying the soft metric by a ratio of the constant value to a noise variance value, transforms the normalized LLR into a desired range and a desired number of bits, and outputs an input LLR of the channel decoder.

    摘要翻译： 提供了一种用于在无线通信系统中将输入软度量化到信道解码器的装置和方法。 解映射器使用接收的调制符号（R＆lt; k＆gt;）的同相分量（X SUB）和正交分量（Y SUB）来产生软度量， SUB>），信道衰落系数（g k）和由接收的调制符号的调制阶数定义的常数值（c）。 规范化器接收软度量，通过将软度量乘以常数值与噪声方差值的比率来计算归一化对数似然比（LLR），将归一化的LLR转换成期望的范围和期望的位数，以及 输出信道解码器的输入LLR。

    Method and apparatus for transmitting and receiving pilot signals in an orthogonal frequency division multiple access system
    9.
    发明申请
    Method and apparatus for transmitting and receiving pilot signals in an orthogonal frequency division multiple access system 审中-公开
    用于在正交频分多址系统中发送和接收导频信号的方法和装置

    公开(公告)号：US20050201270A1

    公开(公告)日：2005-09-15

    申请号：US11078620

    申请日：2005-03-14

    申请人： Seong-Wook Song ,  Young-Mo Gu ,  Min-Goo Kim

    发明人： Seong-Wook Song ,  Young-Mo Gu ,  Min-Goo Kim

    IPC分类号： H04J11/00 ,  H04B7/216

    CPC分类号： H04L27/2613 ,  H04L5/0007 ,  H04L5/005

    摘要： A method and apparatus are provided for transmitting and receiving pilot signals to estimate link gains and channels of neighboring base stations in an orthogonal frequency division multiple access (OFDMA) system. Each base station cyclically shifts a frequency domain signal of the same pseudo random (PN) code by a predetermined multiple of a time interval between pilots. A mobile terminal cyclically shifts a time domain pilot signal by a time interval between pilots associated with a base station with which the mobile terminal currently communicates in a reverse direction of cyclic shift of the base station, and estimates a channel and a link gain of the base station.

    摘要翻译： 提供一种用于发送和接收导频信号以估计正交频分多址（OFDMA）系统中相邻基站的链路增益和信道的方法和装置。 每个基站将相同伪随机（PN）码的频域信号周期性地将导频之间的时间间隔的预定倍数移位。 移动终端将时域导频信号循环移位与移动终端当前在基站的循环移位的相反方向上与之通信的基站相关联的导频之间的时间间隔，并估计基站的信道和链路增益 基站。

    Apparatus and method for decoding burst in an OFDMA mobile communication system
    10.
    发明授权
    Apparatus and method for decoding burst in an OFDMA mobile communication system 有权
    用于在OFDMA移动通信系统中解码突发的装置和方法

    公开(公告)号：US07747931B2

    公开(公告)日：2010-06-29

    申请号：US11519779

    申请日：2006-09-13

    申请人： Han-Ju Kim ,  Young-Mo Gu ,  Dong-Woon Jung ,  Min-Goo Kim

    发明人： Han-Ju Kim ,  Young-Mo Gu ,  Dong-Woon Jung ,  Min-Goo Kim

    IPC分类号： H03M13/03

    CPC分类号： H04L27/2647 ,  H04L1/0054 ,  H04L1/0059 ,  H04L1/0071 ,  H04L1/0072 ,  H04L1/08 ,  H04L5/023

    摘要： A decoding apparatus in an Orthogonal Frequency Division Multiple Access (OFDMA) mobile communication system is provided. In the apparatus comprises, a first combiner performs first combining on an input burst a first number of times. A deinterleaver deinterleaves an output of the first combiner and outputs a burst having a repeated structure. A second combiner performs second combining on the burst having the repeated structure a second number of times. A decoder decodes the combined burst. A signal detector stores a second internal memory state value of the decoder for an instance where a first decoded bit is extracted from the decoded data, stores a second internal memory state value of the decoder for an instance where a last decoded bit is extracted from the decoded data, compares the first and second stored internal memory state values of the decoder, and sets a burst quality indicator (BQI) according to the comparison result.

    摘要翻译： 提供了一种正交频分多址（OFDMA）移动通信系统中的解码装置。 在该装置中，第一组合器在输入突发上执行第一次合并。 解交织器对第一组合器的输出进行解交织并输出具有重复结构的脉冲串。 第二组合器在具有重复结构的脉冲串上执行第二次组合第二次。 解码器解码组合突发。 信号检测器存储解码器的第二内部存储器状态值，用于从解码数据中提取第一解码位的情况，存储解码器的第二内部存储器状态值，用于从其中提取最后一个解码位的情况 解码数据，比较解码器的第一和第二存储的内部存储器状态值，并根据比较结果设置突发质量指示符（BQI）。