公开(公告)号：US20060078059A1

公开(公告)日：2006-04-13

申请号：US11246566

申请日：2005-10-11

申请人： Kwang-Man Ok ,  Chung-Gu Kang ,  Min-Goo Kim ,  Wi-Sang Rho

发明人： Kwang-Man Ok ,  Chung-Gu Kang ,  Min-Goo Kim ,  Wi-Sang Rho

IPC分类号： H04K1/10

CPC分类号： H04L27/2608

摘要： An apparatus and method for allocating transmission power of a subchannel for each individual user in an orthogonal frequency division multiple access (OFDMA) system. The apparatus and method comprises determining the number-of-transmission bits per symbol approximating an estimated signal-to-interference ratio (SIR) for each of subchannels when transmission power is uniformly allocated to the subchannels; and calculating a required SIR corresponding to the number-of-transmission bits per symbol, and allocating transmission power to each of the subchannels according to the required SIR.

摘要翻译： 一种用于在正交频分多址（OFDMA）系统中为每个单独用户分配子信道的发射功率的装置和方法。 该装置和方法包括：当发送功率被均匀地分配给子信道时，确定每个码元的传送比数近似每个子信道的估计的信号干扰比（SIR）; 以及计算与每个符号的传送比数相对应的所需SIR，并根据所需要的SIR将发送功率分配给每个子信道。

公开(公告)号：US20060018250A1

公开(公告)日：2006-01-26

申请号：US11185968

申请日：2005-07-21

申请人： Young-Mo Gu ,  Min-Goo Kim ,  Sung-Soo Kim

发明人： Young-Mo Gu ,  Min-Goo Kim ,  Sung-Soo Kim

IPC分类号： H04J11/00

CPC分类号： H04L5/0048 ,  H04L5/006 ,  H04L5/0085 ,  H04L25/0226 ,  H04L25/0244 ,  H04L27/2607

摘要： A system and method for effectively providing an adaptive modulation scheme and known-cyclic prefix (CP) technology in an orthogonal frequency division multiplexing (OFDM) communication system. An OFDM transmission system variably generates a known CP while considering a channel state. Pilot subcarrier position information for generating the known CP is sent to a transmitter. Pilot subcarriers are selected on the basis of a channel state of an OFDM symbol through which data is transmitted and the known CP is generated, such that data transmission is provided efficiently.

摘要翻译： 一种用于在正交频分复用（OFDM）通信系统中有效提供自适应调制方案和已知循环前缀（CP）技术的系统和方法。 在考虑信道状态的同时，OFDM传输系统可变地生成已知的CP。 用于产生已知CP的导频副载波位置信息被发送到发射机。 基于通过其发送数据并生成已知CP的OFDM符号的信道状态来选择导频子载波，使得有效地提供数据传输。

公开(公告)号：US20050128934A1

公开(公告)日：2005-06-16

申请号：US11003338

申请日：2004-12-06

申请人： Young-Mo Gu ,  Min-Goo Kim ,  Soon-Jae Choi

发明人： Young-Mo Gu ,  Min-Goo Kim ,  Soon-Jae Choi

IPC分类号： H04B7/155 ,  H04J11/00 ,  H04L27/26

CPC分类号： H04J13/0048 ,  H04J13/18 ,  H04L27/2602

摘要： Disclosed is a transmission/reception apparatus and method for providing compatibility between Code Division Multiple Access (CDMA) and Orthogonal Frequency Division Multiplexing (OFDM) in a forward link. The proposed transmission/reception apparatus and method uses a traffic channel based on OFDM while using a pilot channel and a sync channel used in the CDMA scheme. Thus, a transmitter adds a pilot channel signal and a sync channel signal to OFDM-modulated symbols before transmission, and a receiver acquires a pilot channel signal and a sync channel signal, and removes them from a received signal, thereby outputting only pure OFDM-modulated symbols.

摘要翻译： 公开了一种用于在前向链路中提供码分多址（CDMA）和正交频分复用（OFDM）之间的兼容性的发送/接收装置和方法。 所提出的发送/接收装置和方法使用基于OFDM的业务信道，同时使用CDMA方案中使用的导频信道和同步信道。 因此，发射机在发射前向OFDM调制的符号添加导频信道信号和同步信道信号，并且接收机获取导频信道信号和同步信道信号，并将其从接收信号中去除，从而仅输出纯OFDM- 调制符号。

公开(公告)号：US20050078641A1

公开(公告)日：2005-04-14

申请号：US10963540

申请日：2004-10-14

申请人： Min-Goo Kim

发明人： Min-Goo Kim

IPC分类号： H04B7/155 ,  H04J3/24 ,  H04L1/16 ,  H04L1/18 ,  H04B7/216

CPC分类号： H04L1/1829 ,  H04J3/24 ,  H04L1/16

摘要： An apparatus and method for transmitting Walsh information over a packet data control channel in a base station of a mobile communication system that transmits packet data and has the packet data control channel for transmitting control information related to transmission of packet data. Receivers decode reverse ACK channel (R-ACKCH) signals received from corresponding mobile stations, and count the number of NAKs from the decoded information. A Walsh mask broadcasting controller receives the number of NAKs from the receivers, and outputs a Walsh mask information broadcasting enable signal if the number of NAKs is larger than a predetermined threshold. A transmitter generates and broadcasts Walsh mask information of the base station upon receiving the Walsh mask information broadcasting enable signal.

摘要翻译： 一种用于在发送分组数据的移动通信系统的基站中的分组数据控制信道上发送沃尔什信息的装置和方法，并具有用于发送与分组数据的发送有关的控制信息的分组数据控制信道。 接收机解码从对应的移动站接收的反向ACK信道（R-ACKCH）信号，并根据解码的信息对NAK的数目进行计数。 沃尔什掩模广播控制器从接收器接收NAK的数量，并且如果NAK的数量大于预定阈值，则输出沃尔什掩模信息广播使能信号。 接收到沃尔什掩模信息广播使能信号时，发射机产生并广播基站的沃尔什掩模信息。

公开(公告)号：US06661282B2

公开(公告)日：2003-12-09

申请号：US10217963

申请日：2002-08-13

申请人： Sang-Hyuck Ha ,  Min-Goo Kim

发明人： Sang-Hyuck Ha ,  Min-Goo Kim

IPC分类号： H03D300

CPC分类号： H04L27/38 ,  H04L25/067

摘要： Disclosed is a 16-ary QAM (Quadrature Amplitude Modulation) demodulation apparatus for receiving an input signal Rk(Xk, Yk) comprised of a kth quadrature-phase component Yk and a kth in-phase component Xk, and generating soft values &Lgr;(sk,0), &Lgr;(sk,1), &Lgr;(sk,2) and &Lgr;(sk,3) for the input signal Rk(Xk, Yk) by a soft decision means. A first calculator decides a soft value &Lgr;(sk,2) of a third demodulated symbol among 4 demodulated symbols by subtracting a distance 2a between two demodulated symbols on the same axis of a mapping table from a level |Yk| of the quadrature-phase component Yk. A second calculator decides a soft value &Lgr;(sk,3) of a fourth demodulated symbol by calculating Yk+&agr;*Zk using a first variable a determined by the soft value of the third demodulated symbol and a sign bit of the quadrature-phase component Yk. A third calculator decides a soft value &Lgr;(sk,0) of a first demodulated symbol by subtracting the distance 2a from a level |Xk| of the in-phase component Xk. A fourth calculator decides a soft value &Lgr;(sk,1) of a second demodulated symbol by calculating Xk+&bgr;*Z′k using a second variable &bgr; determined by the soft value of the first demodulated symbol and a sign bit of the in-phase component Xk.

摘要翻译： 公开了一种16进制QAM（正交幅度调制）解调装置，用于接收包括ak个正交相分量Yk和ak +同相分量Xk的输入信号Rk（Xk，Yk），并产生软 通过软判定装置对输入信号Rk（Xk，Yk）的值λ（s1，...），λ（sk，1），λ（sk，2）和λ（sk，3）。 第一计算器通过从映射表的相同轴上减去两个解调符号之间的距离2a来确定第四解调符号中的第三解调符号的软值Lambda（sk，2） 的正交相分量Yk。 第二计算器通过使用由第三解调符号的软值确定的第一变量a和正交相位分量的符号位来计算Yk +α* Zk来确定第四解调符号的软值Lambda（sk，3） YK。 第三计算器通过从水平| Xk |减去距离2a来确定第一解调符号的软值Lambda（sk，0） 的同相分量Xk。 第四计算器通过使用由第一解调符号的软值确定的第二变量β和相关的第一解调符号的符号位来计算Xk +β* Z'k来确定第二解调符号的软值Lambda（sk，1） 相位分量Xk。

公开(公告)号：US06621873B1

公开(公告)日：2003-09-16

申请号：US09475559

申请日：1999-12-30

申请人： Young-Hwan Lee ,  Min-Goo Kim ,  Beong-Jo Kim

发明人： Young-Hwan Lee ,  Min-Goo Kim ,  Beong-Jo Kim

IPC分类号： H04L2720

CPC分类号： H04L1/0059 ,  H03M13/2957 ,  H03M13/6362 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/0069 ,  H04L1/007

摘要： A puncturing device for a turbo encoder in a mobile communication system having a turbo encoder which turbo encodes input source data into a plurality of information frames and tail symbols at a given code rate is disclosed. The puncturing device comprises a frame generator for generating a transmission frame by performing puncturing and adding invalid symbols; and a controller for performing puncturing on the information frames according to the code rate, puncturing the tail symbols only when the number of punctured information frames and tail symbols exceeds a bit number according to a symbol rate, and otherwise, controlling the frame generator by reading a puncturing pattern according to the code rate and information about the number of invalid symbols.

摘要翻译： 公开了一种具有涡轮编码器的移动通信系统中的turbo编码器的穿孔装置，其将输入源数据以编码速率编码为多个信息帧和尾符号。 所述删截装置包括帧生成器，用于通过执行删截和添加无效符号来生成传输帧; 以及控制器，用于根据码率对信息帧执行删截，只有当删截的信息帧和尾符号的数目根据符号率超过位数时才对尾符号进行删截，否则，通过读取来控制帧生成器 根据代码率的打孔图案和关于无效符号的数量的信息。

公开(公告)号：US06615385B1

公开(公告)日：2003-09-02

申请号：US09475684

申请日：1999-12-30

申请人： Min-Goo Kim ,  Beong-Jo Kim ,  Young-Hwan Lee ,  Soon-Jae Choi

发明人： Min-Goo Kim ,  Beong-Jo Kim ,  Young-Hwan Lee ,  Soon-Jae Choi

IPC分类号： H03M1329

CPC分类号： H03M13/2975 ,  H03M13/09 ,  H03M13/27

摘要： An iterative decoder and iterative decoding method. In the iterative decoder, a first adder has a first port for receiving information symbols and a second port. A first component decoder which is coupled to the first adder, receives first parity symbols and decodes the information symbols using first parity symbols and an output signal of the first adder. A first subtractor has a third port for receiving the output of the first component decoder, and a fourth port. An interleaver which is coupled to the output of the first subtractor, interleaves the decoded information symbols received from the first component decoder. A second component decoder receives the output of the interleaver and second parity symbols and decodes the information symbols of the interleaver output using the received signals. A deinterleaver deinterleaves the output of the second component decoder. A second subtractor has a fifth port for receiving the output of the deinterleaver and a sixth port for receiving an inverted output of the first subtractor. The output of the second subtractor is connected to the second port and an inverted output of the second subtractor is connected to the fourth port. A hard decision device converts the decoded symbols received from the first component decoder to binary information bits. An error detector checks errors in the binary information bits received from the hard decision device and generates a no error signal if no errors are detected. An output buffer stores the binary information bits received from the hard decision device and outputs the stored binary information bits in response to the no error signal.

摘要翻译： 迭代解码和迭代解码方法。 在迭代解码器中，第一加法器具有用于接收信息符号的第一端口和第二端口。 耦合到第一加法器的第一分量解码器接收第一奇偶校验符号并使用第一奇偶校验符号和第一加法器的输出信号对信息符号进行解码。 第一减法器具有用于接收第一分量解码器的输出的第三端口和第四端口。 耦合到第一减法器的输出的交织器交错从第一分量解码器接收的解码信息符号。 第二分量解码器接收交织器的输出和第二奇偶校验符号，并使用接收的信号对交织器输出的信息符号进行解码。 解交织器解交织第二分量解码器的输出。 第二减法器具有用于接收解交织器的输出的第五端口和用于接收第一减法器的反相输出的第六端口。 第二减法器的输出连接到第二端口，第二减法器的反相输出端连接到第四端口。 硬判决装置将从第一分量解码器接收的解码符号转换为二进制信息比特。 错误检测器检查从硬判决装置接收的二进制信息比特中的错误，并且如果没有检测到错误则产生无错误信号。 输出缓冲器存储从硬判决装置接收到的二进制信息比特，并响应于无错误信号输出存储的二进制信息比特。

公开(公告)号：US06598202B1

公开(公告)日：2003-07-22

申请号：US09575084

申请日：2000-05-19

申请人： Min-Goo Kim ,  Beong-Jo Kim ,  Soon-Jae Choi ,  Young-Hwan Lee

发明人： Min-Goo Kim ,  Beong-Jo Kim ,  Soon-Jae Choi ,  Young-Hwan Lee

IPC分类号： H03M1303

CPC分类号： H03M13/2771 ,  G11B2220/2562 ,  H03M13/27 ,  H03M13/271 ,  H03M13/2714 ,  H03M13/276 ,  H03M13/2764 ,  H03M13/2957

摘要： A 2-dimensional interleaving method is disclosed. The method comprises dividing a frame of input information bits into a plurality of groups and sequentially storing the divided groups in a memory; permuting the information bits of the groups according to a given rule and shifting an information bit existing at the last position of the last group to a position preceding the last position; and selecting the groups according to a predetermined order, and selecting one of the information bits in the selected group.

摘要翻译： 公开了二维交织方法。 该方法包括将一帧输入信息比特划分成多个组，并且将分组的组顺序地存储在存储器中; 根据给定规则置换组的信息位，并将存在于最后一组的最后位置的信息位移位到最后位置之前的位置; 以及根据预定顺序选择组，并且选择所选组中的一个信息比特。

公开(公告)号：US06591381B1

公开(公告)日：2003-07-08

申请号：US09543792

申请日：2000-04-06

申请人： Beong-Jo Kim ,  Min-Goo Kim

发明人： Beong-Jo Kim ,  Min-Goo Kim

IPC分类号： G06F1100

CPC分类号： H03M13/2771 ,  H03M13/2764

摘要： An encoding device including a first feedback convolutional encoder for encoding n data streams using a primitive polynomial of m'th order, a 2-dimensional interleaver for segmenting the n data streams into k data groups and reading the n data streams from the k data groups and interleaving the n data streams, and a second feedback convolutional encoder for encoding the interleaved data streams from the 2-dimensional interleaver using the primitive polynomial of m'th order. The encoding device comprises a controller for controlling selection of the data groups such that an output of the 2-dimensional interleaver differs from a specific pattern, when k is a positive multiple of 2m−1 and at least one of the data groups has said specific pattern.

摘要翻译： 一种编码装置，包括使用第m阶的原始多项式对n个数据流进行编码的第一反馈卷积编码器，用于将n个数据流分割为k个数据组并从k个数据组读取n个数据流的2维交织器 以及交织n个数据流，以及第二反馈卷积编码器，用于使用第m阶的原始多项式对来自二维交织器的交错数据流进行编码。 编码装置包括控制器，用于控制数据组的选择，使得当k为2m-1的正倍数时，2维交织器的输出与特定模式不同，并且数据组中的至少一个具有所述特定模式 模式。

公开(公告)号：US06170076A

公开(公告)日：2001-01-02

申请号：US09104659

申请日：1998-06-25

申请人： Min-Goo Kim

发明人： Min-Goo Kim

IPC分类号： H03M1303

CPC分类号： H04L1/0069 ,  H03M13/23 ,  H03M13/29 ,  H03M13/31 ,  H04L1/0041 ,  H04L1/0054 ,  H04L1/0059 ,  H04L1/0071 ,  H04L1/08

摘要： A rate-l/n or rate-k/n convolutional encoding method, in a digital communications system having a non-systematic convolutional encoder, includes the steps of: obtaining first to n-th block code words by multiplying first to n convolutional code generating polynomials by an information polynomial upon input of an information word; converting one of the first to n-th block code words to a systematic code word and obtaining a new information word corresponding to the systematic code word; and generating a convolutional code by encoding the new information code in the non-systematic convolutional encoder.

摘要翻译： 在具有非系统卷积编码器的数字通信系统中的速率-1 / n或速率k / n卷积编码方法包括以下步骤：通过将第一至第n个块编码字乘以n个卷积码 在输入信息字时，通过信息多项式生成多项式; 将第一至第n块码字中的一个转换为系统码字，并获得与系统码字对应的新信息字; 以及通过对非系统卷积编码器中的新信息码进行编码来生成卷积码。