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    Spread spectrum signal generating device and method in transmitter of mobile communications system
    2.
    发明授权
    Spread spectrum signal generating device and method in transmitter of mobile communications system 失效
    移动通信系统发射机中的扩频信号发生装置及方法

    公开(公告)号：US06396868B1

    公开(公告)日：2002-05-28

    申请号：US09135990

    申请日：1998-08-18

    申请人： Soon-Young Yoon ,  Jae-Min Ahn ,  Hee-Won Kang ,  Young-Ky Kim ,  Jong-Seon No ,  Hong-Yeop Song ,  Ha-Bong Chung ,  Je-Woo Kim

    发明人： Soon-Young Yoon ,  Jae-Min Ahn ,  Hee-Won Kang ,  Young-Ky Kim ,  Jong-Seon No ,  Hong-Yeop Song ,  Ha-Bong Chung ,  Je-Woo Kim

    IPC分类号： H04B1707

    CPC分类号： H04B1/707 ,  H04B2201/70706 ,  H04J13/004

    摘要： There are provided spread spectrum signal generating devices and methods in a transmitter of a mobile communications system using a plurality of logical channels. In the spread spectrum signal generating devices, a multiplexer time multiplexes a pilot channel signal and a control channel signal which are output at substantially constant power levels. A first orthogonal encoder orthogonally spreads the output of the multiplexer with an orthogonal code. A second orthogonal encoder orthogonally spreads voice channel data of a variable bit rate with an orthogonal code. A third orthogonal encoder orthogonally spreads packet channel data of a variable bit rate with an orthogonal code. An IQ signal mapper adds the outputs of the first and third orthogonal encoders, outputs the added signal as a first channel signal, and outputs the output of the second orthogonal encoder as a second channel signal. A PN spreader spreads the first and second channel signals with PN codes and outputs a final spectrum spread signal, which exhibits a substantially minimized peak-to-average power ratio.

    摘要翻译： 在使用多个逻辑信道的移动通信系统的发射机中提供扩频信号产生装置和方法。 在扩展频谱信号发生装置中，多路复用器以基本上恒定的功率电平输出导频信道信号和控制信道信号。 第一正交编码器使用正交码对多路复用器的输出进行正交扩展。 第二正交编码器用正交码对可变比特率的语音信道数据进行正交扩频。 第三正交编码器使用正交码对可变比特率的分组信道数据进行正交扩展。 IQ信号映射器将第一和第三正交编码器的输出相加，输出相加的信号作为第一信道信号，并将第二正交编码器的输出作为第二信道信号输出。 PN扩展器用PN码扩展第一和第二信道信号，并输出最终的频谱扩展信号，其表现出基本上最小化的峰均功率比。

    Method for encoding/decoding concatenated LDGM code
    6.
    发明申请
    Method for encoding/decoding concatenated LDGM code 审中-公开
    编码/解码级联LDGM码的方法

    公开(公告)号：US20070245211A1

    公开(公告)日：2007-10-18

    申请号：US11399220

    申请日：2006-04-06

    申请人： Joon-Sung Kim ,  Hong-Yeop Song ,  Dong-Ho Kim ,  Cheol-Woo You ,  Ye-Hoon Lee

    发明人： Joon-Sung Kim ,  Hong-Yeop Song ,  Dong-Ho Kim ,  Cheol-Woo You ,  Ye-Hoon Lee

    IPC分类号： H03M13/00

    CPC分类号： H04L1/0045 ,  H03M13/1102 ,  H03M13/29 ,  H03M13/2906 ,  H03M13/6502 ,  H04L1/0057 ,  H04L1/0064

    摘要： A decoding method in a concatenated low-density generator matrix (LDGM) code-based transmission system for detecting a signal using a parity check matrix including a systematic bit part mapped to systematic bits and a parity check part mapped to parity bits. The decoding method includes generating an outer code parity check matrix with a predetermined size using a pseudorandom algorithm; generating an inner code parity check matrix using the outer code parity check matrix; and decoding a received signal using the inner code parity check matrix.

    摘要翻译： 一种用于使用包括映射到系统位的系统位部分的奇偶校验矩阵和映射到奇偶校验位的奇偶校验部分来检测信号的级联低密度生成矩阵（LDGM）码传输系统中的解码方法。 解码方法包括使用伪随机算法生成具有预定大小的外码奇偶校验矩阵; 使用所述外码奇偶校验矩阵生成内码奇偶校验矩阵; 以及使用内码奇偶校验矩阵对接收信号进行解码。