Method for generating quasi-orthogonal code and spreader using the same in mobile communication system
    1.
    发明授权
    Method for generating quasi-orthogonal code and spreader using the same in mobile communication system 有权
    用于在移动通信系统中生成准正交码和扩展器的方法

    公开(公告)号:US06377539B1

    公开(公告)日:2002-04-23

    申请号:US09149924

    申请日:1998-09-09

    IPC分类号: H04J1100

    摘要: A device for generating quasi-orthogonal codes which allow the minimum interference with orthogonal codes in a mobile communication system using the orthogonal codes. The device includes a first spreader for spreading at least one input signal with quasi-orthogonal codes, a second spreader for spreading another input signal with Walsh codes, and a PN (Pseudo-Noise) spreader for complex-spreading output signals of the first and second spreaders with PN sequences. The quasi-orthogonal codes are characterized in that a partial correlation value with the Walsh codes does not exceed a lowest partial correlation limit value.

    摘要翻译: 一种用于产生准正交码的装置,其允许使用正交码的移动通信系统中的正交码的最小干扰。 该装置包括用于扩展具有准正交码的至少一个输入信号的第一扩展器,用于使用沃尔什码扩展另一输入信号的第二扩展器和用于第一和第二扩频器的复扩展输出信号的PN(伪噪声)扩展器, 具有PN序列的第二扩散器。 准正交码的特征在于,与沃尔什码的部分相关值不超过最低部分相关极限值。

    Spread spectrum signal generating device and method in transmitter of mobile communications system
    4.
    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

    IPC分类号: H04B1707

    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。

    Device and method for generating and distributing coded symbols in a CDMA communication system
    6.
    发明授权
    Device and method for generating and distributing coded symbols in a CDMA communication system 有权
    用于在CDMA通信系统中生成和分配编码符号的装置和方法

    公开(公告)号:US06400703B1

    公开(公告)日:2002-06-04

    申请号:US09324423

    申请日:1999-06-01

    IPC分类号: H04B7208

    摘要: A device and method for generating and distributing convolutional codes such that performance degradation due to a bad link environment may be minimized during channel decoding in a CDMA communication system. The convolutional encoder encodes transmission data at a coding rate of R=1/6 and can be used for a channel encoder. Such a channel encoder can be used in both a DS-CDMA communication system and a multicarrier CDMA communication system. When the channel encoder is used in the multicarrier CDMA communication system, the symbols outputted from multiple constituent encoders for the channel encoder are distributed to multiple carrier channels according to a predetermined rule, and the constituent encoders for the channel encoder can minimize the performance degradation of the overall channel encoder even though an output of a particular constituent encoder is completely off at the transmission channel.

    摘要翻译: 用于生成和分配卷积码的装置和方法,使得在CDMA通信系统中的信道解码期间,由于不良链路环境导致的性能下降可能被最小化。 卷积编码器以R = 1/6的编码速率对传输数据进行编码,并可用于信道编码器。 这样的信道编码器可以在DS-CDMA通信系统和多载波CDMA通信系统中使用。 当在多载波CDMA通信系统中使用信道编码器时,从用于信道编码器的多个组成编码器输出的符号根据预定规则分配到多个载波信道,并且信道编码器的组成编码器可以最小化性能下降 即使特定构成编码器的输出在传输信道处完全关闭,整个信道编码器也是如此。

    PRODUCT CODE DECODING METHOD AND DEVICE
    9.
    发明申请
    PRODUCT CODE DECODING METHOD AND DEVICE 有权
    产品代码解码方法和设备

    公开(公告)号:US20120060071A1

    公开(公告)日:2012-03-08

    申请号:US13005294

    申请日:2011-01-12

    IPC分类号: H03M13/00 G06F11/10

    摘要: A method for a decoding device to decode a codeword matrix of a product code includes: generating a first extended parity check matrix for a vertical code; decoding a horizontal codeword of a plurality of rows in the codeword matrix to thus perform a first decoding process; generating a second extended parity check matrix by removing a column corresponding to a row of the first decoding-succeeded horizontal codeword from the first extended parity check matrix; and decoding the first decoding-failed horizontal codeword by using the second extended parity check matrix to thus perform a second decoding process. Therefore, the simple and reliable product code decoding method is provided.

    摘要翻译: 解码装置对产品码的码字矩阵进行解码的方法包括:产生用于垂直码的第一扩展奇偶校验矩阵; 解码码字矩阵中的多行的水平码字,从而执行第一解码处理; 通过从所述第一扩展奇偶校验矩阵中移除与所述第一解码后继水平码字的行相对应的列来产生第二扩展奇偶校验矩阵; 以及通过使用第二扩展奇偶校验矩阵来解码第一解码失败的水平码字,从而执行第二解码处理。 因此,提供了简单可靠的产品代码解码方法。

    Source antenna switching scheme for non-orthogonal protocol
    10.
    发明授权
    Source antenna switching scheme for non-orthogonal protocol 有权
    用于非正交协议的源天线切换方案

    公开(公告)号:US08699400B2

    公开(公告)日:2014-04-15

    申请号:US12571771

    申请日:2009-10-01

    IPC分类号: H04B7/14

    摘要: The present invention relates to a source antenna switching scheme for a non-orthogonal protocol; and more particularly, to a source antenna switching scheme for a non-orthogonal protocol, which transmits a signal of a source node to a destination node through a relay node. The present invention provides a source antenna switching scheme for a non-orthogonal decode-and-forward protocol that can acquire a greater diversity than the conventional NDF protocol. In other words, the present invention provides a source antenna switching scheme for a non-orthogonal decode-and-forward protocol that can increase a diversity order by adding a reasonable priced antenna instead of expensive hardware such as an RF chain when there are a plurality of antenna in the RF chain.

    摘要翻译: 本发明涉及非正交协议的源天线切换方案; 更具体地,涉及用于通过中继节点将源节点的信号发送到目的地节点的非正交协议的源天线切换方案。 本发明提供了一种用于非正交解码和转发协议的源天线切换方案,其可以获得比常规NDF协议更大的分集。 换句话说,本发明提供了一种用于非正交解码和转发协议的源天线切换方案,其可以通过添加合理的价格天线而不是诸如RF链的昂贵硬件来增加分集顺序,当存在多个 的RF链中的天线。