Channel spreading device and method for CDMA communication system
    55.
    发明授权
    Channel spreading device and method for CDMA communication system 有权
    CDMA通信系统的信道扩散装置及方法

    公开(公告)号:US06807221B1

    公开(公告)日:2004-10-19

    申请号:US09442379

    申请日:1999-11-17

    IPC分类号: H04B1707

    摘要: A channel spreading device for a base station in a CDMA communication system is described. The device comprises a spreading code generator for generating a real-component spreading code and an imaginary-component spreading code corresponding to a designated channel spreading code index; a circuit receiving a mode control signal, for disabling generation of the imaginary-component spreading code when the received mode control signal indicates a BPSK (Binary Phase Shift Keying) modulation mode; and a complex multiplier receiving a channel signal, for complex multiplying the received channel signal by the spreading codes to spread the channel signal.

    摘要翻译: 描述CDMA通信系统中用于基站的信道扩展装置。 该装置包括扩展码发生器,用于产生对应于指定信道扩展码索引的实分量扩展码和虚分量扩展码; 接收模式控制信号的电路,用于当接收模式控制信号指示BPSK(二进制相移键控)调制模式时禁止产生虚分量扩展码; 以及接收信道信号的复数乘法器,用于将接收的信道信号复用乘以扩展码以扩展信道信号。

    Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system
    56.
    发明授权
    Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system 有权
    用于在移动通信系统中产生准正交码和扩展信道信号的装置和方法

    公开(公告)号:US06731674B1

    公开(公告)日:2004-05-04

    申请号:US09405333

    申请日:1999-09-24

    IPC分类号: H04B1500

    CPC分类号: H04J13/10 H04J13/0048

    摘要: A device and method for generating a binary quasi-orthogonal code in a CDMA communication system. The method comprises generating an m-sequence, and specific left and right sequences having a good full correlation property with the m-sequence; column permuting the specific left and right sequences in a column permutation method used when converting the m-sequence to a Walsh orthogonal code, and connecting the left sequences to the right sequences to generate mask candidates; operating the mask candidates and Walsh orthogonal codes having the same length as the mask candidates to generate quasi-orthogonal code candidate families; and selecting a quasi-orthogonal code out of the generated quasi-orthogonal code candidate families, the selected quasi-orthogonal code satisfying a partial correlation property with the Walsh orthogonal codes, and selecting a mask related to generation of the selected quasi-orthogonal code.

    摘要翻译: 一种用于在CDMA通信系统中产生二进制准正交码的装置和方法。 该方法包括生成m序列,以及具有与m序列具有良好全相关特性的特定左和右序列; 列将在将m序列转换为沃尔什正交码时使用的列置换方法中的特定左右序列进行排列,并将左序列连接到右序列以生成掩码候选; 操作具有与掩码候选相同长度的掩码候选和沃尔什正交码,以产生准正交代码候选族; 以及从所生成的准正交码候选族中选择准正交码,所选择的准正交码与沃尔什正交码满足部分相关性,并选择与选择的准正交码的生成相关的掩模。

    Method for generating complex quasi-orthogonal code and apparatus and method for spreading channel data using the quasi-orthogonal code in CDMA communication system
    57.
    发明授权
    Method for generating complex quasi-orthogonal code and apparatus and method for spreading channel data using the quasi-orthogonal code in CDMA communication system 有权
    用于生成复合准正交码的方法,以及用于在CDMA通信系统中使用准正交码扩展信道数据的装置和方法

    公开(公告)号:US06671251B1

    公开(公告)日:2003-12-30

    申请号:US09480963

    申请日:2000-01-11

    IPC分类号: H04J1100

    摘要: A method for generating a complex quasi-orthogonal code for channel spreading in a CDMA communication system is disclosed. The method comprises generating an M-sequence having a length N and a specific sequence having a good full correlation property with the M-sequence; generating a predetermined number of other specific sequences by circularly shifting said specific sequence; generating a predetermined number of other M-sequences by circularly shifting said M-sequence, and column permutating the circularly shifted specific sequences in a same method as a column permutation method for converting the generated M-sequences to Walsh orthogonal codes to generate candidate masks; generating quasi-orthogonal code representatives by operating the candidate masks and the Walsh orthogonal codes having the same length as the mask candidates; and selecting quasi-orthogonal code candidates satisfying a partial correlation between the Walsh orthogonal codes out of the generated quasi-orthogonal code representatives and a partial correlation between different quasi-orthogonal codes, and selecting masks pertinent to generating the selected quasi-orthogonal codes.

    摘要翻译: 公开了一种用于在CDMA通信系统中生成用于信道扩展的复合准正交码的方法。 该方法包括产生具有长度N的M序列和与M序列具有良好全相关特性的特定序列; 通过循环移位所述特定序列产生预定数量的其他特定序列; 通过循环移位所述M序列来产生预定数量的其他M序列,并且以与用于将所生成的M序列转换为沃尔什正交码的列置换方法相同的方法对列进行排列,以生成候选掩模; 通过操作候选掩码和与掩码候选具有相同长度的沃尔什正交码来产生准正交码表示; 以及选择满足所生成的准正交码表示中的沃尔什正交码之间的部分相关性的准正交码候选和不同准正交码之间的部分相关性,以及选择与生成选择的准正交码相关的掩码。

    Method and apparatus for providing packet data service in a communication system
    58.
    发明授权
    Method and apparatus for providing packet data service in a communication system 失效
    用于在通信系统中提供分组数据服务的方法和装置

    公开(公告)号:US06510145B1

    公开(公告)日:2003-01-21

    申请号:US09114993

    申请日:1998-07-14

    IPC分类号: H04Q700

    CPC分类号: H04W76/20

    摘要: Method and apparatus for providing a packet data service between a terminal and a base station in a mobile communication system includes packet data being transmitted from the terminal (base station) on a reverse (forward) packet traffic channel to the base station (terminal) during a data transmission period; the occupation of the reverse (forward) packet traffic channel is released during a data transmission suspension period; and the base station controls the reverse (forward) packet traffic channel over a packet control channel.

    摘要翻译: 在移动通信系统中,在终端和基站之间提供分组数据业务的方法和装置包括在反向(前向)分组业务信道上从终端(基站)向基站(终端)发送的分组数据 数据传输周期; 在数据传输暂停期间释放反向(前向)分组业务信道的占用; 并且基站通过分组控制信道来控制反向(前向)分组业务信道。