Method for code division multiple access communication with increased capacity through self-noise reduction
    2.
    发明授权
    Method for code division multiple access communication with increased capacity through self-noise reduction 失效
    通过自噪声降低增加容量的码分多址通信方法

    公开(公告)号:US07269126B2

    公开(公告)日:2007-09-11

    申请号:US10663062

    申请日:2003-09-15

    IPC分类号: H04J11/00 H04J3/00 H04B7/216

    摘要: A method for constructing orthogonal codes of length N for use in a network utilizing quasi-synchronous code division multiple access combined with time division duplexing. The method determines the balanced vectors of length N, being all possible cross-correlation vectors resulting from zero cross-correlation of codes of length N. An arbitrary code of length N is utilized, and a bitwise XOR-ing is performed with all the balanced vectors to produce a set of codes with which the arbitrary code is orthogonal. A bitwise XOR-ing of the original balanced vectors is performed and the code is added to a set of orthogonal codes if the result of the bitwise XOR-ing of the original balanced vectors is balanced. The method is repeated until the set of orthogonal codes is complete.

    摘要翻译: 一种构造长度为N的正交码的方法,用于使用与时分双工相结合的准同步码分多址的网络。 该方法确定长度N的平衡向量,即由长度为N的代码的零互相关产生的所有可能的互相关向量。使用长度为N的任意代码,并且按照所有的平衡进行按位异或 向量以产生一组代码,其中任意代码是正交的。 执行原始平衡向量的按位异或,如果原始平衡向量的按位异或的结果是平衡的,则将代码添加到一组正交码。 重复该方法,直到正交码集合完成。

    Method and apparatus for high-speed software reconfigurable code division multiple access communication
    6.
    发明授权
    Method and apparatus for high-speed software reconfigurable code division multiple access communication 失效
    高速软件可重构码分多址通信的方法和装置

    公开(公告)号:US07327779B1

    公开(公告)日:2008-02-05

    申请号:US10048142

    申请日:2000-07-19

    IPC分类号: H04B1/707

    摘要: A communication device for W-CDMA signal transmission and reception includes a W-CDMA transmitter having at least one of a RAM and registers, a W-CDMA receiver having at least one of a RAM and registers, and a signal acquisition circuit. The communication device is software reconfigurable and further includes a digital circuit for phase unbalance precompensation in the W-CDMA transmitter. The digital circuit includes an input register holding a compensation angle and a section performing arithmetic calculations to acquire a change of an I, Q angle by the compensation angle. A method of operating a W-CDMA communication device includes the acts of configuring the device for a specific use, and performing at least one of transmitting, receiving and acquiring waveform signals. The configuring is preferably done by a processor.

    摘要翻译: 用于W-CDMA信号发送和接收的通信设备包括具有RAM和寄存器中的至少一个的W-CDMA发射机,具有RAM和寄存器中的至少一个的W-CDMA接收机和信号采集电路。 通信设备是软件可重新配置的,并且还包括用于W-CDMA发射机中的相位不平衡预补偿的数字电路。 该数字电路包括一个保持补偿角的输入寄存器和一个进行算术运算的区段,以获得I,Q角度的改变量。 一种操作W-CDMA通信设备的方法包括为特定用途配置设备的动作,以及执行发送,接收和采集波形信号中的至少一个。 配置优选地由处理器完成。