FLEXIBLE CORRELATION AND QUEUEING IN CDMA COMMUNICATION SYSTEMS

    公开(公告)号:AU2003223290A1

    公开(公告)日:2003-11-10

    申请号:AU2003223290

    申请日:2003-03-17

    Applicant: MOTOROLA INC

    Abstract: A programmable correlator for a communication system includes an input queue coupled with an analog-to-digital converter (ADC). The input queue includes a random access memory (RAM) wherein sampled data streams from the ADC are written into the RAM. The input queue has two banks of memory of width 2M. A flexible complex correlator is operable on M samples. The correlator is coupled to read M complex samples out of 2M samples from the input queue. A pseudo-noise (PN) crossbar unit operates to rotate a generated PN code to match a rotation of the input queue data in the complex correlator.

    3.
    发明专利
    未知

    公开(公告)号:BR0204679A

    公开(公告)日:2003-04-08

    申请号:BR0204679

    申请日:2002-03-05

    Applicant: MOTOROLA INC

    Abstract: A method for performing timing synchronization between digital input data and a system clock in a communication device includes providing a system clock rate that is higher than a data clock rate and sampling the input data at intervals in the system clock periods within the data clock period. The method includes adjusting the timing between the digital input data and the system clock by either shortening the number of system clock periods and sampling intervals, or lengthening the number of system clock periods and sampling the input data at normal intervals and providing data insertion to fill one of the extra system clock periods, such that more data samples are provided in the data clock period.

    TIMING SYNCHRONIZATION IN A COMMUNICATION DEVICE
    4.
    发明公开
    TIMING SYNCHRONIZATION IN A COMMUNICATION DEVICE 审中-公开
    定时同步在通信设备

    公开(公告)号:EP1374471A4

    公开(公告)日:2006-05-24

    申请号:EP02719118

    申请日:2002-03-05

    Applicant: MOTOROLA INC

    Abstract: A method for performing timing synchronization (fig. 3) between digital input data and a system clock in a communication device includes providing a system clock rate that is higher than a data clock rate (34) and sampling the input data at intervals in the system clock periods within the data clock period. The method includes adjusting (36 and 38) the timing between the digital input data and the system clock by either shortening the number of system clock periods and sampling intervals, or lengthening the number of system clock periods and sampling the input data at normal intervals and providing data insertion to fill one of the extra system clock periods, such that more data samples are provided in the data clock period.

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