Frequency calibrating method and device under TD-SCDMA mode
A TD-SCDMA and frequency calibration technology, applied in the field of frequency calibration methods and devices, can solve the problems of reducing spectrum utilization, deteriorating system performance, increasing system overhead, etc., to improve spectrum utilization and frequency calibration accuracy, and improve frequency calibration Accuracy, the effect of improving spectrum utilization
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[0057] The idea of the present invention will be set forth below in conjunction with the accompanying drawings, with reference to figure 2 , a frequency calibration method under the TD-SCDMA system, comprising steps:
[0058] S1, the first frequency offset calibration;
[0059] Use the downlink synchronization code in the sending and receiving data to perform the first frequency offset calibration on the receiver, and narrow the range of frequency offset calibration.
[0060] S2. The second frequency offset calibration.
[0061] Using the downlink synchronization code in the sending and receiving data and the intermediate code in the sending and receiving data to perform a second frequency offset calibration on the receiver, the frequency offset of the receiver is calibrated within the error tolerance range of the system.
[0062] The present invention calibrates frequency twice, the first time using the downlink synchronization code in the sending and receiving data to c...
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