| 摘要 |
PURPOSE: A mobile communication system with an excellent tracking accuracy and a wide synchronization width is provided to perform an accurate tracking by using a delay locked loop circuit for performing a tracking synchronization of a reception signal. CONSTITUTION: A mobile communication system with an excellent tracking accuracy and a wide synchronization width comprises a delay locked loop circuit to perform a tracking synchronization of a reception signal. The reception signal is a kind of spread spectrum signal. The delay locked loop circuit comprises a generation unit to generate a prior signal, a first posterior signal, and a second posterior signal of different phases. A multiplication unit((a,9b,9c) multiplies the reception signal by each the prior and the first and the second posterior signal to generate a first multiplying signal to a third multiplying signal. The generation unit generates a tracking error signal. A supply unit supplies a clock signal to the generation unit according to the tracking error signal. |
