| 摘要 |
PURPOSE: A device for signal demodulation is provided to realize high integration and low power consumption for Application Specific Integrated Circuit(ASIC) in a CDMA communication system. CONSTITUTION: A device for signal demodulation includes a de-spreading unit(200) that arranges and outputs a signal for each channel sampled in a chip unit in time-multiplexed type to have difference of a chip with the PN code for each channel. A accumulation bank(300,400) carries out a pilot filtering process for synchronization of the phase and frequency of the signal for each channel while circulating within the cycle of the relevant PN chip using the output of the de-spreading unit(200). The accumulation bank(300,400) operates accumulation process for the signal for each channel in symbol unit and accumulation process for timing synchronization. |
