SIGNAL PROCESSING METHOD AND DEVICE FOR LONG TERM EVOLUTION (LTE) BASE STATION SIDE

摘要

A signal processing method for Long Term Evolution (LTE) base station side is disclosed, and includes the following steps: in the downlink of the signal, filtering the downlink signals to remove the high frequency sub-carrier components at a baseband side, and extracting the filtered signals with an extracting frequency of fsd, wherein fw= fsd<(128/75)*fw, and fw is the frequency spectrum bandwidth of the LTE system; in the uplink of the signal, first performing an interpolation to the uplink signals in order to increase the signal frequency, and then filtering the signals to add high frequency sub-carrier components. The method in the present invention effectively decreases the transmission rate of the baseband radio frequency interface without increasing the complexity of the radio frequency side. The present invention also discloses a corresponding signal processing device for LTE base station side, and the device includes a downlink filter, an extractor, an interpolator, an uplink filter, a frequency domain inverse transformation module and a frequency domain transformation module, all of which are set in the baseband side.