Patent ID: 7069048

Claim:
A signal-receiving system of a base station system of a mobile communication system, the signal-receiving system comprising: at least one signal-receiving section; a down-converter including at least one down-converter board and at least one redundant down-converter board, wherein one board is selected from among the at least one down-converter board and the at least one redundant down-converter board for downwardly converting a frequency of a signal inputted through the signal-receiving section, the at least one down-converter board corresponding to the signal-receiving section; and a switching section connected between the signal-receiving section and the down-converter, the switching section being switched to connect the at least one down-converter board with the signal-receiving section when the at least one down-converter board is normal, and as to connect the at least one redundant down-converter board with the signal-receiving section when the at least one down-converter board is abnormal, wherein the at least one down-converter board and the at least one redundant down-converter board each comprise: a divider dividing the signal inputted through the signal-receiving section into a plurality of signals, a number of which corresponds to that of predetermined multi-frequency assignments (FAs); and a plurality of converters corresponding to the predetermined FAs for downwardly converting outputs of the divider for the corresponding FAs.