| 摘要 |
<p>A method and an apparatus for selecting a sampling clock signal in a wireless communication system are provided to synchronize digital data signals outputted from respectively different channel cards and main stable communication by continuously monitoring sampling clock signals provided from more than two channel cards and using a normal high-priority sampling clock signal as a reference sampling clock signal. An apparatus for selecting a sampling clock signal in a wireless communication system comprises a clock judgment unit(30) and a clock selection part(40). The clock judgment unit(30) receives sampling clock signals from more than two channel cards, judges whether the received sampling clock signals respectively are normal, and outputs a detection signal for each of the sampling clock signals. The clock selection part(40), if detection signals are inputted from the clock judgment unit(30), confirms the normality or abnormality of the sampling clock signals according to their priority, selects a high-priority sampling clock signal among the normal sampling clock signals, and outputs it as a reference sampling clock signal. In case a sampling clock signal, of which the priority is higher than the selected and outputted sampling clock signal, is inputted normally, the clock selection part(40) outputs it as a reference sampling clock signal.</p> |
