| 摘要 |
PURPOSE: A bridging system of digital wireless signal is provided to enable the remote antenna connection and the bridging system strong to the distortion and noise. CONSTITUTION: A bridging system of digital wireless signal comprises the parts of: transmission part connected to one of the antennas receiving the digital mobile communication signal, converting the signal into the mid-frequency range, converting the transformed signal into digital data, performing the analysis poly-phase filtering and the corrected FOURIER transform to divide the data into the sub-bands, outputting the modulated signal from modulating the digital data from the selected sub-band to the intended channel; reception part converting the modulated signal from the intended channel into electric signal, performing the reverse FOURIER transform and composite poly-phase filtering for the electric signal, converting the filtered data into analog signal, converting the range into the mobile communication frequency range, supplying the analog signal to the above base station or remote antenna.
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