| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio equipment sharing method for connecting baseband signals from a plurality of radio equipment controllers (RECs) of asynchronous baseband clocks to radio equipment (RE) via one cable for wireless transmission/reception. SOLUTION: Clock differential information between the baseband clock of one reference REC and the baseband clock of the other REC than the reference REC is extracted and transmitted to the radio equipment. In the radio equipment, the baseband clock of the other REC than the reference REC is restored from the received clock differential information, RF modulation is performed at an RF frequency synchronized with the clock for wireless output. On the other hand, a signal received via an antenna is RF-demodulated at the RF frequency synchronized with the restored baseband clock. COPYRIGHT: (C)2010,JPO&INPIT
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