| 摘要 |
<p>Different subscriber units (14) transmit different burst signals to a base station (12) on a common frequency to which a base station demodulator (64) is already synchronized. The base station (12) transmits constant values α and θ, where α is multiplied by a base station reference frequency to achieve a base station transmitting frequency, and θ is multiplied by the reference frequency to achieve the base station (12) receiving frequency. A subscriber unit (14) synchronizes to the base station transmitting frequency. As a result of the synchronization process, the subscriber unit (14) determines a value β, which, when multiplied by a subscriber unit reference frequency, achieves the subscriber unit synchronization frequency. The subscriber unit then determines a value η, which is proportional to θ and β and inversely proportional to α. The subscriber unit reference frequency is multiplied by η to achieve the frequency at which the subscriber unit (14) transmits.</p> |
