SYSTEMS, METHODS, AND APPARATUS FOR FREQUENCY CONTROL

摘要

The invention relates to a receiver comprising a fixed-frequency oscillator that is configured to output a frequency reference (S36). A first and second downconverters (120a, 120b) are configured to output first and second complex digital signals (S20a, S20b) based on first and second radio-frequency signals (S10a, S10b) and the frequency reference (S36). The receiver comprises a frequency control unit (P20) configured to calculate a frequency correction signal (S700) based on the first complex digital signal (S20a). A processing unit (P30) is configured to produce, according to the frequency correction signal (S700), a baseband digital signal (S600) based on the second complex digital signal (S20b), wherein the baseband digital signal (S600) includes a stream of information symbols carried by the second radio-frequency signal.