摘要:
The present invention discloses a method, a device, and a system for correcting phase noise, and relates to the field of signal processing, which can perform accurate correction on phase noise. A receiving device in the system for correcting phase noise includes: a transceiver module, configured to receive an output signal returned by a first antenna group and send the output signal to a mixer, where the output signal is generated by a transmitting device by mixing a signal, which is obtained by superposing an original signal and a pilot signal, with a first local oscillator signal; the mixer, configured to mix the output signal with a second local oscillator signal generated by an oscillator, to generate a first output signal; a digital filter, configured to filter the first output signal to extract a first pilot signal that carries phase noise; and a data processor, configured to obtain a phase noise superposition function according to the first pilot signal that carries phase noise and a pilot signal, and further configured to obtain a delayed original signal according to the phase noise superposition function and the first output signal. The present invention is applied to correction of phase noise.
摘要:
Embodiments of the present invention disclose a method and an apparatus for transmitting data. The apparatus for transmitting data includes a high frequency radio unit HFRU that is in a communication connection with a site, and a shift frequency radio unit SFRU that is in a communication connection with the HFRU and with a user equipment, where the HFRU includes a high frequency radio unit - indoor device unit HFRU-IDU and a high frequency radio unit - outdoor device unit HFRU-ODU that connects to the HFRU-IDU, and the SFRU includes a high frequency band transceiver and a wireless cellular band transceiver. By converting to-be-transmitted data into intermediate frequency signals for transmission, the method and apparatus for transmitting data according to the embodiments of the present invention can remarkably reduce a data transmission bandwidth, thereby saving bandwidth resources, reducing a data transmission cost, and reducing a device deployment cost.