Phase noise compensation apparatus and method and receiver
AssigneeFujitsu Limited
InventorsXiaofei Su, Zhenning Tao
Life of this patent
Estimating the term…
Abstract
Embodiments of this disclosure provide a phase noise compensation apparatus and method and a receiver, in which modified signals are determined according to estimated values of an imperfection parameter of a transmitter and training sequence signals in transmission signals, and phase noises of the received signals are determined according to the modified signals, hence, an effect of the imperfection parameter of the transmitter on the phase noise is taken into account, and the phase noise may be accurately estimated, thereby performing compensation on the phase noise, and ensuring a transmission efficiency and performance of the system.
Claims8
A phase noise compensation apparatus, comprising:
- a memory;
- a processor coupled to the memory, the processor configured to:
- determine estimated values of an imperfection parameter that affects performance of a transmitter according to received signals,
- determine modified signals according to the determined estimated values of the imperfection parameter of the transmitter and training sequence signals interpolated into transmission signals of the transmitter,
- determine phase noises of the received signals according to the modified signals, and
- perform a phase noise compensation on the received signals according to the phase noises of the received signals,
- wherein the processor is further configured to:
- determine phase noises corresponding to the training sequence signals according to the received signals at occurrences of the training sequence signals and the modified signals corresponding to the training sequence signals, and
- perform interpolation on the phase noises corresponding to the training sequence signals to obtain phase noises of the received signals at all occurrences.
A phase noise compensation method, comprising:
- determining estimated values of an imperfection parameter that affects performance of a transmitter according to received signals;
- determining modified signals according to the determined estimated values of the imperfection parameter of the transmitter and training sequence signals interpolated into transmission signals of the transmitter;
- determining phase noises of the received signals according to the modified signals;
- and
- performing a phase noise compensation on the received signals according to the phase noises of the received signals,
- wherein the determining phase noises of the received signals according to the modified signals comprises:
- determining phase noises corresponding to the training sequence signals according to the received signals at occurrences of the training sequence signals and the modified signals corresponding to the training sequence signals, and
- performing interpolation on the phase noises corresponding to the training sequence signals to obtain phase noises of the received signals at all occurrences.
Dependencies are inferred from the claim text.