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US 10,785,079 B2Granted
System and method for providing time offset and frequency offset estimation for vehicle to everything communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsAmir Dezfooliyan, Vignesh Sethuraman, Hamed Maleki, Linbo Li, Kee-Bong Song
Life of this patent
Estimating the term…
Abstract
A method and apparatus are provided. The method includes receiving a reference signal from a transceiver, estimating a time offset (TO) of the reference signal in the frequency domain based on a spectral phase ramp introduced by the TO, compensating the TO of the reference signal based on the estimated TO in the frequency domain by applying the spectral phase ramp to the received reference signal, and providing a TO compensated signal of the reference signal.
Claims20
A method, comprising:
- receiving a reference signal from a transceiver;
- estimating a time offset (TO) of the reference signal in a frequency domain using a cross correlation differential as an accumulation of subcarriers before cross-correlation, the accumulation of subcarriers being based on a number of allocated subcarriers to a user equipment (UE), an accumulation length, and a correlation distance,
- compensating the TO of the reference signal based on the estimated TO in the frequency domain by applying a spectral phase ramp to the received reference signal;
- and
- providing a TO compensated signal of the reference signal.
2 more elements
An apparatus, comprising:
- a memory;
- a receiver;
- and
- a processor configured to:
- receive a reference signal from a transceiver,
- estimate a time offset (TO) of the reference signal in a frequency domain using a cross correlation differential as an accumulation of subcarriers before cross-correlation, the accumulation of subcarriers being based on a number of allocated subcarriers to a user equipment (UE), an accumulation length, and a correlation distance,
- compensate the TO of the reference signal based on the estimated TO in the frequency domain by applying a spectral phase ramp to the received reference signal, and
- provide a TO compensated signal of the reference signal.
5 more elements
A method, comprising:
- receiving a reference signal from a transceiver;
- estimating a time offset (TO) of the reference signal in a frequency domain using a cross correlation differential as an accumulation of subcarriers before cross-correlation, the accumulation of subcarriers being based on a number of allocated subcarriers to a user equipment (UE), an accumulation length, and a correlation distance,
- compensating the TO of the reference signal based on the estimated TO in the frequency domain by applying a spectral phase ramp to the received reference signal;
- and
- providing a TO compensated signal of the reference signal.
2 more elements
Dependencies are inferred from the claim text.