Method and receiver for frequency offset estimation
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsWei Zhou, Yali Pei, Qi Zhang
Life of this patent
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Abstract
The present disclosure provides a method in a receiver for frequency offset estimation. The method includes: for each of two or more pairs of symbols in a set of symbols from a transmitter: calculating a phase difference between a first symbol and a second symbol in the pair; and removing from the calculated phase difference a phase difference component due to a difference between information carried in the first symbol and information carried in the second symbol, to obtain a residual phase difference component. The method further includes: estimating a frequency offset between the receiver and the transmitter as a function of the respective residual phase difference components obtained for the two or more pairs.
Claims12
A method in a receiver for frequency offset estimation, comprising:
- for each of two or more pairs of symbols in a set of symbols from a transmitter:
- calculating a phase difference between a first symbol and a second symbol in the pair;
- and
- removing from the calculated phase difference a phase difference component due to a difference between information carried in the first symbol and information carried in the second symbol, to obtain a residual phase difference component;
- and
- estimating a frequency offset between the receiver and the transmitter as a function of the respective residual phase difference components obtained for the two or more pairs.
A receiver comprising a processor and a memory, the memory comprising instructions executable by the processor whereby the receiver is operative to perform operations comprising:
- for each of two or more pairs of symbols in a set of symbols from a transmitter:
- calculating a phase difference between a first symbol and a second symbol in the pair;
- removing from the calculated phase difference a phase difference component due to a difference between information carried in the first symbol and information carried in the second symbol, to obtain a residual phase difference component;
- and
- estimating a frequency offset between the receiver and the transmitter as a function of the respective residual phase difference components obtained for the two or more pairs.
A computer program product comprising a computer program, the computer program comprising code/computer readable instructions which when executed by a processor causes a receiver to perform operations comprising:
- for each of two or more pairs of symbols in a set of symbols from a transmitter:
- calculating a phase difference between a first symbol and a second symbol in the pair;
- and
- removing from the calculated phase difference a phase difference component due to a difference between information carried in the first symbol and information carried in the second symbol, to obtain a residual phase difference component;
- and
- estimating a frequency offset between the receiver and the transmitter as a function of the respective residual phase difference components obtained for the two or more pairs.
Dependencies are inferred from the claim text.