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US 9,001,940 B2Granted
Frequency offset acquisition method and apparatus thereof
AssigneeRealtek Semiconductor Corp.
InventorWei-Hung He
Life of this patent
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Abstract
A frequency offset acquisition method includes: receiving a specific sequence signal transmitted through a channel; shifting a frequency of the specific sequence signal at a plurality of different frequencies in frequency domain to thereby generate a plurality of shifted sequence signals respectively; and determining an estimated frequency offset value between a transmitter and a receiver according to the shifted sequence signals.
Claims19
A frequency offset acquisition method, comprising:
- receiving a specific sequence signal transmitted through a channel, and storing the specific sequence signal in a storage unit;
- performing a plurality of frequency shifting operations upon the same and entire specific sequence signal by respectively shifting the same and entire specific sequence signal by a plurality of different frequencies in frequency domain, thereby generating a plurality of shifted sequence signals, respectively;
- and
- determining an estimated frequency offset value between a transmitter and a receiver according to the plurality of shifted sequence signals.
1 more element
A frequency offset acquisition apparatus, comprising:
- a receiving unit, configured to receive a specific sequence signal transmitted through a channel,
- a processing unit, coupled to the receiving unit, and configured to perform a plurality of frequency shifting operations upon the same and entire specific sequence signal by respectively shifting the same and entire specific sequence signal by a plurality of different frequencies in frequency domain, thereby generating a plurality of shifted sequence signals, respectively;
- and
- a determining unit, coupled to the processing unit, and configured to determine an estimated frequency offset value between a transmitter and a receiver according to the plurality of shifted sequence signals.
1 more element
A frequency offset acquisition apparatus, comprising:
- a receiving unit, configured to receive a specific sequence signal transmitted through a channel,
- a processing unit, coupled to the receiving unit, and configured to shift a frequency of the specific sequence signal at a plurality of different frequencies in frequency domain to thereby generate a plurality of shifted sequence signals, respectively;
- a determining unit, coupled to the processing unit, and configured to determine an estimated frequency offset value between a transmitter and a receiver according to the plurality of shifted sequence signals;
- a calibration unit, coupled to the determining unit, and configured to utilize the estimated frequency offset value to perform a frequency offset calibration upon the specific sequence signal to generate a calibrated sequence signal;
- a choosing unit, coupled to the calibration unit, and configured to choose a plurality of partial sequence signals among the calibrated sequence signals;
- and
- an updating unit, coupled to the choosing unit, and configured to update the frequency offset value according to the plurality of partial sequence signals and the original sequence signal.
4 more elements
Dependencies are inferred from the claim text.