Frequency offset acquisition method and apparatus thereof
First Claim
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1. 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.
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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.
33 Citations
19 Claims
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1. A frequency offset acquisition method, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 18)
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9. A frequency offset acquisition apparatus, comprising:
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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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 19)
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17. A frequency offset acquisition apparatus, comprising:
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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.
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Specification