METHOD AND APPARATUS FOR ESTIMATING PROPAGATION DELAY TIME
First Claim
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1. A method for estimating a propagation delay time using signal transmission/reception, comprising:
- receiving an initial reception signal or a signal of which frequency offset is compensated according to a predetermined condition;
detecting a peak time of a received signal;
estimating frequency offset of the signal from which the peak time is detected;
compensating the frequency offset of the signal from which the peak time is detected; and
compensating the peak time of the received signal by redetecting the peak time of the received signal of which the frequency offset is compensated.
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Abstract
An apparatus for estimating a propagation delay time using signal transmission/reception receives an initial reception signal or a signal of which frequency offset is compensated to correspond to a predetermined condition and detects a peak time of a received signal. Next, the propagation delay time estimating apparatus estimates and compensates frequency offset of the signal of which the peak time is detected and redetects the peak time of the received signal of which the frequency offset is compensated to compensate the peak time of the received signal.
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Citations
13 Claims
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1. A method for estimating a propagation delay time using signal transmission/reception, comprising:
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receiving an initial reception signal or a signal of which frequency offset is compensated according to a predetermined condition; detecting a peak time of a received signal; estimating frequency offset of the signal from which the peak time is detected; compensating the frequency offset of the signal from which the peak time is detected; and compensating the peak time of the received signal by redetecting the peak time of the received signal of which the frequency offset is compensated. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for estimating a propagation delay time by using signal transmission/reception, comprising:
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a coarse/fine switch for outputting an initial reception signal or a signal of which frequency offset is compensated to correspond to a predetermined condition; a peak detector for detecting an initial peak time of the initial reception signal or a peak time of the signal of which the frequency offset is compensated; an estimator for estimating frequency offset of the signal from which the peak time is detected; and a compensator for compensating the frequency offset of the signal of which is the peak time is detected. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification