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US 2006/0079184 A1Published application
Channel estimator, demodulator, speed estimator and method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsJoo-Hyun Do, Hyung-Jin Choi, Sung-Jun Kim, Kil-Hyen Ryu
Life of this patent
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Abstract
A channel estimator, demodulator, speed estimator and method thereof. The speed estimator may generate a speed indicator indicating a speed of a mobile device. The channel estimator may perform channel estimation based on the estimated speed indicated by the speed indicator. The demodulator may perform channel compensation based on the channel estimation performed by the channel estimator.
Claims56
A channel estimating method, comprising:
- obtaining a power spectrum of a received signal by performing a frequency transform on a pilot channel symbol;
- estimating a speed of a mobile device associated with the received signal based at least in part on the power spectrum;
- and
- performing a channel estimation using the estimated speed of the mobile device.
1 more element
A channel estimator, comprising:
- a speed estimator performing a frequency transform on a pilot channel symbol to obtain a power spectrum of a received signal and estimating a speed of a mobile device based on the power spectrum;
- and
- a plurality of channel estimation sections performing a channel estimation based on the estimated speed.
A demodulator, comprising:
- a searcher configured to search for a received signal within a given frequency bandwidth range and configured to generate a plurality of path signals based on a transmission delay to transfer the generated plurality of the path signals to a plurality of fingers;
- a channel estimator configured to obtain a power spectrum of a pilot channel symbol corresponding to the plurality of the path signals, configured to estimate a speed of a mobile device using the obtained power spectrum, and configured to perform channel estimation using the estimated speed of the mobile device;
- a channel compensator configured to perform channel compensation on the plurality of the path signals using a result of the channel estimation performed by the channel estimator;
- and
- a combiner configured to perform a maximum ratio combining process on the channel-compensated data channel symbols.
2 more elements
A speed estimator, comprising:
- a plurality of power spectrum calculation sections configured to perform a frequency transform on a pilot channel symbol of each of a plurality of fingers to obtain a power spectrum of a received signal;
- and
- a speed indicator generation section configured to generate a speed indicator representing information associated with a speed of a mobile device based on the obtained power spectrum.
Dependencies are inferred from the claim text.