Radio receiving device and radio receiving method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKenichi Miyoshi, Mitsuru Uesugi
Life of this patent
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Abstract
A likelihood calculating section 205 calculates a likelihood of a data portion signal and outputs a weighting coefficient according to the likelihood to a multiplier 206. The multiplier 206 multiplies a data channel estimation value output from a data channel estimating section 204 by the weighting coefficient output from the likelihood calculating section 205, whereby weighting the data channel estimation value according to likelihood of the data portion signal. A combining section 207 combines a PL channel estimation value with the data channel estimation value weighted according to the likelihood of data portion signal to obtain a final channel estimation value.
Claims11
A radio receiving apparatus comprising:
- a first estimator that obtains a first channel estimation value of a known signal portion of a received signal;
- a second estimator that obtains a second channel estimation value of a data portion of the received signal;
- a weighting system that weights the second channel estimation value according to reliability of a temporary decision value of the data portion;
- and
- a compensator that compensates for channel variations of the data portion using a third channel estimation value obtained by combining the weighted second channel estimation value and the first channel estimation value.
A radio receiving apparatus comprising:
- a first estimator that obtains a first channel estimation value of a known signal portion of a received signal;
- a second estimator that obtains a second channel estimation value of a data portion of the received signal;
- a deciding system that decides whether reliability of a temporary decision value of the data portion is high;
- a selector that selects only the second channel estimation value corresponding to the temporary decision value with higher reliability;
- and
- a compensator that compensates for channel variations of the data portion using a third channel estimation value obtained by combining the selected second channel estimation value and the first channel estimation value.
A communication terminal apparatus having a radio receiving apparatus, said radio receiving apparatus comprising:
- a first estimator that obtains a first channel estimation value of a known signal portion of a received signal;
- a second estimator that obtains a second channel estimation value of a data portion of the received signal;
- a weighting system that weights the second channel estimation value according to reliability of a temporary decision value of the data portion;
- and
- a compensator that compensates for channel variations of the data portion using a third channel estimation value obtained by combining the weighted second channel estimation value and the first channel estimation value.
A communication terminal apparatus having a radio receiving apparatus, said radio receiving apparatus comprising:
- a first estimator that obtains a first channel estimation value of a known signal portion of a received signal;
- a second estimator that obtains a second channel estimation value of a data portion of the received signal;
- a deciding system that decides whether reliability of a temporary decision value of the data portion is high;
- a selector that selects only the second channel estimation value corresponding to the temporary decision value with higher reliability;
- and
- a compensator that compensates for channel variations of the data portion using a third channel estimation value obtained by combining the selected second channel estimation value and the first channel estimation value.
A base station apparatus having a radio receiving apparatus, said radio receiving apparatus comprising:
- a first estimator that obtains a first channel estimation value of a known signal portion of a received signal;
- a second estimator that obtains a second channel estimation value of a data portion of the received signal;
- a weighting system that weights the second channel estimation value according to reliability of a temporary decision value of the data portion;
- and
- a compensator that compensates for channel variations of the data portion using a third channel estimation value obtained by combining the weighted second channel estimation value and the first channel estimation value.
A base station apparatus having a radio receiving apparatus, said radio receiving apparatus comprising:
- a first estimator that obtains a first channel estimation value of a known signal portion of a received signal;
- a second estimator that obtains a second channel estimation value of a data portion of the received signal;
- a deciding system that decides whether reliability of a temporary decision value of the data portion is high;
- a selector that selects only the second channel estimation value corresponding to the temporary decision value with higher reliability;
- and
- a compensator that compensates for channel variations of the data portion using a third channel estimation value obtained by combining the selected second channel estimation value and the first channel estimation value.
A radio receiving method comprising:
- a first estimating step of obtaining a first channel estimation value of a known signal portion of a received signal;
- a second estimating step of obtaining a second channel estimation value of a data portion of the received signal;
- a weighting step of weighting the second channel estimation value according to reliability of a temporary decision value of the data portion;
- and
- a compensating step of compensating for channel variations of the data portion using a third channel estimation value obtained by combining the weighted second channel estimation value and the first channel estimation value.
A radio receiving method comprising:
- a first estimating step of obtaining a first channel estimation value of a known signal portion of a received signal;
- a second estimating step of obtaining a second channel estimation value of a data portion of the received signal;
- a deciding step of deciding whether reliability of a temporary decision value of the data portion is high;
- a selecting step of selecting only the second channel estimation value corresponding to the temporary decision value with higher reliability;
- and
- a compensating step of compensating for channel variations of the data portion using a third channel estimation value obtained by combining the selected second channel estimation value and the first channel estimation value.
Dependencies are inferred from the claim text.