Radio communication equipment using algorithm diversity
First Claim
1. A communication apparatus using algorithm diversity comprising:
- a plurality of demodulators;
recognizing means for recognizing a status of a used spreading factor of a spreading code; and
control means for controlling at least one demodulator leftover from said plurality of demodulators to demodulate data using a spreading code of relatively low spreading factor on the basis of the status of the used spreading factor.
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Accused Products
Abstract
The present invention is characterized by that, at a reception section of a base station in a CDMA system including a reception antenna, a radio section and the number of demodulators corresponding to the number of users where spreading codes of a plurality of spreading factors are available, an algorithm diversity controller and a selector are prepared, information concerning spreading factors of spreading codes utilized by users and others are applied to the algorithm diversity controller, algorithm diversity controller instructs the number of demodulators prepared corresponding to the number of users and the selector, and when signals transmitted by a user utilizing a spreading code of a low spreading factor, i.e. signals with high symbol rate, are received, by demodulating signals with different reception methods or different parameters at demodulators leftover because of the low spreading factor, the demodulated signals of the best quality are selected.
38 Citations
18 Claims
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1. A communication apparatus using algorithm diversity comprising:
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a plurality of demodulators;
recognizing means for recognizing a status of a used spreading factor of a spreading code; and
control means for controlling at least one demodulator leftover from said plurality of demodulators to demodulate data using a spreading code of relatively low spreading factor on the basis of the status of the used spreading factor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
the communication apparatus according to claim 1 and a mobile station communicating with said communication apparatus.
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8. The communication apparatus according to claim 1, wherein all demodulators of said plurality of demodulators are used in demodulation processing.
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9. A communication apparatus using algorithm diversity comprising:
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detecting means for detecting the quality of a reception data; and
control means for controlling a leftover demodulator to demodulate data of relatively low quality on the basis of the quality result. - View Dependent Claims (10)
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11. A communication system using algorithm diversity, wherein said algorithm diversity comprises:
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recognizing status of a used spreading factor of a spreading code; and
controlling at least one demodulator leftover from a plurality of demodulators to demodulate data using a spreading code of relatively low spreading factor on the basis of the status of used spreading factor. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A communication system using algorithm diversity, wherein said algorithm diversity comprising the steps of;
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detecting the quality of a reception data; and
controlling a leftover demodulator to demodulate data of relatively low quality on the basis of the quality result. - View Dependent Claims (18)
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Specification