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AssigneeKddi Corporation
InventorsToshinori Suzuki, Noriaki Miyazaki
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The multi-carrier code dividing multiplex transfer system of the present invention includes a direct demodulator that discriminates transmitted signals according to a receiving signal point composed of a combination of receiving values in a spread state of sub-carriers in a range where one modulated symbol is spread, and according to reference signal composing values that can be taken by the combination of the receiving values in the spread state of the sub-carriers. As a result, it is possible to prevent from affects of inter-code interference, and improve receiving characteristics as well.
A multi-carrier code dividing multiplex transfer system for code-spreading modulated symbols in a frequency direction, frequency-multiplexing and transferring them in a plurality of sub-carriers, comprising:
A method for the multi-carrier code dividing multiplex transfer system for code-spreading modulated symbols in a frequency direction, frequency-multiplexing and transferring them, comprising the step of demodulating for discriminating transmitted signals according to a receiving signal point composed of combination of receiving values in a spread state of sub-carriers in a range where one modulated symbol is spread, and according to a reference signal point capable of being taken by the combination of receiving values in the spread state.
A receiving device for receiving transferred signals with modulated symbols code-spread and frequency-multiplexed by a plurality of sub-carriers modulated symbols in a frequency direction, comprising:
Dependencies are inferred from the claim text.