| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively provide the carrier signal local oscillator of a moving station by adjusting the frequency of the carrier signal local oscillator in accordance with the update quantity of a frequency and setting it to be equivalent to a system which continuously transmits a reference signal that does not execute data modulation. SOLUTION: When the symbol correlation value of the output of a correlation operation part 5 is in a known data section, the complex conjugate value of a known data value is multiplied and the complex conjugate value of the hard judgment value of data in the case of an information data section by the symbol correlation value of the output of the correlation operation part 5. The update quantity of the frequency is operated based on a channel estimation value being the output of a multi-path channel estimation part 2. The frequency of the carrier signal local oscillator is adjusted in accordance with the update quantity of the frequency being the output of a frequency update quantity operation part 3. Consequently, the oscillator becomes equivalent to the system which continuously transmits the reference signal that does not execute data modulation and detection is realized even if a carrier frequency error between the base station and the moving station is large. |
