| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve characteristics of frequency detection by performing correct transmission line estimation even in an interference or noisy state. SOLUTION: A transmission line amplitude and phase estimation part 105 finds as a transmission estimated value 301 an amplitude and phase estimation error due to variation of a transmission line through a transmission line amplitude and phase estimation part 105 by using a pilot symbol whose transmission pattern is already known among signals spread reversely by a reverse spreading filter 103. A reliability measurement part 106 finds the reliability of the transmission line estimation value 301. An interpolation part 107 generates a phase compensation vector by changing interpolating methods according to the reliability. Then a synchronous detection part 108 compensates the amplitude and phase error of the information symbol with the receive phase vector and performs synchronous detection.</p> |
