| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve message reception characteristics by increasing the number of samples used for calculating the phase rotation amount used for message demodulation, and by improving measurement precision of the phase rotation amount used for message demodulation. <P>SOLUTION: The phase rotation amount of a message outputted from a phase rotation amount calculator 102 and the preamble phase rotation amount outputted from a phase rotation amount calculator 101 are inputted into a phase rotation amount corrector 103. For example, the phase rotation amount corrector 103 corrects the average value of the phase rotation amount of the message outputted from the phase rotation amount calculator 102 and the preamble phase rotation amount outputted from the phase rotation amount calculator 101 as a phase rotation amount used for message demodulation. A demodulator 104 makes phase correction by only the phase rotation amount after correction outputted from the phase rotation amount corrector 103, calculates a channel estimated value, and performs message demodulation. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
