| 摘要 |
PROBLEM TO BE SOLVED: To provide a system for sufficiently following the changes of the transmission environment even in radio communication under environment with rapid changes while realizing an adaptive equalization system since there is a problem that convergence time of an equalization error becomes large, equalization of a data signal is performed before the equalization error is completely converged and an erroneously judged equalization result is outputted since training of a training signal is insufficient though equalization is performed to the training signal at the head of transmission data in the conventional equalization system. SOLUTION: The adaptive equalization system enhances transmission quality since the equalization error is more surely made small and judgment of the equalization result is surely performed by a system for repeatedly performing the equalization for the training. In addition, information signal transmission quantity per frame is increased since training signal length in one frame is reduced and information signal length in one frame is increased by repeatedly performing the training. COPYRIGHT: (C)2005,JPO&NCIPI
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