| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multi-carrier modulation signal reception device having resistance to propagation path distortion and to fluctuation in a propagation path caused by utilizing of multi-paths without transmitting redundant information such as a GI. <P>SOLUTION: An analysis bank 5 is a modified DFT modulation analysis bank operating practically at a rate that is twice a maximum thinning rate, and generates a subchannel signal vector. A linear equalizer 6 linearly equalizes the subchannel signal vector from the analysis bank 5 by using an equalization coefficient from an equalization coefficient calculation part 7. The equalization coefficient calculation part 7 sets a determination domain of a wide range when a modulation error ratio showing signal quality of all subcarriers in a complex carrier symbol after equalization is low, sets a determination domain of a narrow range when the modulation error ratio is high, and optimizes the equalization coefficient only when a signal after the equalization is within the determination domain. Thereby, it is possible to prevent a symbol decision error that is difficult to mitigate in the linear equalizer 6 which is decision-directed equalizer. <P>COPYRIGHT: (C)2013,JPO&INPIT |
