Patent ID: 7688903

Claim:
A multicarrier transmission apparatus for transmitting data using a bit distribution ratio, comprising: a bit distribution ratio calculating unit comprising an SNR calculation unit and a minimum bit distribution ratio calculating unit; the SNR calculation unit for calculating a Signal to Noise Ratio (SNR) of periodic noise on a communication line, the minimum bit distribution ratio calculating unit for calculating the bit distribution ratio to be assigned to each carrier for data transmission according to a calculation result of the SNR calculated by the SNR calculation unit, and for comparing a plurality of bit distribution ratios calculated by the bit distribution ratio calculating unit with each other to thereby detect a minimum bit value for each carrier, and calculating, on the basis of the minimum bit value of each carrier detected by the minimum bit distribution ratio calculating unit, a minimum bit distribution ratio including minimum bit values of all carriers; and a transmitting unit for transmitting said data using the minimum bit distribution ratio calculated by the minimum bit distribution ratio calculating unit.