Data transferring device, data transferring method and data receiving method

摘要

Disclosed is a data transmitting device which includes an input symbol mapping unit converting serial data symbols to parallel data symbols and generating null signals; and a conversion unit converting the parallel data symbols and the null signals to a plurality of subcarriers and a plurality of null subcarriers using sub frequency bands overlapped with one another, wherein the plurality of subcarriers is transformed using sub frequency bands separated from one another.

主权项

1. A data transmitting device comprising:
an input symbol mapping unit converting serial data symbols to parallel data symbols and generating null signals; a conversion unit converting the parallel data symbols and the null signals to a plurality of subcarriers and a plurality of null subcarriers respectively using sub frequency bands overlapped with one another; a detection block detecting a frequency band occupied at an exterior; and a control unit sending number information of the parallel data symbols to the input symbol mapping unit according to a number of the sub frequency bands corresponding to the detected frequency band, wherein the control unit generates the number information of the parallel data symbols by subtracting a number of frequency channels corresponding to the detected frequency band from a number of frequency channels corresponding to frequency band for transmission, wherein the input symbol mapping unit decides a number of the parallel data symbols according to the number information received from the control unit, and converts the serial data symbols to the parallel data symbols according to the number information, wherein the conversion unit includes input points, respectively, corresponding to the overlapped sub frequency bands, and converts signals received via the input points using the overlapped sub frequency bands, respectively, wherein the input symbol mapping unit transfers a null signal to an input point corresponding to the detected frequency band, wherein the parallel data symbols are converted using sub frequency bands separated from one another, and wherein the parallel data symbols and the null signals are converted such that main lobes of the plurality of subcarriers are not overlapped.