Patent ID: 9319259
Filing Date: 2016-04-19
CPC Classification: H04L

Claim Text:
1. A method for mapping data in a transmitting device, the method comprising: dividing modulated data into groups by a mapper, wherein each group comprises M data, M being a number of the modulated data in a group; mapping one datum of the M data onto an orthogonal frequency division multiplexing (OFDM) subcarrier at the center of 2M−1 adjacent OFDM subcarriers; respectively mapping each datum except for the one datum into two centrosymmetric OFDM subcarriers in the 2M−1 adjacent OFDM subcarriers; performing a functional transformation on each data of the mapped M data in one of two centrosymmetric OFDM subcarriers carrying said each data according to a preset function; and transmitting the M data through the 2M−1 adjacent OFDM subcarriers by the transmitting device, wherein the functional transformation is performed on right or left handed data of the 2M−1 adjacent OFDM subcarriers, and wherein the preset function comprises obtaining at least one of an opposite-number and a reverse-conjugate.