Patent ID: 8654625

Claim:
A method for transmitting data performed by at least one base station (BS) in a wireless communication system, the method comprising: transmitting respective first signals of a first BS and a second BS, the respective first signals being mapped to a first Orthogonal Frequency Division Multiplexing (OFDM) symbol, and transmitting a second signal having a θ shifted phase of the first signal, by the first BS, the second signal being mapped to a second OFDM symbol, which is contiguous to the first OFDM symbol, wherein a frequency of a subcarrier in which the respective first signals and the second signal are transmitted is identical, wherein the shifted phase θ is determined based on the frequency of the subcarrier in which the respective first signals and the second signal are transmitted, and a length of a cyclic prefix (CP) applied to the first OFDM symbol and the second OFDM symbol, wherein a guard subcarrier, which is a neighboring subcarrier of the subcarrier in which the respective first signals and the second signal are transmitted, is allocated, and wherein the guard subcarrier carries a data symbol in the first OFDM symbol and a phase-modulated data symbol, which has a θ shifted phase of the data symbol, in the second OFDM symbol.