Patent ID: 8339933

Claim:
A method for transmitting an uplink pilot signal in a wireless communication system, the method comprising: forming a basic unit including a plurality of pilot Resource Elements (REs) and data REs for a first antenna port and a second antenna port and having a size of 4 subcarriers (subcarrier indexes of 0 to 3)×9 Orthogonal Frequency Division Multiple Access (OFDMA) symbols (symbol indexes of 0 to 8); setting the plurality of pilot REs for the first antenna port and the second antenna port in the basic unit; and transmitting the basic unit to a base station, wherein each of the REs is time-frequency resource defined by one symbol index and one subcarrier index, and wherein the setting of the pilot REs includes: arranging two pilot REs out of three pilot REs for the first antenna port at a subcarrier index of 0 and symbol indexes of 0 and 8, arranging the remaining one pilot RE out of the three pilot REs for the first antenna port at a subcarrier index of 3 and any one of symbol indexes of 2 to 6; arranging two pilot REs out of three pilot REs for the second antenna port at a subcarrier index of 3 and symbol indexes of 0 and 8; and arranging the remaining one pilot RE out of the three pilot REs for the second antenna port at a subcarrier index of 0 and any one of symbol indexes of 2 to 6.