Patent ID: 8509170

Claim:
A method for transmitting a preamble in a wireless communication system, the method comprising: transmitting a preamble sequence through a plurality of transmit antennas, wherein a number of sub-blocks of the preamble sequence allocated to a k th antenna is determined based on the following equation: N st , k = ⌊ N si + N t - 1 - mod ⁡ ( k - p , N t ) N t ⌋ p = ⌊ N t - mod ⁡ ( N si , N t ) 2 ⌋ where N st,k denotes the number of sub-blocks allocated to an antenna k, N si denotes the total number of sub-blocks for an irregular channel bandwidth, N t denotes the number of the transmit antennas, and k denotes an antenna index, k having a value of 0,1, . . . , N t −1.