Method and apparatus for transmitting signal of device to device user equipment in wireless communication system

A user equipment for transmitting a D2D (device-to-device) signal in a wireless communication system, the user equipment comprising:

• a transmit module;
• and
• a processor,
• wherein the processor is configured to:
• generate K bits of a codeword from N bits of information,
• allocate the K bits of the codeword to a 1st block and a 2nd block,
• perform interleaving on each of the 1st block and the 2nd block,
• map codewords of the 1st block and the 2nd block on which the interleaving is performed to a plurality of symbols in a subframe, and
• control the transmit module to transmit the mapped codewords,
• wherein a size of the 2nd block is determined according to the number of symbols related to a guard period among the plurality of the symbols, and
• wherein the size of the 2nd block is
• K
• ×
• N
• symb
• GP
• 2
• ⁢
• N
• symb
• ,
• where K is a bit number of the codeword, NsymbGP is the number of the symbols related to the guard period, and Nsymb is the number of symbols in each slot.