METHOD AND DEVICE FOR TRANSMITTING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

摘要

Disclosed are a method and device for transmitting a reference signal in a wireless communication system. A base station: maps each demodulation reference signal (DMRS) of each of a plurality of layers into a first resource element (RE) set and a second resource element set including four resource elements over four orthogonal frequency division multiplexing (OFDM) symbols within a subframe; allocates first orthogonal cover codes (OCCs) having a length of 4 to each DMRS mapped into said first resource element set; allocates second OCCs having a length of 4 to each DMRS mapped into said second resource element set; and transmits each DMRS mapped into said first resource element set and said second resource element set. Said subframe includes two slots, and each slot includes six OFDM symbols. Said second OCC are formed by respectively swapping positions of bits that constitute said first OCCs.