Patent ID: 9258038
Filing Date: 2016-02-09
CPC Classification: H04B,H04L

Claim Text:
1. A method for transmitting a reference signal in a multi-antenna system, the method comprising: allocating at least one reference signal in a subframe containing a plurality of orthogonal frequency division multiplexing (OFDM) symbols; and transmitting the allocated at least one reference signal, wherein each of the at least one reference signal is allocated to a total of two resource elements in two OFDM symbols of the subframe, and wherein when reference signals are transmitted on eight antennas, a reference signal for a first antenna and a reference signal for a second antenna are transmitted through same two resource elements having a first frequency in the two OFDM symbols, a reference signal for a third antenna and a reference signal for a fourth antenna are transmitted through same two resource elements having a second frequency in the two OFDM symbols, a reference signal for a fifth antenna and a reference signal for a sixth antenna are transmitted through same two resource elements having a third frequency in the two OFDM symbols, and a reference signal for a seventh antenna and a reference signal for an eighth antenna are transmitted through same two resource elements having a fourth frequency in the two OFDM symbols.