Method for transceiving data symbol using antenna correlation in wireless access system which supports massive antenna

A transmitting end transmitting data symbols using an antenna correlation in a wireless access system supporting multiple input/multiple output (MIMO), the transmitting end comprising:

• a receiver;
• a transmitter;
• a plurality of antennas;
• a memory;
• and
• a processor;
• wherein the memory is configured to store instructions for the processor, and
• wherein the processor is configured to:
• control the receiver to receive, from a receiving end, grouping information of a plurality of antennas for supporting the MIMO,
• wherein the grouping information includes bitmap information on two antenna subgroups selected from two or more antenna subgroups by the receiving end,
• wherein antennas of the plurality of antennas having the highest correlation are grouped into the two or more antenna subgroups by the receiving end,
• wherein the two antenna subgroups, of which a correlation is lowest from the two or more antenna subgroups, are selected from among the two or more antenna subgroups by the receiving end,
• select two antennas from each of the two selected antenna subgroups for transmitting the data symbols, the two antennas selected from each subgroup being two antennas having a highest correlation within the respective subgroup, and
• control the transmitter to transmit different data symbols through each of the two selected antennas of the two selected antenna subgroups on an identical time frequency resource.