A terminal, comprising: a processor, a memory, and a radio frequency unit, wherein the processor is configured to execute a program stored in the memory to perform: receiving a channel state information-reference signal (CSI-RS) from a base station; generating CSI feedback information including rank indication (RI), a beam index (BI), at least one wideband channel quality indicator (WB CQI), a WB first precoding matrix indicator (PMI), and a WB second PMI, on the basis of the CSI-RS; transmitting the RI, the WB first PMI, and the BI in an uplink subframe corresponding to periodicity of a first feedback subframe; and transmitting the at least one WB CQI and the WB second PMI in an uplink subframe corresponding to periodicity of a second feedback subframe, characterised in that : when transmitting the RI, the WB first PMI, and the BI in an uplink subframe corresponding to periodicity of a first feedback subframe, the processor performs: jointly encoding the RI and the WB first PMI using 5 bits; concatenating the encoded RI and WB first PMI to the BI to generate a bit stream; and performing channel coding for the bit stream by using a (20, 5+Q BI ) linear block code wherein the Q BI is the number of bits of the BI. a processor, a memory, and a radio frequency unit, wherein the processor is configured to execute a program stored in the memory to perform: receiving a channel state information-reference signal (CSI-RS) from a base station; generating CSI feedback information including rank indication (RI), a beam index (BI), at least one wideband channel quality indicator (WB CQI), a WB first precoding matrix indicator (PMI), and a WB second PMI, on the basis of the CSI-RS; transmitting the RI, the WB first PMI, and the BI in an uplink subframe corresponding to periodicity of a first feedback subframe; and transmitting the at least one WB CQI and the WB second PMI in an uplink subframe corresponding to periodicity of a second feedback subframe, receiving a channel state information-reference signal (CSI-RS) from a base station; generating CSI feedback information including rank indication (RI), a beam index (BI), at least one wideband channel quality indicator (WB CQI), a WB first precoding matrix indicator (PMI), and a WB second PMI, on the basis of the CSI-RS; transmitting the RI, the WB first PMI, and the BI in an uplink subframe corresponding to periodicity of a first feedback subframe; and transmitting the at least one WB CQI and the WB second PMI in an uplink subframe corresponding to periodicity of a second feedback subframe, characterised in that : when transmitting the RI, the WB first PMI, and the BI in an uplink subframe corresponding to periodicity of a first feedback subframe, the processor performs: jointly encoding the RI and the WB first PMI using 5 bits; concatenating the encoded RI and WB first PMI to the BI to generate a bit stream; and performing channel coding for the bit stream by using a (20, 5+Q BI ) linear block code wherein the Q BI is the number of bits of the BI. when transmitting the RI, the WB first PMI, and the BI in an uplink subframe corresponding to periodicity of a first feedback subframe, the processor performs: jointly encoding the RI and the WB first PMI using 5 bits; concatenating the encoded RI and WB first PMI to the BI to generate a bit stream; and performing channel coding for the bit stream by using a (20, 5+Q BI ) linear block code wherein the Q BI is the number of bits of the BI. <EOS>