Terminal, radio communication method, and base station

A radio communication method for a terminal, the radio communication method comprising:

• using a first orthogonal cover code for any one of not more than eight DMRS ports for a demodulation reference signal (DMRS) configuration type 1 and not more than 12 DMRS ports for a DMRS configuration type 2, and using a second orthogonal cover code for any one of more than eight DMRS ports for the DMRS configuration type 1 and more than 12 DMRS ports for the DMRS configuration type 2;
• and
• transmitting or receiving DMRSs using the DMRS ports.

A base station comprising:

• a control section that uses a first orthogonal cover code for any one of not more than eight DMRS ports for a demodulation reference signal (DMRS) configuration type 1 and not more than 12 DMRS ports for a DMRS configuration type 2, and uses a second orthogonal cover code for any one of more than eight DMRS ports for the DMRS configuration type 1 and more than 12 DMRS ports for the DMRS configuration type 2;
• and
• a transmitting/receiving section that transmits or receives DMRSs using the DMRS ports.