TRANSMISSION DEVICE, RECEIVING DEVICE, TRANSMISSION METHOD, AND RECEIVING METHOD

摘要

This invention is a transmission device capable of enhancing the reception characteristics of a terminal when employing transmit diversity using two antenna ports in an ePDCCH. In a base station (100) that transmits a reference signal to a terminal (200) using two antenna ports, a setting unit (102), on the basis of the reception quality of the terminal, sets as the aforementioned two antenna ports either a first antenna port pair for which DMRS (reference signals) do not undergo mutual code multiplexing, or a second antenna port pair for which the DMRS do undergo code multiplexing. A transmitter (109) transmits the DMRS from the two antenna ports set in the setting unit (102).

主权项

1. A transmission apparatus that transmits reference signals to a reception apparatus using two antenna ports, the transmission apparatus comprising:
a configuration section that configures one of a first antenna port pair and a second antenna port pair as the two antenna ports based on reception quality of the reception apparatus, the first antenna port pair being an antenna port pair in which the reference signals are not mutually code-multiplexed, the second antenna port pair being an antenna port pair in which the reference signals are code-multiplexed; and a transmission section that transmits the reference signals from the two configured antenna ports.