公开(公告)号：EP2830234A4

公开(公告)日：2015-04-22

申请号：EP13764602

申请日：2013-03-08

Applicant: PANASONIC IP CORP AMERICA

Inventor： YOSHIDA TADASHI ,  HORIUCHI AYAKO ,  IWAI TAKASHI ,  OGAWA YOSHIHIKO ,  NISHIO AKIHIKO

IPC: H04B7/06 ,  H04B7/04 ,  H04B7/08 ,  H04J11/00 ,  H04J13/00 ,  H04J99/00 ,  H04L5/00 ,  H04W16/28 ,  H04W72/04

CPC classification number: H04B7/0456 ,  H04B7/0632 ,  H04B7/068 ,  H04B7/0689 ,  H04B7/0691 ,  H04B7/0871 ,  H04B7/0874 ,  H04J13/00 ,  H04L5/0023 ,  H04L5/0051 ,  H04W16/28 ,  H04W72/04

Abstract: 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).