Abstract: An indoor unit is used in an air conditioner capable of executing a cooling operation by circulating a refrigerant. The indoor unit includes an indoor heat exchanger, a drain pan, a drain pump, and an indoor controller. The indoor heat exchanger (50) exchanges heat between the refrigerant and indoor air. The drain pan receives water generated in the indoor heat exchanger. The drain pump sucks up the water from the drain pan. At a time of executing the cooling operation, the indoor controller operates the drain pump when an evaporation temperature of the refrigerant in the indoor heat exchanger is equal to or lower than a dew point temperature of the indoor air. At the time of executing the cooling operation, the indoor controller controls the drain pump so as to have a period in which operation of the drain pump is not performed when the evaporation temperature of the refrigerant is higher than the dew point temperature.

Abstract: A wireless communication device includes: a plurality of antennas receiving signals transmitted from one or more transmission antennas; a synthesis calculation unit performing a synthesis calculation of respective reception signals received by the plurality of antennas and reception weights corresponding to respective antenna ports; a channel estimation unit calculating respective estimated channel values from respective synthesized signals obtained by the synthesis calculation for the respective antenna ports, and a decoding unit performing decoding from the respective estimated channel values and the synthesized signals for the respective antenna ports.

Abstract: A wireless communication device includes: a plurality of antennas receiving signals transmitted from one or more transmission antennas; a synthesis calculation unit performing a synthesis calculation of respective reception signals received by the plurality of antennas and reception weights corresponding to respective antenna ports; a channel estimation unit calculating respective estimated channel values from respective synthesized signals obtained by the synthesis calculation for the respective antenna ports, and a decoding unit performing decoding from the respective estimated channel values and the synthesized signals for the respective antenna ports.