An apparatus for receiving a plurality of downlink, DL, signals from a base station, BS, and transmitting the plurality of received DL signals to a user equipment, UE, in a wireless communication system, the apparatus comprising: a plurality of reception antennas, N rx,REP Rx antennas, configured to receive the plurality of DL signals from the BS; a processor configured to map the plurality of received DL signals to at least one transmission antenna; and a plurality of transmission antennas, N tx,REP Tx antennas, configured to transmit the plurality of received DL signals to the UE, wherein the processor is configured to: - select M Tx antennas from among the N tx,REP Tx antennas, and map the plurality of received DL signals to the M Tx antennas, wherein the number of the Tx antennas, N tx,REP, is higher than the number of the Rx antennas, NN rx,REP, and M is the number of the Tx antennas which is used to transmit the plurality of received DL signals, and - if M is higher than N rx,REP, distribute at least one received DL signal from among the plurality of received DL signals, perform grouping of the M Tx antennas, and map the plurality of received DL signals including the distributed signals to the grouped M Tx antennas, characterised in that the grouping is performed based on a preference of each of the M Tx antennas regarding Rx antennas of the UE, and the value of M is decided based on one of: a) quality of a signal transmitted from the UE to the apparatus, and b) quality of a signal received in the UE from the apparatus. a plurality of reception antennas, N rx,REP Rx antennas, configured to receive the plurality of DL signals from the BS; a processor configured to map the plurality of received DL signals to at least one transmission antenna; and a plurality of transmission antennas, N tx,REP Tx antennas, configured to transmit the plurality of received DL signals to the UE, wherein the processor is configured to: - select M Tx antennas from among the N tx,REP Tx antennas, and map the plurality of received DL signals to the M Tx antennas, wherein the number of the Tx antennas, N tx,REP, is higher than the number of the Rx antennas, NN rx,REP, and M is the number of the Tx antennas which is used to transmit the plurality of received DL signals, and - if M is higher than N rx,REP, distribute at least one received DL signal from among the plurality of received DL signals, perform grouping of the M Tx antennas, and map the plurality of received DL signals including the distributed signals to the grouped M Tx antennas, characterised in that the grouping is performed based on a preference of each of the M Tx antennas regarding Rx antennas of the UE, and the value of M is decided based on one of: a) quality of a signal transmitted from the UE to the apparatus, and b) quality of a signal received in the UE from the apparatus. - select M Tx antennas from among the N tx,REP Tx antennas, and map the plurality of received DL signals to the M Tx antennas, wherein the number of the Tx antennas, N tx,REP, is higher than the number of the Rx antennas, NN rx,REP, and M is the number of the Tx antennas which is used to transmit the plurality of received DL signals, and - if M is higher than N rx,REP, distribute at least one received DL signal from among the plurality of received DL signals, perform grouping of the M Tx antennas, and map the plurality of received DL signals including the distributed signals to the grouped M Tx antennas, characterised in that the grouping is performed based on a preference of each of the M Tx antennas regarding Rx antennas of the UE, and the value of M is decided based on one of: a) quality of a signal transmitted from the UE to the apparatus, and b) quality of a signal received in the UE from the apparatus.