An apparatus, comprising: a processor; and memory including computer program code; said memory and said computer program code configured to, with said processor, cause said apparatus to perform at least the following: generate a dedicated reference signal for each subframe assuming that said dedicated signal is to be mapped to a plurality of physical resource blocks that span a range of frequency and time components corresponding to the system bandwidth or full bandwidth of a cell associated with a base station of an Orthogonal Frequency Division Multiplexing, OFDM, based wireless communication system allocate resource elements of an assigned physical resource block from said plurality of physical resource blocks to a user equipment, and generate a user equipment-specific reference signal by selecting the elements of said dedicated reference signal corresponding to the physical resource blocks assigned to the user equipment and actually mapping those elements onto the resource elements of said assigned physical resource block foreseen for transmission of user equipment-specific reference signals, wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to initialize said user equipment-specific reference signal in each subframe according to a subframe number, wherein the generation of the dedicated reference signal is performed in accordance with the respective subframe number. a processor; and memory including computer program code; said memory and said computer program code configured to, with said processor, cause said apparatus to perform at least the following: generate a dedicated reference signal for each subframe assuming that said dedicated signal is to be mapped to a plurality of physical resource blocks that span a range of frequency and time components corresponding to the system bandwidth or full bandwidth of a cell associated with a base station of an Orthogonal Frequency Division Multiplexing, OFDM, based wireless communication system allocate resource elements of an assigned physical resource block from said plurality of physical resource blocks to a user equipment, and generate a user equipment-specific reference signal by selecting the elements of said dedicated reference signal corresponding to the physical resource blocks assigned to the user equipment and actually mapping those elements onto the resource elements of said assigned physical resource block foreseen for transmission of user equipment-specific reference signals, wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to initialize said user equipment-specific reference signal in each subframe according to a subframe number, wherein the generation of the dedicated reference signal is performed in accordance with the respective subframe number. generate a dedicated reference signal for each subframe assuming that said dedicated signal is to be mapped to a plurality of physical resource blocks that span a range of frequency and time components corresponding to the system bandwidth or full bandwidth of a cell associated with a base station of an Orthogonal Frequency Division Multiplexing, OFDM, based wireless communication system allocate resource elements of an assigned physical resource block from said plurality of physical resource blocks to a user equipment, and generate a user equipment-specific reference signal by selecting the elements of said dedicated reference signal corresponding to the physical resource blocks assigned to the user equipment and actually mapping those elements onto the resource elements of said assigned physical resource block foreseen for transmission of user equipment-specific reference signals, wherein said memory and said computer program code are further configured to, with said processor, cause said apparatus to initialize said user equipment-specific reference signal in each subframe according to a subframe number, wherein the generation of the dedicated reference signal is performed in accordance with the respective subframe number.