Method for generating reference signals

A device for generating reference signals for a cellular wireless communication system having a set of resource blocks, each resource block comprising a plurality of resource elements, comprising:

• a processor configured to shift frequency in the resource blocks belonging to a subset of resource blocks, wherein each reference signal is associated with an antenna port in a cell, and wherein at least one reference signal in a cell is transmitted on at least one resource element only in resource blocks belonging to said subset of said set of resource blocks, and wherein the frequency shifting of the resource blocks belonging to said subset of resource blocks is cell-specific and is determined from an integer sequence having a length less than or equal to a total number of cell identities in said cellular wireless communication system;
• wherein said integer sequence is periodic, having a sequence length equal to said total number of cell identities and comprises elements from a set having vshiftRB number of elements, wherein vshiftRB denotes the total number of frequency shifts, of the resource blocks belonging to said subset of resource blocks , in number of resource blocks.