A wireless communication device comprising: a receiver to receive an analog single-carrier wireless communication signal representing a first plurality of time-domain samples at a first sampling rate; to convert said analog single-carrier wireless communication signal into a digital signal including a second plurality of time-domain samples at a second sampling rate to convert said second plurality of time-domain samples into a first plurality of frequency-domain samples; and to map said first plurality of frequency-domain samples into a second plurality of frequency-domain samples at said first sampling rate, wherein said receiver is to determine at least one subset of said second plurality of frequency-domain samples by combining at least two subsets of said first plurality of frequency-domain samples, and characterised in that: said second sampling rate is equal to one and a half times the first sampling rate, and said first plurality of frequency-domain samples comprises six sub-sets of frequency-domain samples, B1-B6, wherein said second plurality of frequency-domain samples comprises four sub-sets of frequency-domain samples, A1-A4, and wherein mapping said first plurality of frequency-domain samples comprises mapping a first sub-set, B1, of said six subsets to a first sub-set, A1, of said four sub-sets, mapping second and fourth sub-sets, B2 and B4, of said six subsets to a second sub-set, A2, of said four sub-sets as B2+B4, mapping third and fifth sub-sets, B3 and B5, of said six subsets to a third sub-set, A3, of said four sub-sets as B3+B5, and mapping a sixth sub-set, B6, of said six subsets to a fourth sub-set, A4, of said four sub-sets. a receiver to receive an analog single-carrier wireless communication signal representing a first plurality of time-domain samples at a first sampling rate; to convert said analog single-carrier wireless communication signal into a digital signal including a second plurality of time-domain samples at a second sampling rate to convert said second plurality of time-domain samples into a first plurality of frequency-domain samples; and to map said first plurality of frequency-domain samples into a second plurality of frequency-domain samples at said first sampling rate, wherein said receiver is to determine at least one subset of said second plurality of frequency-domain samples by combining at least two subsets of said first plurality of frequency-domain samples, and characterised in that: said second sampling rate is equal to one and a half times the first sampling rate, and said first plurality of frequency-domain samples comprises six sub-sets of frequency-domain samples, B1-B6, wherein said second plurality of frequency-domain samples comprises four sub-sets of frequency-domain samples, A1-A4, and wherein mapping said first plurality of frequency-domain samples comprises mapping a first sub-set, B1, of said six subsets to a first sub-set, A1, of said four sub-sets, mapping second and fourth sub-sets, B2 and B4, of said six subsets to a second sub-set, A2, of said four sub-sets as B2+B4, mapping third and fifth sub-sets, B3 and B5, of said six subsets to a third sub-set, A3, of said four sub-sets as B3+B5, and mapping a sixth sub-set, B6, of said six subsets to a fourth sub-set, A4, of said four sub-sets. said second sampling rate is equal to one and a half times the first sampling rate, and said first plurality of frequency-domain samples comprises six sub-sets of frequency-domain samples, B1-B6, wherein said second plurality of frequency-domain samples comprises four sub-sets of frequency-domain samples, A1-A4, and wherein mapping said first plurality of frequency-domain samples comprises mapping a first sub-set, B1, of said six subsets to a first sub-set, A1, of said four sub-sets, mapping second and fourth sub-sets, B2 and B4, of said six subsets to a second sub-set, A2, of said four sub-sets as B2+B4, mapping third and fifth sub-sets, B3 and B5, of said six subsets to a third sub-set, A3, of said four sub-sets as B3+B5, and mapping a sixth sub-set, B6, of said six subsets to a fourth sub-set, A4, of said four sub-sets.