An example method of mapping a set of reference signal samples to subcarriers is disclosed. First and second subsets of samples having contiguous index values are determined. The second subset of samples are mapped to a first subset of subcarriers, such that a first sample of the second subset of samples having a lowest index value of the second subset of samples is mapped to a first subcarrier at a first end of a bandwidth. The first subset of samples are mapped to a second subset of subcarriers of the bandwidth, such that a last sample of the first subset of samples having a highest index value of the first subset of samples is mapped to a last subcarrier at an opposite second end of the bandwidth. A complementary method of demapping subcarriers is also disclosed.