Simple non-coherent equaliser for the DECT system

A non-coherent equaliser structure suitable for DECT-type systems is introduced which performs equalisation at the output of a differential detector. It employs a two-state Viterbi algorithm using a simple channel estimation process. Performance assessments are presented which suggest that the new receiver can yield significant improvements with respect to standard non-coherent receivers in dispersive channels. At the same time, unlike coherent equaliser structures, it remains largely unaffected by both modulation index drifts and frequency offsets