Adaptive equalization for DECT systems operating in low time-dispersive channels

Abstract

DECT (Digital European Cordless Telecommunication) is the current standard for digital cordless indoor communication in Europe. We investigate the use of channel equalization to increase the coverage area of DECT in large delays spread environments. We show that it is possible to use all equalizer and still stay within the DECT-common air interface. The equalizer structure is a decision feedback equalizer (DFE). The packet synchronizing word, which is used for slot synchronization, is used as trailing sequence for tap gain adjustment. For adaptation a recursive least squares (RLS) algorithm is used. The results show that the tolerable delay spread for receivers with an adaptive equalizer can be significantly increased depending on the length of the equalizer.<>