Equalization of Doubly Selective Channels Using Iterative and Recursive Methods

Novel iterative and recursive schemes for the equalization of time-varying fre- quency selective channels are proposed. Such doubly selective channels are shown to be common place in mobile communication systems, for example in second generation systems based on time division multiple access (TDMA) and so-called beyond third generation systems most probably utilizing orthogonal frequency division multiplex- ing (OFDM).