Several cancelers have been developed for coping with multipath arid loop coupling at relay stations in ISDBT digital terrestrial broadcasting systems using OFDM (Orthogonal Frequency Division Multiplexing) signals, This paper describes simplified iteratively adaptive algorithms based on a least means square method for cancellation filters, The use of an adaptive filter operating in IF bands greatly simplifies the required hardware, minimizes its size, and does not degrade the system performace. The results of a computer simulation showed that the algorithms can be used in OFDM digital broadcasting systems.
