In recent years, deepening has almost invaded the world of electronics. telecom and other fields, given the spectacular results it achieves in terms of improving the performance of digital processing chains, the Doppler effect as well as the multipath effect that a vane channel presents in the performance of the transmission chain form size or memo, the effects of ISI and ICI interference remain unavoidable phenomena, the improvement q brings the LS, MMSE channel estimation methods and the equalizers contribute to the reduction of the beer in the chain