Echo cancellation in two-wire full-duplex data transmission is usually performed with data-driven transversal filters. In this paper

a new scheme for a microprocessor-based digital adaptive echo canceler is propsed. Since the estimated echo signals are directly derived from the binary data code

the amount of manipulation is reduced by a factor of 3 - 5 compared with conventional manipulation. A theoretical analysis of adaptation convergence

and computational complexity is given

and the convergence characteristic of MTEC is verified by the computer simulations.