Echo CancellerforOn-Channel Repeaters in

Inthispaper, a newadaptive algorithm applied toechocanceller foron-channel repeaters isproposed. Ateach repeater inasingle frequency network(SFN)forT-DMB,there areunwantedechosignals causedbythecoupling fromthe transmit antennatoreceive antenna. Gradient adaptive lattice (GAL)canbeusedasan adaptive filter tocancel outthose echosignals. Incomparison withotheradaptive algorithms, the orthogonalization properties oftheGAL algorithm provide a compromise incomputational complexity. Thispapershowscom- putersimulation results ofrateofconvergence (ROC)ofmean square error(MSE)compared tootheradaptive algorithms. Keywords- echocanceller, onchannel repeater, T-DMB,gra- dient adaptive lattice.