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On the implementation of adaptive electronic hybrid for digital subscriber loops

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2 Author(s)
Wei, C.-H. ; Nat. Chiao Tung Univ., Taiwan ; Kuo, N.-A.

An adaptive electronic hybrid is proposed to replace the conventional fixed hybrid in a digital subscriber loop and thus reduce the burden on the echo canceller. The theory of the adaptive hybrid is briefly reviewed. A simple method of hardware implementation is described in which the poles of the echo path transfer function are assumed to be constant. A three-residue adaptive electronic hybrid is realized by linear integrated circuits and shown experimentally to achieve at least 26-dB transhybrid loss

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Circuits and Systems, IEEE Transactions on  (Volume:35 ,  Issue: 8 )