Title :
A new variable fractional sample delay filter with nonlinear interpolation
Author :
Liu, Ging-Shing ; Wei, Che-Ho
Author_Institution :
Inst. of Electron., Nat. Chiao Tung Univ., Hsin Chu, Taiwan
Abstract :
A finite impulse response (FIR) filter is presented which can synthesize any fractional sample delay by nonlinear interpolation. This circuit can be used as a digital interpolator capable of compensating for the delay time between the echo canceller output and the receiver input for the V.32 full-duplex modem or the U-transceiver in digital subscriber loop (DSL). Analytic closed-forms for the tap weights of such an FIR filter and numerical verifications are presented
Keywords :
compensation; delay circuits; digital filters; interpolation; polynomials; signal processing; FIR filter; U-transceiver; V.32 full-duplex modem; digital interpolator; digital subscriber loop; echo canceller output; finite impulse response; fractional sample delay filter; nonlinear interpolation; receiver input; tap weights; variable type; Clocks; Computer simulation; DSL; Delay effects; Digital systems; Finite impulse response filter; Interpolation; Polynomials; Propagation delay; Signal sampling;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176022
