Title :
VLSI signal generation in echo canceler transceiver
Author :
Guinea, Jesus A. ; Hee, Wong
Author_Institution :
Nat. Semicond. Corp., Santa Clara, CA, USA
Abstract :
A pulse-shaper and convolver system suitable for a 2B1Q echo-canceler transceiver is presented. A very flexible, reproducible and testable digital circuit with 70-80-dB accuracy and linearity can be produced inexpensively in VLSI. Breadboard performance meets ISDN (integrated-services digital network) U-interface specifications. The approach has the flexibility to synthesize other baseband signals like 4B3T and 3B2T.<>
Keywords :
ISDN; VLSI; digital integrated circuits; echo suppression; signal generators; signal processing; subscriber loops; transceivers; 2B1Q; 3B2T; 4B3T; ISDN; U-interface specifications; VLSI signal generation; accuracy; baseband signal synthesis; convolver system; digital subscriber line transceivers; echo-canceler transceiver; flexibility; integrated-services digital network; linearity; pulse-shaper; testable digital circuit; Circuit testing; Convolvers; Digital circuits; Echo cancellers; ISDN; Integrated circuit synthesis; Linearity; Signal generators; Transceivers; Very large scale integration;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15058
