Title :
A performance study of various echo canceller structures for full-duplex 2-wire transmission environment
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
A comparison is made of various echo canceller structures based on stochastic gradient search adaptive algorithms. These algorithms have been widely used in various adaptive filtering concepts like system identification and equalization. Due to full-duplex transmission over 2-wire connections, echo cancellation structures are considered. These structures allow transmission simultaneously in both directions using the complete channel bandwidth. The example selected is the full-duplex 2-wire CCITT V32-based modem environment used on private networks as well as PSTN connections
Keywords :
adaptive filters; echo suppression; signal processing; 2-wire transmission environment; CCITT V32-based modem; LMS type; PSTN connections; echo canceller structures; full-duplex transmission; interleaved baseband structure; passband structure; private networks; stochastic gradient search adaptive algorithms; two-wire connections; Adaptive algorithm; Adaptive filters; Convergence; Echo cancellers; Finite impulse response filter; Frequency; Least squares approximation; Modems; Passband; Signal processing algorithms;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176134
