Title :
High speed data modem implementation using the TMS320C25
Author :
Tavares, G. ; Henriques, J. ; Piedade, M.S. ; Goncalves, Victor ; Costa, T. ; Gerald, J.
Author_Institution :
INESC/CEAUTL, Lisbon, Portugal
Abstract :
The implementation of a high-speed baseband data modem using the Texas Instruments TMS320C25 digital signal processor is described. The modem operates on public and leased two-wire circuits, at different bit rates, from 1200 b/s to 19200 b/s in full-duplex mode. Algorithms for adaptive echo cancelling, equalization, automatic level control, and clock recovery are described. Several modifications which enhance the modem´s overall performance are proposed
Keywords :
digital signal processing chips; echo suppression; equalisers; modems; 1200 to 19200 bit/s; TMS320C25; Texas Instruments; adaptive echo cancelling; automatic level control; baseband data modem; bit rates; clock recovery; data modem implementation; digital signal processor; equalization; full-duplex mode; leased two-wire circuits; Adaptive control; Adaptive equalizers; Baseband; Bit rate; Circuits; Digital signal processors; Instruments; Modems; Programmable control; Signal processing algorithms;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112614
