Title :
Baseband data transmission of up to 19.2 Kbit/sec with a CCITT V32 recommendation-like structure using network management system facilities
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
The author presents a baseband data modem deploying a V32-like structure to improve the bit-error-rate (BER) performance. Conventionally, baseband data modems use line or block codes (e.g. alternate mark inversion (AMI), 4B3T, etc.) based on partial response coding techniques. Here, a variation of the CCITT V32 recommendation which uses quadrature amplitude modulation (QAM) together with trellis-coded modulation (TCM) with 64 carrier states is used. This combination provides an error-free transmission of approximately 3 km more than that of the conventional technique previously used
Keywords :
amplitude modulation; encoding; modems; 19.2 kbit/s; BER performance; CCITT V32 recommendation-like structure; baseband data modem; carrier states; error-free transmission; network management system facilities; quadrature amplitude modulation; trellis-coded modulation; Ambient intelligence; Amplitude modulation; Baseband; Bit error rate; Data communication; Galvanizing; Modems; Modulation coding; Quadrature amplitude modulation; Telephony;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176540
