Baseband data transmission of up to 19.2 Kbit/sec with a CCITT V32 recommendation-like structure using network management system facilities

Author

Alvarez, A.M.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

fYear

1991

fDate

11-14 Jun 1991

Firstpage

1029

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1991., IEEE International Sympoisum on

Print_ISBN

0-7803-0050-5

Type

conf

DOI

10.1109/ISCAS.1991.176540

Filename

176540