A high capacity fully digitalized modulator for digital radios

Author

Shirato, Tadashi ; Okada, Takashi

Author_Institution

NTT Radio Commun. Syst. Lab., Kanagawa, Japan

fYear

1992

Firstpage

1870

Abstract

A high capacity fully digitized modulator using parallel phase process techniques is developed for digital radio systems. Through the use of 1.2-μm BiCMOS technology, a modulator-LSI (MOD LSI) which guarantees 112-MHz operation is fabricated. Experimental results obtained for a 16 quadrature amplitude modulation (QAM) modem with the MOD LSI show that this modem can be applied directly to a sub-STM-1(51.84 Mbps) of synchronous digital hierarchy (SDH) system, to increase its cost-effectiveness, reliability and performance

Keywords

BiCMOS integrated circuits; amplitude modulation; digital integrated circuits; digital radio systems; large scale integration; modems; modulators; 1.2 micron; 112 MHz; 16 quadrature amplitude modulation; 16QAM; 51.84 Mbit/s; BiCMOS technology; SDH; VHF; digital radio systems; high capacity digital modulator; modem; modulator-LSI; parallel phase process; reliability; synchronous digital hierarchy; Baseband; BiCMOS integrated circuits; Digital modulation; Forward error correction; Large scale integration; Modems; Phase modulation; Quadrature amplitude modulation; Signal processing; Synchronous digital hierarchy;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1992. Conference Record., GLOBECOM '92. Communication for Global Users., IEEE

Conference_Location

Orlando, FL

Print_ISBN

0-7803-0608-2

Type

conf

DOI

10.1109/GLOCOM.1992.276706

Filename

276706