A multicarrier QAM modulator for WCDMA base-station with on-chip D

In this paper, design and implementation of a multicarrier quadrature amplitude modulation (QAM) modulator for a wideband code division multiple access (WCDMA) base-station with a 14-bit on-chip D/A converter is described. The modulator is capable of modulating four carriers with four independent in...

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Bibliographic Details
Published in:	IEEE Transactions on VLSI systems 13, 2 (2005).
Main Author:	Kosunen, M.
Format:	Article
Language:	English
Subjects:	0.35 micron. 14 bit. BiCMOS process. CMOS transistors. SINC attenuation effect. Si. WCDMA base station. Coordinate rotation digital computer vector rotation algorithm. Current steering D/A converter. Four digital frequency modulators. Four digital frequency synthesizer. Image filtering. Interpolation chain. Inverse SINC predistortion filter. Modulated carriers. Modulator structure. Multicarrier QAM modulator. Multicarrier WCDMA signal. Multicarrier quadrature amplitude modulation modulator. On-chip D/A converter. Quadrature data streams. Root raised cosine pulse shaping filter. Silicon chip. Three half band filters. Wideband code division multiple access base station.