Eliminating software adjustments in circuits based on digital logic improves robustness and reduces cost for small-production-run series. This circuit is a cost-improved version of classical QPSK ...

This paper is the study of the QPSK (Quadrature Phase Shift keying) modulation technique using AWGN (Additive White Gaussian Noise) and Multipath Rayleigh fading channel. In QPSK scheme the authors ...

A 1-GHz quadrature modulator, the AD8345 is designed for use as an IF modulator in cellular IS95, IS136, GSM and 3G basestation equipment as a direct conversion modulator within the CDMA/GSM 800/900 ...

As telecommunication technologies evolve there is an on-going drive for the development of high-performance systems for radio communications. Part of that evolution involves implementing components in ...

This series is excerpted from “3G Evolution, HSPA and LTE for Mobile Broadband, 2e.” Order this book today and receive an additional 20% discount. www.elsevierdirect.com and make sure to type in 92839 ...

ZMOD-X1 modulator series is an all inclusive unit that is fully loaded with features most needed by broadcasters today. In its most basic form, the unit comes with DVBS (QPSK), DVBS2 (QPSK and 8 PSK) ...