Comparison of PSK and of multilevel AM data modulators
- 1 August 1976
- journal article
- research article
- Published by Taylor & Francis in International Journal of Electronics
- Vol. 41 (2) , 153-158
- https://doi.org/10.1080/00207217608920622
Abstract
Coherent quaternary PSK (QPSK) and quaternary AM (QAM) models are compared and conditions for their equivalence are presented. Hardware design problems of both ‘soft’ and ‘hard’ driven integrated circuits and balanced mixers and their applications in systems are described. An approach to PSK modulator design employing only digital circuits is also discussed. The theory is illustrated using measurements taken at a rate of 1[sdot]544 Mbit/s.Keywords
This publication has 1 reference indexed in Scilit:
- Performance Evaluation Criteria of Hybrid Microwave SystemsIEEE Transactions on Communications, 1974