An Optimum Phase Reference Detector for Fully Modulated Phase-Shift Keyed Signals
- 1 July 1969
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Aerospace and Electronic Systems
- Vol. AES-5 (4), 627-631
- https://doi.org/10.1109/taes.1969.309945
Abstract
Many modern telemetry systems which use phase-shift keying (PSK) have receivers which derive a coherent reference from the fully modulated PSK signal itself and thus conserve the energy which otherwise would be allocated to a discrete reference signal. In this paper, an optimum receiver structure for estimating a phase reference from the PSK signal itself is derived and its realization discussed. It is shown that at low signal-to-noise ratios, the optimum detector can be realized with a Costas loop. Since a Costas loop and squaring loop exhibit identical performance, it follows that either of these simple devices gives optimum performance for low-input signal-to-noise ratios.Keywords
This publication has 4 references indexed in Scilit:
- An Optimum Phase Reference Detector for Fully Modulated Phase-Shift Keyed SignalsIEEE Transactions on Aerospace and Electronic Systems, 1969
- Subcarrier Tracking Methods and Communication System DesignIEEE Transactions on Communications, 1968
- Phase-Shift-Keyed Signal Detection with Noisy Reference SignalsIEEE Transactions on Aerospace and Electronic Systems, 1966
- Synchronous CommunicationsProceedings of the IRE, 1956