New direct regenerator for 16-ary QAM signalling
Abstract
This paper proposes a new 16-ary quadrature amplitude modulation (QAM) direct regenerator to be used in digital communications systems. Theoretical analysis follows to evaluate the performance of a two-link system in additive Gaussian noise (AGN) incorporating a practical 16-ary QAM direct regenerator and an ideal coherent receiver. In addition to nonlinearities and circuit limitations in the regenerator, optimum detection in the receiver is also taken into account.
- Publication:
-
IEE Proceedings F: Communications Radar and Signal Processing
- Pub Date:
- July 1984
- Bibcode:
- 1984IPCRS.131..407R
- Keywords:
-
- Amplitude Modulation;
- Channel Noise;
- Digital Systems;
- Performance Prediction;
- Regenerators;
- Signal Transmission;
- Error Analysis;
- Nonlinear Systems;
- Probability Theory;
- Pulse Communication;
- Quadratures;
- Radio Transmission;
- Random Noise;
- Satellite Transmission;
- Signal To Noise Ratios;
- Transmission Efficiency;
- Communications and Radar