Performance of SQAM systems in a nonlinearly amplified multichannel interference environment
Abstract
The performance of superposed-quadrature amplitude-modulation (SQAM) systems in a nonlinearly amplified multichannel environment in the presence of additive white Gaussian noise (AWGN), intersymbol interference (ISI), adjacent-channel interference (ACI), and cochannel interference (CCI) is investigated. Typical system configurations are analyzed by means of computer simulations. The results demonstrate that SQAM modems outperform OQPSK, MSK, and IJF-OQPSK (or SQORC) modems.
- Publication:
-
IEE Proceedings F: Communications Radar and Signal Processing
- Pub Date:
- June 1985
- Bibcode:
- 1985IPCRS.132..175S
- Keywords:
-
- Amplitude Modulation;
- Channel Noise;
- Modems;
- Multichannel Communication;
- Performance Prediction;
- Radio Frequency Interference;
- Intersymbolic Interference;
- Limiter Amplifiers;
- Nonlinear Systems;
- Power Amplifiers;
- Quadratures;
- Random Noise;
- Signal Fading;
- Superposition (Mathematics);
- Transmission Efficiency;
- White Noise;
- Communications and Radar