This paper presents noncoherent limiter-discriminator detection and differential detection of FQPSK (Feher quadrature phase-shift-keying) with maximum-likelihood sequence estimation (MLSE) techniques. Noncoherent FQPSK systems are suitable for fast fading and cochannel interference channels and channels with strong phase noise, and they can offer faster synchronization and reduce outage events ...

ACKNOWLEDGEMENTS Our deepest gratitude goes first and foremost to our primary advisor Dr. Tommy Hult, for his constant support and guidance, and patience during the whole period of our thesis. Secondly, we would like to express our heartfelt gratitude to our teachers who instructed us a lot by their constructive suggestions and encouragement. Additionally, our big thanks also go to the departme...

This paper studies the performance of selected chaos-based communication systems whose spectrum overlaps with that of conventional narrowband systems. Such a scenario may occur in normal practice when chaos-based systems are introduced while the conventional systems are still in operation. The particular chaos-based systems under study are the coherent chaos-shift-keying (CSK) system and the no...

A photonics-based digital and analog self-interference cancellation approach for in-band full-duplex communication systems frequency-modulated continuous-wave radar is reported. One dual-drive Mach-Zehnder modulator used to implement the by pre-adjusting delay amplitude of reference signal applied in domain. The determined via received power, while searched cross-correlation bisection methods. ...

It has been recently reported that reflective semiconductor optical amplifiers (RSOAs) can be used as phase modulators for the cost-effective implementation of the high-speed wavelength-division-multiplexed passive optical networks (WDM PONs). For the detection of the phase-shift-keying (PSK) signal generated by using an RSOA, we should be able to estimate its carrier phase accurately at the di...

In this paper, we applied Continuous Phase Frequency Shift Keying (CPFSK) to Trellis Coded Quantization/Modulation (TCQ/TCM) and thus we called Trellis Coded Quantization/ Continuous Phase Modulation (TCQ/TCCPM) for this new system. In this new scheme we use continuous phase frequency shift keying signal set instead of phase shift keying signal set. As an example, an eight state TCQ/TCCPM syste...