In coherent optical systems, fiber non-linearity is a consistent limiting factor towards the effective signal-to-noise ratio though being mitigated by various digital signal processing based approaches. this paper, an intrinsic method of on shape input constellation employed to yield novel tolerant geometric constellation. 16-QAM back-to-back system optimized for minimum value non-linear interf...

Non-linearity of wireless transceivers, specifically power amplifier (PA) non-linearity, could pose major limitations towards having high throughput, and cost energy efficient communication systems. Such from the PA is typically compensated in transmitter, e.g. by applying back-off or performing digital-pre-distortion (DPD) aiming to linearize transmitter. However, leads lower efficiency, outpu...