Non-convex Optimization in Digital Pre-distortion of the Signal

Applications of convex optimization in signal processing and digital communication

In the last two decades, the mathematical programming community has witnessed some spectacular advances in interior point methods and robust optimization. These advances have recently started to significantly impact various fields of applied sciences and engineering where computational efficiency is essential. This paper focuses on two such fields: digital signal processing and communication. I...

Applications of convex optimization in signal processing and digital

In the last two decades, the mathematical programming community has witnessed some spectacular advances in interior point methods and robust optimization. These advances have recently started to significantly impact various fields of applied sciences and engineering where computational efficiency is essential. This paper focuses on two such fields: digital signal processing and communication. I...

Time delay estimation in digital pre-distortion

OFDM communications require extreme linearity of High Power Amplifiers (HPA) to avoid Inter-Carrier Interference (ICI) and subsequent degradation of the BER and Quality of Service (QoS). Amplitude (AM/AM) and Phase (AM/PM) amplifier non-linearities can be compensated in a number of ways. Nevertheless, digital adaptive schemes based on least squares optimization criteria need estimate the delay ...

Adaptive Non-linear Pre-distortion

∙ Suitable for digital modulation (QAM, OFDM). ∙ 3rd and 5th order distortion correction. ∙ Iterative Minimum Mean Square Error algorithm. ∙ Complex 3rd and 5th order coefficient estimation and real-time application. ∙ Selectable iterative algorithm convergence speed. ∙ Automatic timing recovery on feedback signal. ∙ Automatic phase recovery on feedback signal. ∙ Automatic forward power control...

Convex Optimization in Signal Processing and Communications