In this paper, new digital predistortion (DPD) solutions for power amplifier (PA) linearization are proposed, with particular emphasis on reduced processing complexity in future 5G and beyond wideband radio systems. The first proposed method, referred to as the spline-based Hammerstein (SPH) approach, builds complex spline-interpolated lookup table (LUT) followed by a linear finite impulse resp...

The peak power of the digital predistortion (DPD) will be uncontrollably expand when amplifier (PA) is driven in oversaturated state. To solve this problem, letter proposes a limited method. By filtering data used for coefficient extraction, predistorted signal can effectively controlled. memory effect PA considered during filtering. Less samples are needed which reduces computational cost. Sim...

Ultrafast superconductor digital microelectronic circuits operate at speeds up to 100 GHz, enabling true digital-RF architecture. This permits direct conversion between analog RF and digital baseband signals, replacing frequency and protocol-specific analog hardware with flexible, software-programmable digital processors. On the receive side, high sampling-speed (20 Gsamples/s) and linearity (>...

The Stretched-FrOnt-Leg (SFOL) pulse is a high-accuracy distance measuring equipment (DME) developed to support alternative positioning and navigation for aircraft during global satellite system outages. To facilitate the use of SFOL pulse, it best legacy DMEs that are already deployed transmit rather than current Gaussian through software changes only. When attempting in DMEs, greatest challen...