A 3.5-GHz Digitally-Controlled Open-Loop Fractional-N Frequency Divider in 28-nm CMOS
This paper describes the design and measurement of an open-loop fractional frequency divider implementation. The fractional divider consists of a multi-modulus integer […]
Analysis of HBT Vector Modulator Phase Shifters Based on Gilbert Cell for sub-THz Regimes
This paper concerns with the nonlinearity analysis and compensation of active phase shifters based on vector modulator topologies which utilize Gilbert cell […]
Q-GADMM
In this article, we propose a communication-efficient decentralized machine learning (ML) algorithm, coined quantized group ADMM (Q-GADMM) . To reduce the number […]
Unblurring the boundary between daily life and gameplay in location-based mobile games, visual online ethnography on Pokémon GO
Observing blending of realities, daily life and gameplay in location-based mobile games is challenging. This study aims at observing this blending by […]
Investigation of the Performance of TDoA-Based Localization Over LoRaWAN in Theory and Practice
The paper deals with the localization in a low-power wide-area-network (LPWAN) operating long-range wide-area-network (LoRaWAN) technology. The LoRaWAN is, today, one of […]
High Power 1.5 μm pulsed semiconductor laser design with a bulk active layer and an asymmetric waveguide
InGaAsP/InP high pulsed power lasers operating in the range of 1.3–1.6 μm have been intensely studied recently, with LIDAR technology being the […]
5G new radio in SATCOM
The 3GPP standardization body is actively investigating the requirements and specifying the radio access interface of 5G new radio (NR) systems to […]
Flexible planar supercapacitors by straightforward filtration and laser processing steps
There is ever increasing demand for flexible energy storage devices due to the development of wearable electronics and other small electronic devices. […]
STEAM in Oulu
There is an increased interest to integrate STEAM methodologies and digital fabrication processes into formal education. However, teachers have repeatedly reported a […]
Low Latency Decoder for Short Blocklength Polar Codes
Polar codes have been gaining a lot of interest due to it being the first coding scheme to provably achieve the symmetric […]