Orthogonality in multibeam antennas is revisited. The difference between orthogonal
beamforming and zero-forced beamforming is highlighted. The intriguing relation between …

In this tutorial we present recipes for dynamic systemlevel simulations (SLSs) of 5G and
beyond cellular radio systems. A key ingredient for such SLSs is selection of proper models …

A major obstacle for widespread deployment of frequency division duplex (FDD)-based
Massive multiple-input multiple-output (MIMO) communications is the large signaling …

Accurate channel state information (CSI) is important for many candidate techniques of
future wireless communication systems. However, acquiring CSI can sometimes be difficult …

In 5G cellular communication systems, a new type of simulation methodology may be
required due to the emergence of new services and applications, new environments and …

In this paper we present a measurement set-up for massive MIMO channel sounding that
shows very good longterm phase stability. Initial measurements were performed in a …

The ongoing standardization within 3GPP for the so called new radio (NR) system has
identified massive multiple-input multiple output (MIMO) transmission, also called full …

In the 6G Internet of Things (IoT) paradigm, unprecedented challenges will be raised to
provide massive connectivity, ultra-low latency, and energy efficiency for ultra-dense IoT …

Despite the large volume of research on the field of model order selection, finding the correct
rank number can still be challenging. Propagation environments with many scatters may …

5G is the next mobile generation and it is expected to bring massive changes in our society.
Various technologies are being studied to be used with the future communication systems …