Massive multiple-input multiple-output (MaMi) systems have attracted much research
attention during the last few years. This is because MaMi systems are able to achieve a …

The increasing demand for higher data rates motivates the exploration of advanced
techniques for future wireless networks. To this end, massive multiple-input multiple-output …

Future generations of wireless communications systems are expected to evolve toward
allowing massive ubiquitous connectivity and achieving ultra-reliable and low-latency …

Low-coherence sequences with low peak-to-average power ratio (PAPR) are crucial for
multi-carrier wireless communication systems and are used for pilots, spreading sequences …

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

This paper considers the problem of downlink (DL) training sequence design with limited
coherence time for frequency division duplex (FDD) massive MIMO systems in a general …

Training-based cellular communication systems use orthogonal pilot sequences to limit pilot
contamination. However, the orthogonality constraint imposes a certain pilot length, and …

Future wireless networks will require advance physical-layer techniques to meet the
requirements of Internet of Everything (IoE) applications and massive communication …

In this letter, we propose a superposition signaling of pilots and data scheme (SPD) for
beam-based frequency-division-duplex massive multiple-input multiple-output systems …

Massive multiple-input multiple-output (MIMO) systems use antenna arrays with a large
number of antenna elements to serve many different users simultaneously. The large …