In the fifth generation (5G) of wireless communication systems, hitherto unprecedented
requirements are expected to be satisfied. As one of the promising techniques of addressing …

The increasing demand of mobile Internet and the Internet of Things poses challenging
requirements for 5G wireless communications, such as high spectral efficiency and massive …

This two-part paper considers an uplink massive device communication scenario in which a
large number of devices are connected to a base station (BS), but user traffic is sporadic so …

For the last few decades, wireless communication has been facing a technological
revolution. High data rate and continuous connectivity are the necessities because the …

The fifth generation of cellular communication systems is foreseen to enable a multitude of
new applications and use cases with very different requirements. A new 5G multi-service air …

Driven by the explosive data traffic and new quality of service requirement of mobile users,
the communication industry has been experiencing a new evolution by means of network …

To address the vast variety of user requirements, applications, and channel conditions,
flexibility support is strongly highlighted for 5G radio access technologies (RATs). For this …

As it becomes increasingly apparent that 4G will not be able to meet the emerging demands
of future mobile communication systems, the question what could make up a 5G system …

This paper considers a massive random access problem in which a large number of
sporadically active devices wish to communicate with a base station (BS) equipped with …

In this paper, we introduce a comprehensive grant-free random access scheme for machine-
type communication which is characterized by massive connectivity and low latency. The …