  The perspective for the next generation of wireless communications
prognosticates that the communication should take place with high heterogeneity
in terms of services and specifications. The emergence of new communication
networks, especially between devices like internet of things (IoT) networks,
machine type communications (MTC) and unmanned aerial vehicles (UAV), makes the
redesign of the radio air-interfaces even higher significant. High data rate,
efficient use of the spectrum, low latency, flexibility, scalable ability,
energy efficiency and reduced complexity are in the vanguard of the challenging
needs. This highlights the necessity to overrides classical waveforms and
propose new air interface that best fits these requirements. Several attempts
were conducted to propose the most suitable prototype filters and their
associated waveforms that support the future applications with these crucial
prerequisites. In the present paper, we analyze the most important marked
prototype filters reported in literature, and their corresponding waveforms
proposed as prominent candidates for wireless air interface. We will show that
the filter properties impact the waveform performances and that a close
filter-waveform interrelationship is there. The principal contribution is to
give a deep insight on the structure of these filters and waveforms and to come
up with a fair comparison regarding different criteria and distinct figures of
merit.
