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The perspective for the next generation of wireless communicationsprognosticates that the communication should take place with high heterogeneityin terms of services and specifications. The emergence of new communicationnetworks, especially between devices like internet of things (IoT) networks,machine type communications (MTC) and unmanned aerial vehicles (UAV), makes theredesign 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 challengingneeds. This highlights the necessity to overrides classical waveforms andpropose new air interface that best fits these requirements. Several attemptswere conducted to propose the most suitable prototype filters and theirassociated waveforms that support the future applications with these crucialprerequisites. In the present paper, we analyze the most important markedprototype filters reported in literature, and their corresponding waveformsproposed as prominent candidates for wireless air interface. We will show thatthe filter properties impact the waveform performances and that a closefilter-waveform interrelationship is there. The principal contribution is togive a deep insight on the structure of these filters and waveforms and to comeup with a fair comparison regarding different criteria and distinct figures ofmerit.

Prototype Filters and Filtered Waveforms for Radio Air-Interfaces: A Review