Waveform design principles for 5G and beyond

Various emerging applications in future wireless networks require rethinking the access techniques not only from the capacity perspective but also satisfying a wide variety of requirements under the same framework. Traditional Orthogonal Frequency Division Multiplexing (OFDM)-based schemes still suffer from some limitations that stand in front of their existence in future technologies. The main goal of this study is to pave the way towards rethinking the waveform design by providing the main components of a wireless communication system. The concept of the multidimensional lattice is introduced, exploiting the angular dimension that opens a new horizon in research for 5G technology and beyond. The study proposes a new way of waveform design procedure that considers the multidimensional grid, which is essential for exploiting the opportunities in spatial domain effectively. In addition, the waveform design criteria for various applications and frequency bands are presented.