L. Wei, R. Q. Hu, Y. Qian, and G. Wu, Key elements to enable millimeter wave communications for 5G wireless systems, IEEE Wireless Communications, vol.21, pp.136-143, 2014.

M. R. Akdeniz, Y. Liu, M. K. Samimi, S. Sun, S. Rangan et al., Millimeter Wave Channel Modeling and Cellular Capacity Evaluation, IEEE Journal on Selected Areas in Communications, vol.32, pp.1164-1179, 2014.

H. G. Myung and D. J. Goodman, Single Carrier FDMA, 2008.

F. H. Raab, P. Asbeck, S. Cripps, P. B. Kenington, Z. B. Popovic et al., Power amplifiers and transmitters for RF and microwave, IEEE Trans. Microw. Theory Tech, vol.50, pp.814-826, 2002.

B. Farhang-boroujeny and H. Moradi, OFDM Inspired Waveforms for 5G, IEEE Communications Surveys Tutorials, vol.18, pp.2474-2492, 2016.

, 5G A Technology Vision, pp.1-16, 2013.

S. C. Thompson, A. U. Ahmed, J. G. Proakis, J. R. Zeidler, and M. J. Geile, Constant Envelope OFDM, IEEE Trans. Commun, vol.56, pp.1300-1312, 2008.

R. Mulinde, T. F. Rahman, and C. Sacchi, Constant-envelope SCFDMA for nonlinear satellite channels, 2013 IEEE Global Communications Conf. (GLOBECOM), pp.2939-2944, 2013.

J. Guerreiro, R. Dinis, and P. Montezuma, On the optimum performance of CE-OFDM schemes in frequency-selective channels, 2016 International Conference on Telecommunications and Multimedia (TEMU), pp.1-6, 2016.

C. Sacchi, E. Cianca, T. Rossi, and M. D. Sanctis, Analysis and assessment of the effects of phase noise in constant envelope multicarrier satellite transmissions, 2015 IEEE International Conference on Communications (ICC), pp.922-927, 2015.

, Rohde & Schwarz White Paper, pp.1-60, 2017.

Z. Ding, Z. Yang, P. Fan, and H. V. Poor, On the Performance of NonOrthogonal Multiple Access in 5G Systems with Randomly Deployed

, IEEE Signal Process. Lett, vol.21, pp.1501-1505, 2014.

R. Gerzaguet, N. Bartzoudis, L. G. Baltar, V. Berg, J. Doré et al., The 5G candidate waveform race: a comparison of complexity and performance, EURASIP Journal on Wireless Communications and Networking, vol.2017, p.13, 2017.

T. Wild, F. Schaich, and Y. Chen, 5G air interface design based on Universal Filtered (UF-)OFDM, 2014 19th International Conference on Digital Signal Processing, pp.699-704, 2014.

G. Fettweis, M. Krondorf, and S. Bittner, GFDM-Generalized Frequency Division Multiplexing, VTC Spring 2009-IEEE 69th Vehicular Technology Conference, pp.1-4, 2009.
DOI : 10.1109/vetecs.2009.5073571

A. G. Armada, Understanding the effects of phase noise in orthogonal frequency division multiplexing (OFDM), IEEE Trans. on Broadcasting, vol.47, pp.153-159, 2001.

S. Sen and A. Nehorai, Adaptive OFDM Radar for Target Detection in Multipath Scenarios, IEEE Trans. on Signal Processing, vol.59, pp.78-90, 2011.

R. B. Nunes, H. R. De-o-rocha, D. A. Mello, F. D. Simes, M. E. Segatto et al., Transmission of CE-OFDM Signals Over MMF Links Using Directly Modulated 850-nm VCSELs, IEEE Photonics Technology Letters, vol.27, pp.315-318, 2015.
DOI : 10.1109/lpt.2014.2370643

K. M. Rabie, E. Alsusa, A. D. Familua, and L. Cheng, Constant envelope OFDM transmission over impulsive noise power-line communication channels, 2015 IEEE Int. Symp. on Power Line Communications and Its Applications (ISPLC), pp.13-18, 2015.
DOI : 10.1109/isplc.2015.7147582

R. Magueta, D. Castanheira, A. Silva, R. Dinis, and A. Gameiro, Iterative space-frequency equalizer for CE-OFDM mmW based systems, 2016 IEEE Symp. on Computers and Communication (ISCC), pp.750-755, 2016.
DOI : 10.1109/iscc.2016.7543826

C. Sacchi, T. F. Rahman, N. Bartolomei, S. Morosi, A. Mazzinghi et al., Design and Assessment of a CE-OFDM-Based mm-Wave 5G Communication System, 2016 IEEE Globecom Workshops (GC Wkshps), pp.1-7, 2016.

A. U. Ahmed and J. R. Zeidler, Novel Low-Complexity Receivers for Constant Envelope OFDM, IEEE Trans. Signal Process, vol.63, pp.4572-4582, 2015.
DOI : 10.1109/tsp.2015.2441036

C. D. Chung, Spectral precoding for constant-envelope OFDM, IEEE Trans. Commun, vol.58, pp.555-567, 2010.
DOI : 10.1109/tcomm.2010.02.080682

M. Sharif, M. Gharavi-alkhansari, and B. H. Khalaj, On the peak-toaverage power of OFDM signals based on oversampling, IEEE Trans. Commun, vol.51, pp.72-78, 2003.

A. U. Ahmed, S. C. Thompson, and J. R. Zeidler, Constant Envelope OFDM with Channel Coding, MILCOM 2006-2006 IEEE Military Communications conference, pp.1-7, 2006.
DOI : 10.1109/milcom.2006.302189

T. S. Rappaport, G. R. Maccartney, M. K. Samimi, and S. Sun, Wideband Millimeter-Wave Propagation Measurements and Channel Models for Future Wireless Communication System Design, IEEE Trans. Commun, vol.63, pp.3029-3056, 2015.
DOI : 10.1109/tcomm.2015.2434384
URL : https://doi.org/10.1109/tcomm.2015.2434384

T. Wang, B. Huang, and Y. Wang, Bias-based self-organized cell selections for outdoor open-access picocell networks, 2013 IEEE Wir. Comm. and Networking Conf. (WCNC), pp.1180-1185, 2013.

, Further advancements for E-UTRA physical layer aspects, tech. rep, p.3, 2010.

L. Yan, W. Hong, G. Hua, J. Chen, K. Wu et al., Simulation and experiment on SIW slot array antennas, IEEE Microwave and Wireless Components Letters, vol.14, pp.446-448, 2004.

K. Wu, Towards system-on-substrate approach for future millimeterwave and photonic wireless applications, 2006 Asia-Pacific Microwave Conference, pp.1895-1900, 2006.

S. Cheng, H. Yousef, and H. Kratz, 79 GHz Slot Antennas Based on Substrate Integrated Waveguides (SIW) in a Flexible Printed Circuit Board, IEEE Trans. Antennas Propag, vol.57, pp.64-71, 2009.

M. Bozzi, L. Perregrini, K. Wu, and P. P. Arcioni, Current and future research trends in substrate integrated waveguide technology, vol.18, pp.201-209, 2009.

B. J. Chen, T. M. Shen, and R. B. Wu, Dual-Band Vertically Stacked Laminated Waveguide Filter Design in LTCC Technology, IEEE Trans. Microw. Theory Tech, vol.57, pp.1554-1562, 2009.

M. J. Buckley, Synthesis of shaped beam antenna patterns using implicitly constrained current elements, IEEE Trans. Antennas Propag, vol.44, pp.192-197, 1996.
DOI : 10.1109/8.481647

A. M. Bartolomei and A. Freni, A cosecant square pattern substrate integrated waveguide slot array for radar applications, p.10, 2016.

, European Conf. on Antennas and Propag. (EuCAP), pp.1-2, 2016.

R. Compton, R. Collin, and A. Theory, , 1969.

D. Zhao and P. Reynaert, A 40 nm CMOS E-Band Transmitter With Compact and Symmetrical Layout Floor-Plans, IEEE Journal of SolidState Circuits, vol.50, pp.2560-2571, 2015.

H. Holma and A. Toskala, LTE for UMTS: Evolution to LTE-Advanced, 2011.

J. Chen, A. Dholakia, E. Eleftheriou, M. P. Fossorier, and X. Hu, Reduced-Complexity Decoding of LDPC Codes, IEEE Trans. Commun, vol.53, pp.1288-1299, 2005.

J. Padhye, V. Firoiu, D. F. Towsley, and J. F. Kurose, Modeling TCP Reno performance: a simple model and its empirical validation, IEEE/ACM Trans. on Networking, vol.8, pp.133-145, 2000.

C. Sacchi, T. F. Rahman, I. A. Hemadeh, and M. El-hajjar, MillimeterWave Transmission for Small-Cell Backhaul in Dense Urban Environment: a Solution Based on MIMO-OFDM and Space-Time Shift Keying (STSK), IEEE Access, vol.5, pp.4000-4017, 2017.

M. K. Samimi and T. S. Rappaport, 3-D statistical channel model for millimeter-wave outdoor mobile broadband communications, 2015 IEEE International Conference on Communications (ICC), pp.2430-2436, 2015.

M. K. Samimi and T. S. Rappaport, Local multipath model parameters for generating 5G millimeter-wave 3GPP-like channel impulse response, 2016 10th European Conf. on Antennas and Propag. (EuCAP), pp.1-5, 2016.

J. Ibanez-diaz, C. Pantaleon, I. Santamaria, T. Fernandez, and D. Martinez, Nonlinearity estimation in power amplifiers based on subsampled temporal data, IEEE Trans. Instrum. Meas, vol.50, pp.882-887, 2001.

R. Mwave, GHz Receiver Module RxM73WR12, pp.71-76, 2015.

R. G. Maunder, The 5G channel code contenders, pp.1-13, 2016.

, he was Assistant Professor at Center for Advanced Studies in Telecommunications (CAST) in COMSATS Institute of Information Technology, Islamabad Pakistan. The research interests of Dr, 2017.

, Aerospace Communications: History, Trends and Future, The research interests of Dr. Sacchi are mainly focused on mobile and satellite communication systems, multiple access systems and software-defined radios, 2011.

, He is currently an Assistant Professor with the Information Engineering Department of the University of Florence. He is an author of more than 100 papers in international journals and conference proceedings. His current research interests focus on wireless communications systems, Simone Morosi received the Ph.D. degree in information and telecommunication engineering from the University of Florence in 2000