Non-orthogonal/orthogonal data tranception means that the data is transmitted in non-orthogonal way but detected in orthogonal way. It is known that to send N orthogonal bandpass signals in T seconds, N/T Hertz bandwidth is required. Such a transmission scheme can be realized in practice on OFDM systems. If the orthogonality condition is relaxed, then this minimum bandwidth is not required and the bandwidth efficiency can be considerably improved, especially when low-order constellations are used. Faster-than-Nyquist signaling is an example of this paradigm. However, due to receiver...