Non-orthogonal waveform transmission technique with convolutional multiplexing signalling

A non-orthogonal waveform transmission (NOWT) technique with convolutional multiplexing signalling (CMS) is introduced and analyzed, which can improve the data rate and spectrum efficiency of the wireless communication system. By narrowing the time interval of pulse shaping filter and overlapping parallel data branches together, the technique can obtain preferable gains compared with Nyquist signalling in the band-limited Gaussian channel, as well as frequency selective fading channel. The technique decreases E_b/N₀ threshold distinctly compared with M-QAM technique, which can be used in the power efficient communications. It´s proved that Nyquist signaling is not the optimal transmission criterion, and capacity of NOWT technique outperforms that of Nyquist system.