Faster-than-Nyquist (FTN) signaling is an attractive transmission technique which accelerates data symbols beyond the Nyquist rate to improve the spectral efficiency; however, at the expense of higher computational complexity to remove the introduced intersymbol interference (ISI). In this work, we introduce a novel FTN signaling transmission technique, named coordinate interleaved FTN (CI-FTN) signaling that exploits the ISI at the transmitter to generate constructive interference for every pair of the counter-clockwise rotated binary phase shift keying (BPSK) data symbols. In particular, the proposed CI- FTN signaling interleaves the in-phase (I) and the quadrature (Q) components of the counter-clockwise rotated BPSK symbols to guarantee that every pair of consecutive symbols has the same sign, and hence, has constructive ISI. At the receiver, we propose a low-complexity detector that makes use of the constructive ISI introduced at the transmitter. Simulation results show the merits of the CI-FTN signaling and the proposed low-complexity detector compared to conventional Nyquist and FTN signaling.

翻译：更快比Nyquist(FTN)信号是一种有吸引力的传输技术,它加速了Nyquist率以外的数据符号,以提高光谱效率;然而,以更高的计算复杂性为代价,消除引入的符号间干扰(ISI)。 在这项工作中,我们引入了一种新型FTN信号传输技术,名为“相互协调”FTN(CI-FTN)信号,在发报器上使用三离子仪,对反时转双相转换键(BPSK)数据符号的每一对产生建设性干扰。特别是,拟议的CI-FTN信号和反时旋转BPSK符号的二次信号(Q),以保障每对连续符号都有相同的符号,因此也具有建设性的一离子。在接收器上,我们建议使用低相容探测器,在发报器上采用建设性的双向双向双向双向双向双向双向双向双向双向双向双向移动键探测器。我们提议使用低相兼容性探测器。模拟结果显示CI-FSTN和FTNQ的信号的优点。