Eigendecomposition-Precoded Faster-Than-Nyquist Signaling With Optimal Power Allocation in Frequency-Selective Fading Channels

In this paper, we propose eigenvalue decomposition (EVD)-precoded faster-than-Nyquist (FTN) signaling with power allocation in a frequency-selective fading channel. More specifically, derive the mutual information associated proposed FTN signaling. Then, optimal coefficients are calculated such that derived is maximized. Our analytical performance results show scheme achieves higher rate than conventional without relying on and classic Nyquist scheme, under assumption all schemes employ root-raised cosine shaping filter. Moreover, scheme’s achievable presence of channel estimation errors. Furthermore, our numerical simulation for bit error ratio spectral density demonstrate outperforms incurring any bandwidth broadening.