A novel LOFDM signal and its optimization over doubly-dispersion channels

As for the ISI/ICI resistances over the mobile wireless channels, the lattice-based OFDM approach (LOFDM) outperforms the traditional OFDM distinctly. However, due to its complicated signal description, few theoretic analyzes on its performances are available yet. In this paper, a novel lattice description is presented, which lays a more general framework than the previous matrix-based description but with less complexity. Then for the band-limited applications, the optimal LOFDM structure is, first to our knowledge, to be deduced. Our theoretic analysis is confirmed by numerical results.