A Novel Synchronization Method in Terahertz Large‐Scale Antenna Array System

We focus on the problems of accurate time delay estimation, design training pilots, and hybrid matrix optimization within large-scale antenna array Terahertz (THz) broadband communication system. In contrast to existing researches based narrow-band arrays, we hereby shed light estimation arrays. THz systems, data symbol duration is relatively short when comparing with dimension array. signals received in each are no longer different phase-shifted copies same symbol, but completely symbols which occasion traditional structure suitable. Based above conclusion, firstly, put forward a system model arrays Time line (TDL) structure. Secondly, deduce Cramer-Rao lower bound (CRLB) present algorithm that could reach CRLB. Thirdly, by minimizing CRLB, address pilot optimized TDL under condition constant envelope modulus Finally, disclose numerical simulation results. According results, aforementioned method workable reaching can significantly surpass model, optimal outperforms pseudo-random