Doppler estimation and data detection for underwater acoustic ZF-OFDM receiver

摘要: A new scheme for Doppler estimation and data detection OFDM underwater acoustic communications is derived in this paper. We design the symbol as a concatenation of two sub-blocks. The first one shorter carries out few with subcarriers whereas second contains both informative pilot symbols. sub-block serves to estimate scaling factor while pilots are used estimating equivalent channel. Both approaches based on high resolution methods solving harmonic retrieval problems time frequency domains respectively. Each cyclic suffix, which allows having more be processed. effectiveness proposed evaluated by means simulation results.