Time-domain maximum-likelihood (ML) estimators of time and frequency offset
s are derived for three orthogonal frequency division multiplexing (OFDM) s
ignal models: a pulse-shaped one-shot OFDM signal, a stream of multiple OFD
M signals and an OFDM signal in a dispersive channel environment. We then d
evelop structures to simplify their implementation. Simulation results show
the relative performance and strengths of each of these three estimators.
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