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Title: On the True Cramér-Rao Lower Bound for Data-Aided Carrier-Phase-Independent Frequency Offset and Symbol Timing Estimation
Authors: Tavares, Gonçalo
Tavares, Luis
Petrolino, Antonio
Keywords: Carrier-phase-independent estimation
Cramer-Rao lower bound
Symbol timing estimation
Data aided frequency estimation
Issue Date: Feb-2010
Citation: Estilo IEEE: [1] G. Tavares, L. Tavares, and A. Petrolino, "On the true Cramer-Rao lower bound for data-aided carrier-phase-independent frequency offset and symbol timing estimation," Communications, IEEE Transactions on, vol. 58, pp. 442-447, 2010.
Abstract: In this letter we present new and simple closed form expressions for the true Cramer-Rao lower bound (CRB) for data-aided (DA) joint and individual carrier frequency offset and symbol timing estimation from a linearly modulated waveform transmitted over an AWGN channel. The bounds are derived under a carrier-phase-independent (CPI) estimation strategy wherein the carrier phase is viewed as a nuisance parameter and assumed to have a worst-case noninformative uniform distribution over [-¿, ¿]. The computation of these CRBs requires only a single numerical integration. In addition, computationally simpler yet highly accurate asymptotic lower bounds are presented. As particularizations, new bounds for individual CPI frequency estimation with known symbol timing from M-PSK and continuous wave (CW) signals are also reported.
Peer reviewed: yes
Publisher version:
Appears in Collections:D-ENG - Artigos em revistas com peer review

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