Detalhes bibliográficos
| Resumo: | 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. |
|---|
| Autores principais: | Tavares, Gonçalo |
|---|
| Outros Autores: | Tavares, Luis; Petrolino, Antonio |
|---|
| Assunto: | Carrier-phase-independent estimation Cramer-Rao lower bound Synchronization Symbol timing estimation Data aided frequency estimation |
|---|
| Ano: | 2010 |
|---|
| País: | Portugal |
|---|
| Tipo de documento: | artigo |
|---|
| Tipo de acesso: | acesso restrito |
|---|
| Instituição associada: | Instituto Politécnico de Beja |
|---|
| Idioma: | inglês |
|---|
| Origem: | Repositório Institucional do IPBeja |
|---|