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NDA waveform estimation in the low-SNR regime
López Salcedo, José Antonio; Vázquez Grau, Gregorio
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
This correspondence addresses the problem of nondata-aidedwaveform estimation for digital communications. Based on the unconditionalmaximum likelihood criterion, the main contribution of this correspondenceis the derivation of a closed-form solution to the waveform estimationproblem in the low signal-to-noise ratio regime. The proposed estimationmethod is based on the second-order statistics of the received signaland a clear link is established between maximum likelihood estimation andcorrelation matching techniques. Compression with the signal-subspace isalso proposed to improve the robustness against the noise and to mitigatethe impact of abnormals or outliers.
Peer reviewed
2012-05-10
Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Processament del senyal
Signal processing
Digital communication
Data compression (Telecommunication)
Correlation matching techniques
Correlation methods
Data compression
Digital communication
Maximum likelihood estimation
Nondata-aided waveform estimation
Second-order statistics
Low signal-to-noise ratio regime
Signal-subspace compression
Unconditional maximum likelihood criterion
Processament del senyal
Codificació del senyal
Compressió de dades (Telecomunicació)
Consulteu les condicions d'ús d'aquest document en el repositori original:http://hdl.handle.net/2117/1601
Article
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERING INC
         

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