Title :
Cramer-Rao Bounds for SNR Estimates in Multicarrier Transmissions
Author :
Bellili, Faouzi ; Stéphenne, Alex ; Affes, Sofiene
Author_Institution :
INRS-EMT, Montreal, QC
Abstract :
Considering orthogonal frequency division multiplexing (OFDM) transmissions, we derive analytical expressions for the Cramer-Rao bounds for the subcarrier signal-to-noise ratio (SNR) estimates. The channel coefficients of the different subcarriers are assumed to be constant over the observation interval and the received signal is assumed to be corrupted by additive white Gaussian noise (AWGN). We will show that exploiting the mutual information between the different tones improves the achievable performance of subcarrier SNR estimators.
Keywords :
AWGN channels; OFDM modulation; AWGN channel; Cramer-Rao bounds; OFDM; additive white Gaussian noise channel; multicarrier transmissions; orthogonal frequency division multiplexing system; AWGN; Additive white noise; Bit rate; Frequency estimation; Mutual information; OFDM modulation; Parameter estimation; Signal analysis; Signal to noise ratio; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-2517-4
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2009.5073477
