Abstract: A method for recovering the symbol time by a receiver to decode a sequence of symbols transmitted by a transmitter when the symbol time of the transmitter is biased with respect to the symbol time of the receiver. When a transition is detected between two consecutive symbols, an absolute error on the instant of the current symbol is measured and a statistical model of the bias is updated. A correction may then be applied to the instants of the subsequent symbols depending on the measured absolute error and/or a bias estimated from the statistical model. During periods in which there are no transitions between symbols, an absolute error cannot be measured, but it is still possible to apply a correction to the instants of the subsequent symbols depending on a relative error extrapolated from the statistical model.

Abstract: A method for analyzing frequency resources within a predetermined multiplexing band. For at least one base station, capabilities for detecting uplink messages respectively in different frequency sub-bands within the multiplexing band are estimated. For each frequency sub-band, a predetermined service quality criterion is assessed depending on the detection capability estimated for the frequency sub-band. A spectral map of service quality for the base station is transmitted. The spectral map is representative of the frequency sub-bands for which the service quality criterion has been verified and the frequency sub-bands for which the service quality criterion has not been verified.

Abstract: A method for analyzing frequency resources within a predetermined multiplexing band. For at least one base station, capabilities for detecting uplink messages respectively in different frequency sub-bands within the multiplexing band are estimated. For each frequency sub-band, a predetermined service quality criterion is assessed depending on the detection capability estimated for the frequency sub-band. A spectral map of service quality for the base station is transmitted. The spectral map is representative of the frequency sub-bands for which the service quality criterion has been verified and the frequency sub-bands for which the service quality criterion has not been verified.