Abstract: An LDPC (Low-Density Parity Check) code based on a control matrix represented by a Tanner bipartite graph includes 128 variable nodes of the graph and 64 constraint nodes of the graph, the code being wherein each of the constraint nodes of the graph is connected to 7 variable nodes of the graph; each of the cycles of the graph has a length greater than or equal to 6; the minimum distance of the code is equal to or greater than a predefined threshold for minimum distance.

Abstract: A method for receiving data frames which consists of determining a reference frame by firm decisions on the value of each bit received and then verifying the reference frame according to an integrity check code used for the transmission. The method may include the following steps: calculating, for each bit of said reference frame, a plausibility value that represents the probability of a transmission error; and, in the event of incompatibility with said integrity check code, identifying in said reference frame a non-empty finite set of the most plausibly erroneous bits in accordance with said plausibility values; listing candidate frames each corresponding respectively to one of the possible combinations of numbers of reversals of the identified most plausibly erroneous bits; and verifying the compatibility of the listed candidate frames with said integrity check code.

Abstract: The invention relates to a method for controlling digital data transmission in a remote-reading apparatus including a plurality of metering devices, each equipped with a radiofrequency module for communicating with a radiofrequency transmission/reception device of a gateway system of the apparatus, the method comprising a step of transmitting a digital signal from the radiofrequency module to the radiofrequency transmission/reception device and/or from the radiofrequency transmission/reception device to the radiofrequency module, the transmission being carried out via a carrier modulated by frequency shift modulation, the method being characterized in that the frequency shift modulation has a modulation index strictly equal to an integer value divided by two, and in that it includes a step of receiving the signal transmitted according to the modulation, comprising operations of generation of a synchronization signal synchronized with the received signal and synchronous detection of the received signal using t

Abstract: A method of managing a software update of a plurality of remote-reading terminals to be updated in a remote-reading installation comprising a plurality of access points and a management server is disclosed, The method may include steps of transmitting a message for planning reception of the update data to said plurality of remote-reading terminals to be updated, selecting a set of access points from among said plurality of access points in such a way as to limit the number of access points used to disseminate said update data, and sending said update data through said selected set of access points.

Abstract: The invention relates to a method for receiving data frames which consists of determining a reference frame by firm decisions on the value of each bit received and then verifying the reference frame according to an integrity check code used for the transmission. The invention includes the following steps: calculating, for each bit of said reference frame, a plausibility value that represents the probability of a transmission error; and, in the event of incompatibility with said integrity check code, identifying in said reference frame a non-empty finite set of the most plausibly erroneous bits in accordance with said plausibility values; listing candidate frames each corresponding respectively to one of the possible combinations of numbers of reversals of the identified most plausibly erroneous bits; and verifying the compatibility of the listed candidate frames with said integrity check code.

Abstract: The invention relates to a method for controlling digital data transmission in a remote-reading apparatus comprising a plurality of metering devices, each equipped with a radiofrequency module for communicating with a radiofrequency transmission/reception device of a gateway system of said apparatus, said method comprising a step of transmitting a digital signal from said radiofrequency module to said radiofrequency transmission/reception device and/or from said radiofrequency transmission/reception device to said radiofrequency module, said transmission being carried out via a carrier modulated by frequency shift modulation, said method being characterized in lo that said frequency shift modulation has a modulation index strictly equal to an integer value divided by two, and in that it comprises a step of receiving the signal transmitted according to said modulation, comprising operations of generation of a synchronization signal synchronized with the received signal and synchronous detection of the received

Abstract: A method of managing a software update of a plurality of remote-reading terminals to be updated in a remote-reading installation comprising a plurality of access points and a management server is disclosed, The method may include steps of transmitting a message for planning reception of the update data to said plurality of remote-reading terminals to be updated, selecting a set of access points from among said plurality of access points in such a way as to limit the number of access points used to disseminate said update data, and sending said update data through said selected set of access points.