Abstract: A method for transmitting data stream packets within a wireless communication network, includes the following steps: at at least one node: computing, from the signatures Si of the streams Fi to which the node has subscribed and for each of these streams Fi, reserved resources RBres wherein there is no collision, and resources RBcomp potentially in competition, wherein collisions are possible, checking whether the current resource RB is reserved or whether it is in competition, if the current resource RBres is reserved, if the node is the packet transmission source or if the node has already correctly decoded the packet, transmitting the packet of the stream associated with the resource, if not, attempting to decode the packet of the stream and, if the decoding is correct, storing the decoded packet in memory, if the current resource RBcomp is in competition, applying a method for managing stream collisions on the resources where n>1.

Abstract: This method, executed in a group of nodes of the ad hoc network (1) including a source (10), first and second relays (11, 12) and an addressee (13), the relays being neighbors of the source, the addressee being a neighbor of the relays, the source having useful data to be retransmitted towards a final addressee (15) through a routing path passing through the first relay (11), and then the addressee (13), consist of: computing a first characteristic quantity of an elementary path between the source (10) and the addressee (13), via the first relay (11) and a second characteristic quantity of an elementary path between the source (10) and the addressee (13), via the second relay (11); verifying the observance of a criterion for the first characteristic quantity; and, in case of negative verification, using the second relay (12) for relaying the useful data from the source (10), towards the addressee (13).

Abstract: This node, applying an information broadcasting service of the flooding type, includes a controller for accessing the radio resource able to perform dynamic containment for accessing the radio resource. It is characterized in that it includes a network coder allowing generation of the data packets so that each packet includes, in the payload portion, a message (M) resulting from the combination of a plurality of pieces of information (Info_idi) to be broadcast, and in the header portion, a list (L) of the identifiers (Idk) of the pieces of information combined in the message.

Abstract: This method, executed in a group of nodes of the ad hoc network (1) including a source (10), first and second relays (11, 12) and an addressee (13), the relays being neighbors of the source, the addressee being a neighbor of the relays, the source having useful data to be retransmitted towards a final addressee (15) through a routing path passing through the first relay (11), and then the addressee (13), consist of: computing a first characteristic quantity of an elementary path between the source (10) and the addressee (13), via the first relay (11) and a second characteristic quantity of an elementary path between the source (10) and the addressee (13), via the second relay (11); verifying the observance of a criterion for the first characteristic quantity; and, in case of negative verification, using the second relay (12) for relaying the useful data from the source (10), towards the addressee (13).

Abstract: This node, applying an information broadcasting service of the flooding type, includes a controller for accessing the radio resource able to perform dynamic containment for accessing the radio resource. It is characterized in that it includes a network coder allowing generation of the data packets so that each packet includes, in the payload portion, a message (M) resulting from the combination of a plurality of pieces of information (Info_idi) to be broadcast, and in the header portion, a list (L) of the identifiers (Idk) of the pieces of information combined in the message.

Abstract: Method for ordering a number K of given users in a digital signal equalizing and decoding device receiving the signals from the K users comprising at least the following steps: a step in which the K users, or at least the majority of K users, are ordered according to a defined criterion for a user k taking account of the power of user k corrected for intersymbol interference associated with this user k and with other users, and an equalizing and decoding step. Use of the method in a CDMA context.

Abstract: Method and device for equalizing and decoding digital signals from K users including several modules. Each module includes an equalizer linked to a decoder. An equalizer of rank k corresponding to an index of user k is linked at least to the decoders of rank varying from 1 to k-1. Such a method and apparatus may find particular application for demodulating signals in mobile radio systems.

Abstract: The invention relates to a method of estimating a propagation channel, between a source transmitting data and a receiver, using at least one learning sequence which comprises symbols referred to as “pilot symbols” and which is known to the receiver, so as to decode a data signal (digital signal), the signals being sent in successive frames, each frame being partitioned into a specified number of time slots. It comprises at least the following steps: a) choosing a search window, estimating the complex amplitude and the energy of each predominant path k situated in the search window over the duration of each of the time slots and demodulating the data bits (useful bits), b) updating the energy of each possible path of the search window every K slots, c) selecting every K*L slots, the energy paths k which are predominant. d) Application to the demodulation of a signal of CDMA type, or of UMTS type.

Abstract: Method and device for estimating a propagation channel The invention relates to a method of estimating a propagation channel, between a source transmitting data and a receiver, using at least one learning sequence which comprises symbols referred to as “pilot symbols” and which is known to the receiver, so as to decode a data signal (digital signal), the signals being sent in successive frames, each frame being partitioned into a specified number of time slots.

Abstract: Method for ordering a number K of given users in a digital signal equalizing and decoding device receiving the signals from the K users comprising at least the following steps:

Abstract: Method and device for equalizing and decoding digital signals from K users comprising several modules, each module comprising an equalizer linked to a decoder. An equalizer of rank k corresponding to an index of user k is linked at least to the decoders of rank varying from 1 to k−1.

Abstract: A process for calculating on the one hand the coefficients of a spatial filter applied to the signals emanating from the third step and on the other hand the coefficients of a temporal filter applied to the replica signal, made up either of the known symbols for the learning sequences, or from the demodulated symbols for the information sequences, the coefficients of these two filters being calculated so as to minimize, under a specified constraint, a criterion of mean square error between the output signal from the spatial filter and the output signal from the temporal filter, and consisting in filtering the signals emanating from the third step with the aid of the thus calculated coefficients of the spatial filter, thus optimizing the gain of the array of sensors in the direction of the useful signal at the output of the spatial filtering and ensuring rejection of the interference.

Abstract: The method is of the type featuring a parallel transmission, over a predetermined number of transmission frequencies at a low bit rate, of useful information signals modulated at a predetermined phase shift keying. A parallel transmission on all the frequencies of the frames of useful signals and of frames of reference signals is performed, a frame of reference signals being inserted between two neighboring useful frames, and each reference signals being alternated with a useful signal in each frame of the reference signals. Such a method finds particular application to the digital transmission of speech.