Abstract: A method for allocating, by a telecommunication device, at least first and second channel elements of a group of channel elements of a channel resource to a destination. The telecommunication device: selects, for the first channel element, a first randomization function according to the position of the first channel element within the group of channel elements and according to the destination; selects, for the second channel element, a second randomization function according to the position of the second channel element within the group of channel elements and according to the destination; processes the data to be included in the first channel element by the first randomization function and processes the data to be included in the first channel element by the second randomization function; and transfers the processed data.

Abstract: A method for controlling operation of a first base station of a wireless cellular telecommunication network including plural base stations and a server. The first base station sets transmission power of signals transferred by the first base station at a first transmission power value, detects a predetermined signal transferred by a mobile terminal, and if a predetermined signal is detected: establishes a communication link with the server, obtains from the server information identifying each second base station that manages a cell that is neighbor of the cell managed by the first base station and that is transferring signals at a second transmission power higher than the first transmission power value, establishes a communication link with each second base station, and sets the transmission power of the signals transferred by the first base station at a second transmission power value higher than the first transmission power.

Abstract: An object is detected by generating a m-ary primary signal having an irregular sequence of states. Each transition results in the transmission of a pulse encoded according to the type of transition. Reflected pulses are processed with a delayed, reference version of the primary signal. The presence of an object at a range corresponding to the delay is determined from the extent to which the reflected pulses coincide with transitions in the reference signal. In one aspect, transitions between states of the primary signal occur at varying time offsets with respect to nominal regular clock pulses. In another aspect, the object-detection system is operated while inhibiting the transmission of pulses, and if a significant output is obtained, the parameters of the transmitted signal are altered.

Abstract: Candidate moments within a pulse train are selected. For each such moment, it is determined whether pulses occur at uniform intervals both before and after the moment; if so, the relevant pulses are classified as belonging to a particular group. An accurate calculation of interpulse interval is carried out by working out the repetition interval from the times of arrival of the pulses relative to the candidate moment, and then taking a weighted angular average.

Abstract: A method of representing an object appearing in a still or video image, by processing signals corresponding to the image, comprises deriving the peak values in CSS space for the object outline and applying a non-linear transformation to said peak values to arrive at a representation of the outline.

Abstract: The present invention concerns a method for terminals to have access to a common resource of a network. It is characterised in that the said network defines the access conditions of a plurality of access classes and transmits the said conditions to all the terminals liable to have access to the said resource and in that a terminal wishing to have access to the said resource determines the access class to which it belongs according to its access state and gains access to the said resource according to the access conditions of the said access class thus determined.

Abstract: A diversity switch combiner for use in systems for receiving multi-carrier wideband signals is arranged to determine, during a guard interval, which antenna provides the strongest carrier, for each of a plurality of carrier frequencies. A switch is then operated to select, for the subsequent symbol, that antenna which provides the greatest number of strongest carriers.

Abstract: A method for estimating a direction of arrival of a signal transmitted by a signal source and received by an antenna array. The method estimates the covariance matrix of the signals received by the antennas of the array and derives therefrom a direction of arrival. The received signals are correlated with a reference signal transmitted by the source prior to being submitted to the covariance matrix estimation.

Abstract: A telecommunication system for mobiles of the type which has a network of base stations to which the mobiles can be connected and which is designed so that a mobile connected to a base station sends to the base station, besides user signals, power control commands in order that the base station controls its own transmission power so that the power received therefrom by the mobile is equal to a predetermined value. Each base station to which the mobile is connected regularly transmits, to the base stations to which the mobile is liable to be connected during a handover phase, the mean value of its transmission power. A base station, at the moment of the start of the handover phase, deduces, from the mean value and from the power control commands it receives from the mobile, the instantaneous value of the power emitted by the initial base station or stations at this moment and initializes its transmission power to a value derived from the instantaneous power.