Pierrick Louin

Bruno Jahan

Marc Lanoiselee

Pierre Urcun

A method is provided for estimating a propagation channel composed of successive symbols of a multicarrier signal, each comprising at least one reference pilot and a plurality of data-carrying frequencies. Such a method comprises, in particular, at least one step consisting of correcting the at least one reference pilot on the basis of a first estimation of a propagation channel, in order to provide a second, more precise estimation of the channel.

Method and device for estimating a multicarrier signal propagation channel

A method is provided for receiving a multicarrier signal including a time-based succession of symbols, each including a plurality of multicarriers bearing data, at least one of said symbols including at least one reference pilot. The method includes the following steps: a first estimation of a propagation channel, in accordance with a first estimating technique taking into account the or said reference pilots; at least one second estimation of said propagation channel, in accordance with a second estimating technique different from said first technique; comparing said first and second estimations, delivering an error signal; detecting at least one interfering signal in said propagation channel, by analyzing said error signal.

Method for receiving a multicarrier signal using at least two estimates of a propagation channel and corresponding reception device

The disclosure relates to a radio broadcasting method for a first multicarrier digital signal occupying a first frequency band adjacent to at least one second frequency band, each assigned to a second signal. Pre-filtering is applied to the said first signal before its emission so as to attenuate the power of the said first signal in at least a first portion of the said first frequency band, adjacent to the said second frequency band(s).

Radio broadcasting method and transmitter using pre-filtering and corresponding signal

A method for receiving a signal modulated according to a multilevel coding technique, comprising at least two coding levels each having different noise robustness, said signal including a plurality of symbols each comprising at least one bit, assigned to one of said coding levels, said method comprising at least one decoding iteration including successive steps of decoding each of said received bits, at least one of said decoding steps integrated the result of at least one possible previous decoding step. The invention is characterized in that it consists in decoding said bits according to a predetermined sequence taking into account the robustness of said levels, the bit(s) assigned to the decoding level having the higher noise robustness, called most robust level, being decoded first.

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Rennes, France

Pierrick Louin