Mitsubishi Electric Corporation

Mitsubishi Electric R&d Centre Europe B.v.

Cristina Ciochina-Duchesne

Loic Brunel

Fumihiro Hasegawa

Akinori Taira

Akihiro Okazaki

Loïc Brunel

The present invention relates to a method implemented by computer means of a communicating entity, for inserting a reference signal for phase tracking, said communicating entity using a discrete Fourier transformation spread orthogonal frequency division multiplexing modulator, characterized in that the method comprises: 

Reference signal for phase tracking insertion

The present invention concerns a method for determining a power of at least one crosspolar interferer in a frame received by a receiver comprising at least a first and a second receive antennas detecting a first and a second polarization, the frame being transmitted from a satellite transmitter comprising at least a first and a second transmit antennas, the first transmit antenna being used for transferring signal representative of the frames to the receiver on the first polarization, the second transmit antenna being used for transferring signal to another receiver using the same frequency and the second polarization. The method comprises the steps of: &#x2014;obtaining the antenna gains between the satellite transmitter and the receiver, &#x2014;estimating a value of the atmospheric attenuation between the satellite transmitter and the receiver, a crosspolar attenuation, the channels between the first and second transmit antennas and the receiver, &#x2014;estimating the power of the at least one interferer from the obtained antennas gains and estimations.

Method and device for determining power of at least one crosspolar interferer in frame

The present invention concerns a method for determining if at least one interferer generated by cross polarization interference is present in a received frame. The method comprises the steps of: &#x2014;analyzing the received frame using a sliding window which analyzes at least a part of a first and second planes of the received frame, &#x2014;determining a factor of merit for each position of the sliding window, &#x2014;comparing each factor of merit to a threshold in order to determine if at least one interfered zone is present in the received frame, &#x2014;analyzing the factors of merit in order to determine the number of interferers which are present in each interfered zone, &#x2014;determining the start/end positions of each interferer in the first and second planes of the received frame.

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Rennes, France

Cristina Ciochina-Duchesne