公开(公告)号：US10382116B2

公开(公告)日：2019-08-13

申请号：US16072694

申请日：2017-01-27

Applicant: Zodiac Data Systems ,  CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Nicolas Pasternak ,  Alain Thomas ,  Clément Dudal ,  Mathieu Llauro ,  Jean-Pierre Millerioux

IPC: H04L5/12 ,  H04B7/10 ,  H04B7/00 ,  H04B17/336 ,  H04B7/04

Abstract: The invention relates to a radio communication receiver receiving a radio signal (S) including a main polarisation (MAIN-POL) and a secondary polarisation (X-POL) orthogonal to the main polarisation (MAIN-POL), the receiver including: a unit (1) for receiving the main polarisation (MAIN-POL) and the secondary polarisation of the received signal, synchronised as a carrier frequency with the main polarisation (MAIN-POL); a unit (2) for cancelling out the secondary polarisation synchronised with the main polarisation (MAIN-POL) and configured to suppress, from the received signal (S), the interference due to the secondary polarisation (X-POL), the unit (2) for cancelling out the secondary polarisation including a filtering unit (21) that receives the main polarisation (MAIN-POL) and the secondary polarisation (X-POL) as input; a unit (3) for demodulating the filtered signal, located downstream of the cancellation unit and configured to calculate carrier frequency error information and to communicate same by feedback to the upstream receiving unit (1).

公开(公告)号：US11343127B2

公开(公告)日：2022-05-24

申请号：US17254696

申请日：2019-06-21

Applicant: SAFRAN DATA SYSTEMS ,  CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Alain Thomas ,  Jean-Marc Leveau ,  Stanislas Augarde ,  Emmanuel Bouisson ,  Adrien Gay

IPC: H04L27/233 ,  H04B1/00 ,  H04L7/06 ,  H04B1/30

Abstract: Method for processing a sequence of digital signal samples including a first sub-sequence and a second sub-sequence. Forming a first block of samples comprising the first sub-sequence and a second block of samples comprising header samples followed by the second sub-sequence. Demodulating the first block of samples through a digital demodulator to produce a first block of symbols, and the second block of digital signal samples through a second digital demodulator to produce a second block of symbols. The second demodulator implementing a carrier synchronisation or symbol rate synchronisation starting with the header samples, which comprise samples in a number adapted in such a way that the synchronisation is effective before the second demodulator demodulates the second sub-sequence. Reconstructing a sequence of symbols by concatenating the first symbol block with the second symbol block.