Abstract: An efficient coding and modulation system for transmission of digital data over plastic optical fibers with low latency. In particular, the digital signal is coded by means of a two-level coset coding. The first level applies to the digital data a binary shortened BCH coding and performs coset partitioning by means of constellation mapping and lattice transformations. The second level is uncoded but undergoes mapping and lattice transformation. After an addition of the two levels, a second-stage lattice transformation is performed so as to obtain a zero-mean constellation. The symbols output from such three-level coset coder are then further modulated.
Type:
Grant
Filed:
January 13, 2016
Date of Patent:
June 19, 2018
Assignee:
Knowledge Development for POF, S.L.
Inventors:
Ruben Perez De Aranda Alonso, David Ortiz, Dunia Prieto
Abstract: The present invention relates to transmission and reception of data over a plastic optical fiber. In particular, the present invention provides for transmission and reception over the plastic optical fiber a particularly suitable frame structure. The frame structure includes a synchronization sequence and portions of user data alternating with alternating reference signal portions and control data portions. The length of the user data portions may be equal, the length of the synchronization sequence and the control data and reference signal portions may also be equal. The distances between the synchronization sequence and the reference signal portions and the control data portions are advantageously equal. The alternating of data and additional information avoids data decoding latency while maintaining the rate necessary for the additional information.
Type:
Grant
Filed:
April 4, 2013
Date of Patent:
July 28, 2015
Assignee:
Knowledge Development For POF, S.L.
Inventors:
Rúben Pérez De Aranda Alonso, Pedro Reviriego Vasallo, Dunia Prieto Francia, David Ortiz Rojo
Abstract: An efficient coding and modulation system for transmission of digital data over plastic optical fibers is disclosed. The digital signal is coded by a three-level coset coding. The spectral efficiency of the system is configurable by selecting the number of bits to be processed in each of the levels. The first level applies to the digital data a binary BCH coding and performs coset partitioning by constellation mapping and lattice transformations. Similarly, second level applies another binary BCH coding, which may be performed selectably in accordance with the desired configuration by two BCH codes with substantially the same coding rate, operating on codewords of different sizes. The third level is uncoded. The second and third levels undergo mapping and lattice transformation. After an addition of the levels, a second-stage lattice transformation is performed to obtain a zero-mean constellation. The symbols output from such three-level coset coder are then further modulated.
Type:
Grant
Filed:
March 2, 2012
Date of Patent:
January 21, 2014
Assignee:
Knowledge Development for POF, S.L.
Inventors:
Carlos Pardo Vidal, Rúben Pérez de Aranda Alonso
Abstract: The present invention relates to transmission and reception of data over a plastic optical fibre. In particular, the present invention provides for transmission and reception over the plastic optical fibre a particularly suitable frame structure. The frame structure includes a synchronization sequence and portions of user data alternating with alternating reference signal portions and control data portions. The length of the user data portions may be equal, the length of the synchronization sequence and the control data and reference signal portions may also be equal. The distances between the synchronization sequence and the reference signal portions and the control data portions are advantageously equal. The alternating of data and additional information avoids data decoding latency while maintaining the rate necessary for the additional information.
Type:
Application
Filed:
April 4, 2013
Publication date:
December 12, 2013
Applicant:
Knowledge Development for POF, S.L.
Inventors:
Rúben Pérez De Aranda Alonso, Pedro Reviriego Vasallo, Dunia Prieto Francia, David Ortiz Rojo
Abstract: An efficient coding and modulation system for transmission of digital data over plastic optical fibres is disclosed. The digital signal is coded by a three-level coset coding. The spectral efficiency of the system is configurable by selecting the number of bits to be processed in each of the levels. The first level applies to the digital data a binary BCH coding and performs coset partitioning by constellation mapping and lattice transformations. Similarly, second level applies another binary BCH coding, which may be performed selectably in accordance with the desired configuration by two BCH codes with substantially the same coding rate, operating on codewords of different sizes. The third level is uncoded. The second and third levels undergo mapping and lattice transformation. After an addition of the levels, a second-stage lattice transformation is performed to obtain a zero-mean constellation. The symbols output from such three-level coset coder are then further modulated.
Type:
Application
Filed:
March 2, 2012
Publication date:
October 4, 2012
Applicant:
Knowledge Development for POF, S.L.
Inventors:
Carlos Pardo Vidal, Rúben Pérez de Aranda Alonso