Knowledge Development for POF, S.L. Patent applications |
Patent application number | Title | Published |
20130330082 | Frame Structure For Adaptive Data Communications Over A Plastic Optical Fibre - 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. | 12-12-2013 |
20120250785 | Adaptive Error Correcting Code for Data Communications Over a Plastic Optical Fibre - 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. | 10-04-2012 |