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1. (WO2018104475) BLOCK CONSTELLATION SELECTION MODULATION FOR OVERLAID INFORMATION TRANSMISSION

Pub. No.:    WO/2018/104475    International Application No.:    PCT/EP2017/081885
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Fri Dec 08 00:59:59 CET 2017
IPC: H04B 10/516
Applicants: ALCATEL LUCENT
Inventors: ERIKSSON, Tobias
Title: BLOCK CONSTELLATION SELECTION MODULATION FOR OVERLAID INFORMATION TRANSMISSION
Abstract:
This application relates to an optical modulation method. The method comprises arranging a first data stream in a plurality of symbol blocks, selecting at least one block modulation scheme from a plurality of block modulation schemes for a symbol block based on a second data stream, generating a plurality of block data symbols for the symbol block based on the first data stream and the selected block modulation scheme,and modulating an optical signal using the generated block data symbols. The application also relates to an optical demodulation method that comprises receiving a plurality of block data symbols arranged in one or more symbol blocks, converting the plurality of block data symbols of symbol blocks and determining at least one applied modulation scheme for each of the symbol blocks. The optical demodulation method also comprises obtaining a second data stream based on the determined modulation schemes applied to the symbol blocks and obtaining a first data stream from the block data symbols of the symbol blocks.