Data transmission on multiple access channel

Centre National d'Etudes Spatiales CNES - 10/18/2016


Musca is a communication protocol for Internet by Satellite. It improves the transmission of data during initialization / signaling phase on multiple access channel by ghting against multiple packet collisions. It provides 2 times better results than existing mechanisms, even at very low signal / noise ratio (SNRs).


Economic - Time saving in the initialization of the transmission. - Improving current solutions. Simplicity - Program available - software model.


Improvements to existing signaling techniques - Protection against errors and package collisions. - Increases stability and transmission capacity of a communication channel (Slotted ALOHA). - Using an error correction code (Turbocode, LDPC). Simple & effective - Faster sending and decoding despite collisions. - Adaptive coding rate to the charge of the channel. - Maximum capacity in the channel. - Very robust to SNRs. - Channel’s capacity higher than conventional methods (RCL CRDSA 2, IRSA). - Higher performance to the classical sloted ALOHA when signal / noise ratio is positive (from 0.36 to 0,85 / 0.89).

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