Robust MAC-Lite and soft header recovery for packetized multimedia transmission

Cedric Marin (1) , Yann Leprovost (2) , Michel Kieffer (1) , Pierre Duhamel (1)

1 L2S - Laboratoire des signaux et systèmes
2 ALBL FR - Alcatel-Lucent Bell Labs France

This paper presents an enhanced permeable layer mechanism useful for highly robust packetized multimedia transmission. Packet header recovery at various protocol layers using MAP estimation is the cornerstone of the proposed solution. The inherently available intra-layer and inter-layer header correlation proves to be very effective in selecting a reduced set of possible header configurations for further processing. The best candidate is then obtained through soft decoding of CRC protected data and CRC redundancy information itself. Simulation results for WiFi transmission using DBPSK modulated signals over AWGN channels show a substantial (4 to 12 dB) link budget improvement over classical hard decision procedures. We also introduce a sub-optimal and hardware realizable version of the proposed algorithm.

Domaines: Traitement du signal et de l'image [eess.SP]; Réseaux et télécommunications [cs.NI]; Traitement du signal et de l'image [eess.SP]

Cedric Marin, Yann Leprovost, Michel Kieffer, Pierre Duhamel. Robust MAC-Lite and soft header recovery for packetized multimedia transmission. IEEE Transactions on Communications, 2010, 58 (3), pp.775-784. ⟨hal-00549101⟩