Error Floor Analysis of Coded Slotted ALOHA over Packet Erasure Channels
Journal article, 2015

We present a framework for the analysis of the error floor of coded slotted ALOHA (CSA) for finite frame lengths over the packet erasure channel. The error floor is caused by stopping sets in the corresponding bipartite graph, whose enumeration is, in general, not a trivial problem. We therefore identify the most dominant stopping sets for the distributions of practical interest. The derived analytical expressions allow us to accurately predict the error floor at low to moderate channel loads and characterize the unequal error protection inherent in CSA.

Coded slotted ALOHA

error floor

unequal error protection

packet erasure channel

stopping set

Author

Mikhail Ivanov

Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Fredrik Brännström

Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Alexandre Graell i Amat

Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Petar Popovski

Aalborg Universitet

IEEE Communications Letters

1089-7798 (ISSN)

Vol. 19 419-422 6994775

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

DOI

10.1109/LCOMM.2014.2385073