Unequal Error Protection in Coded Slotted ALOHA
Artikel i vetenskaplig tidskrift, 2016

We analyze the performance of coded slotted ALOHA systems for a scenario where users have different error protection requirements and correspondingly can be divided into user classes. The main goal is to design the system so that the requirements for each class are satisfied. To that end, we derive analytical error floor approximations of the packet loss rate for each class in the finite frame length regime, as well as the density evolution in the asymptotic case. Based on this analysis, we propose a heuristic approach for the optimization of the degree distributions to provide the required unequal error protection. In addition, we analyze the decoding delay for users in different classes and show that better protected users experience a smaller average decoding delay.

Coded slotted ALOHA

Electronic Telecommunications

decoding delay

Computer Science

RANDOM-ACCESS

error floor

Electrical &

unequal error protection

Information Systems

Engineering

Författare

Mikhail Ivanov

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Fredrik Brännström

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Alexandre Graell i Amat

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

G. Liva

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

IEEE Wireless Communications Letters

2162-2337 (ISSN)

Vol. 5 5 536-539

Komprimerad avkänning med hjälp av kodningsteori

Vetenskapsrådet (VR), 2012-01-01 -- 2015-12-31.

Coopnet

Europeiska kommissionen (FP7), 2011-05-01 -- 2016-04-30.

Ämneskategorier

Telekommunikation

Kommunikationssystem

Reglerteknik

DOI

10.1109/lwc.2016.2600322

Mer information

Senast uppdaterat

2018-05-29