Systematic raptor codes for safety broadcast in an unsaturated vehicular highway environment

Nor Fadzilah Abdullah, Robert J. Piechocki, Angela Doufexi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Active safety broadcast is one of the most fundamental services in intelligent transportation systems. The repetition code proposed in wireless access for vehicular environment (WAVE) standard is inefficient in realistic channel conditions and rapidly changing network topologies. In this study, we propose the use of systematic raptor codes as a forward error correction (FEC) scheme at the MAC layer. This code is optimised for short packet lengths, as are expected in safety applications. We have developed a multi-layered simulator that consists of realistic IEEE 802.11p physical layer results, an analytical random access MAC model and FEC codes implemented at different OSI layers. The model considers safety messages under non-saturated channel conditions according to the vehicular IEEE 802.11p standard. Issues such as the hidden nodes problem, interference and vehicles leaving the communication area are considered. The performance evaluation of raptor codes against repetition codes in the shared control channel with different antenna schemes is also presented.

Original languageEnglish
JournalEurasip Journal on Wireless Communications and Networking
Volume1
DOIs
Publication statusPublished - 2012

Fingerprint

Forward error correction
Simulators
Topology
Antennas
Communication

Keywords

  • Automotive networks
  • Fountain code
  • IEEE 802.11p
  • MIMO-STBC
  • Safety broadcast
  • VANETs

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing
  • Computer Science Applications

Cite this

Systematic raptor codes for safety broadcast in an unsaturated vehicular highway environment. / Abdullah, Nor Fadzilah; Piechocki, Robert J.; Doufexi, Angela.

In: Eurasip Journal on Wireless Communications and Networking, Vol. 1, 2012.

Research output: Contribution to journalArticle

@article{2a2094cddc96459287b62b3949ad7148,
title = "Systematic raptor codes for safety broadcast in an unsaturated vehicular highway environment",
abstract = "Active safety broadcast is one of the most fundamental services in intelligent transportation systems. The repetition code proposed in wireless access for vehicular environment (WAVE) standard is inefficient in realistic channel conditions and rapidly changing network topologies. In this study, we propose the use of systematic raptor codes as a forward error correction (FEC) scheme at the MAC layer. This code is optimised for short packet lengths, as are expected in safety applications. We have developed a multi-layered simulator that consists of realistic IEEE 802.11p physical layer results, an analytical random access MAC model and FEC codes implemented at different OSI layers. The model considers safety messages under non-saturated channel conditions according to the vehicular IEEE 802.11p standard. Issues such as the hidden nodes problem, interference and vehicles leaving the communication area are considered. The performance evaluation of raptor codes against repetition codes in the shared control channel with different antenna schemes is also presented.",
keywords = "Automotive networks, Fountain code, IEEE 802.11p, MIMO-STBC, Safety broadcast, VANETs",
author = "Abdullah, {Nor Fadzilah} and Piechocki, {Robert J.} and Angela Doufexi",
year = "2012",
doi = "10.1186/1687-1499-2012-213",
language = "English",
volume = "1",
journal = "Eurasip Journal on Wireless Communications and Networking",
issn = "1687-1472",
publisher = "Springer Publishing Company",

}

TY - JOUR

T1 - Systematic raptor codes for safety broadcast in an unsaturated vehicular highway environment

AU - Abdullah, Nor Fadzilah

AU - Piechocki, Robert J.

AU - Doufexi, Angela

PY - 2012

Y1 - 2012

N2 - Active safety broadcast is one of the most fundamental services in intelligent transportation systems. The repetition code proposed in wireless access for vehicular environment (WAVE) standard is inefficient in realistic channel conditions and rapidly changing network topologies. In this study, we propose the use of systematic raptor codes as a forward error correction (FEC) scheme at the MAC layer. This code is optimised for short packet lengths, as are expected in safety applications. We have developed a multi-layered simulator that consists of realistic IEEE 802.11p physical layer results, an analytical random access MAC model and FEC codes implemented at different OSI layers. The model considers safety messages under non-saturated channel conditions according to the vehicular IEEE 802.11p standard. Issues such as the hidden nodes problem, interference and vehicles leaving the communication area are considered. The performance evaluation of raptor codes against repetition codes in the shared control channel with different antenna schemes is also presented.

AB - Active safety broadcast is one of the most fundamental services in intelligent transportation systems. The repetition code proposed in wireless access for vehicular environment (WAVE) standard is inefficient in realistic channel conditions and rapidly changing network topologies. In this study, we propose the use of systematic raptor codes as a forward error correction (FEC) scheme at the MAC layer. This code is optimised for short packet lengths, as are expected in safety applications. We have developed a multi-layered simulator that consists of realistic IEEE 802.11p physical layer results, an analytical random access MAC model and FEC codes implemented at different OSI layers. The model considers safety messages under non-saturated channel conditions according to the vehicular IEEE 802.11p standard. Issues such as the hidden nodes problem, interference and vehicles leaving the communication area are considered. The performance evaluation of raptor codes against repetition codes in the shared control channel with different antenna schemes is also presented.

KW - Automotive networks

KW - Fountain code

KW - IEEE 802.11p

KW - MIMO-STBC

KW - Safety broadcast

KW - VANETs

UR - http://www.scopus.com/inward/record.url?scp=84923354551&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84923354551&partnerID=8YFLogxK

U2 - 10.1186/1687-1499-2012-213

DO - 10.1186/1687-1499-2012-213

M3 - Article

AN - SCOPUS:84923354551

VL - 1

JO - Eurasip Journal on Wireless Communications and Networking

JF - Eurasip Journal on Wireless Communications and Networking

SN - 1687-1472

ER -