Skip to content

Advertisement

  • Research Article
  • Open Access

Enhancing the Performance of Random Access Networks with Random Packet CDMA and Joint Detection

  • 1Email author,
  • 2 and
  • 2
EURASIP Journal on Advances in Signal Processing20082009:238103

https://doi.org/10.1155/2009/238103

Received: 17 January 2008

Accepted: 29 July 2008

Published: 5 August 2008

Abstract

Random packet CDMA (RP-CDMA) is a recently proposed random transmission scheme which has been designed from the beginning as a cross-layer method to overcome the restrictive nature of the Aloha protocol. Herein, we more precisely model its performance and investigate throughput and network stability. In contrast to previous works, we adopt the spread Aloha model for header transmission, and the performance of different joint detection methods for the payload data is investigated. Furthermore, we introduce performance measures for multiple access systems based on the diagonal elements of a modified multipacket reception matrix, and show that our measures describe the upper limit of the vector of stable arrival rates for a finite number of users. Finally, we simulate queue sizes and throughput characteristics of RP-CDMA with various receiver structures and compare them to spread Aloha.

Keywords

  • Arrival Rate
  • Access Network
  • Transmission Scheme
  • Access System
  • Queue Size

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

(1)
Military Air Systems, EADS Deutschland GmbH, Friedrichshafen, Germany
(2)
Department of Electrical and Computer Engineering, University of Utah, USA

Copyright

© Roland Kempter et al. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Advertisement