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A hybrid network coding technique for single-hop wireless networks

TitleA hybrid network coding technique for single-hop wireless networks
Publication TypeJournal Article
Year of Publication2009
AuthorsTran, T., T. Nguyen, B. Bose, and V. Gopal
JournalIEEE Journal on Selected Areas in Communications
Volume27
Issue5
Pagination685 - 698
Date Published06/2009
ISSN0733-8716
Keywordschannel coding, network coding, wimax, wireless lan
Abstract

In this paper, we investigate a hybrid network coding technique to be used at a wireless base station (BS) or access point (AP) to increase the throughput efficiency of single-hop wireless networks. Traditionally, to provide reliability, lost packets from different flows (applications) are retransmitted separately, leading to inefficient use of wireless bandwidth. Using the proposed hybrid network coding approach, the BS encodes these lost packets, possibly from different flows together before broadcasting them to all wireless users. In this way, multiple wireless receivers can recover their lost packets simultaneously with a single transmission from the BS. Furthermore, simulations and theoretical analysis showed that when used in conjunction with an appropriate channel coding technique under typical channel conditions, this approach can increase the throughput efficiency up to 3.5 times over the Automatic Repeat reQuest (ARQ), and up to 1.5 times over the HARQ techniques.

DOI10.1109/JSAC.2009.090610
Short TitleIEEE J. Select. Areas Commun.