A new wireless network medium access protocol based on cooperation

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

In this paper, we propose a new media access protocol for wireless networks, that due to its ability to resolve collisions can achieve high throughput. We view the wireless network as a spatially distributed antenna with antenna elements linked via the wireless channel. When there is a collision, the collided packets are saved in a buffer. In the slots following the collision, a set of nodes designated as nonregenerative relays retransmit the signal that they received during the collision slot By processing the originally collided packets and the signals forwarded by the relays, the destination node can recover the original packets. The proposed scheme maintains the benefits of ALOHA systems, i.e., needs no scheduling overhead and is suitable for bursty sources, such as multimedia sources. It also offers the benefits of multi-antenna systems, i.e., spatial diversity while employing a single transmit/receive antenna at each node. Spatial diversity enables it to be robust to the wireless channel. The proposed approach achieves higher throughput and energy savings than existing techniques that allow for multiple packet reception.

Original languageEnglish (US)
Pages (from-to)4675-4684
Number of pages10
JournalIEEE Transactions on Signal Processing
Volume53
Issue number12
DOIs
StatePublished - Dec 1 2005
Externally publishedYes

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Wireless networks
Antennas
Network protocols
Throughput
Energy conservation
Scheduling
Processing

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

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A new wireless network medium access protocol based on cooperation. / Lin, Rui; Petropulu, Athina.

In: IEEE Transactions on Signal Processing, Vol. 53, No. 12, 01.12.2005, p. 4675-4684.

Research output: Contribution to journalArticle

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