A high-throughput cross-layer scheme for distributed wireless ad hoc networks

Athina P. Petropulu, Lun Dong, H. Vincent Poor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Abstract

In wireless ad hoc networks, distributed nodes can collaboratively form an antenna array for long-distance communications to achieve high energy efficiency. In recent work, Ochiai, et al., have shown that such collaborative bearnforming can achieve a statistically nice beampattern with a narrow main lobe and low side lobes. However, the process of collaboration introduces significant delay, since all collaborating nodes need access to the same information. In this paper, a technique that significantly reduces the collaboration overhead is proposed. It consists of two phases. In the first phase, nodes transmit locally in a random access fashion. Collisions, when they occur, are viewed as linear mixtures of the collided packets. In the second phase, a set of cooperating nodes acts as a distributed antenna system and beamform the received analog waveform to one or more faraway destinations. This step requires multiplication of the received analog waveform by a complex number, which is independently computed by each cooperating node, and which enables separation of the collided packets based on their final destination. The scheme requires that each node has global knowledge of the network coordinates. The proposed scheme can achieve high throughput, which in certain cases exceeds one.

Original languageEnglish (US)
Title of host publicationForty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings
Pages878-883
Number of pages6
DOIs
StatePublished - Dec 1 2007
Event41st Annual Conference on Information Sciences and Systems, CISS 2007 - Baltimore, MD, United States
Duration: Mar 14 2007Mar 16 2007

Publication series

NameForty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings

Other

Other41st Annual Conference on Information Sciences and Systems, CISS 2007
CountryUnited States
CityBaltimore, MD
Period3/14/073/16/07

All Science Journal Classification (ASJC) codes

  • Computer Science(all)

Keywords

  • Bearnforming
  • Cooperation
  • Distributed wireless systems

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  • Cite this

    Petropulu, A. P., Dong, L., & Poor, H. V. (2007). A high-throughput cross-layer scheme for distributed wireless ad hoc networks. In Forty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings (pp. 878-883). [4298434] (Forty-first Annual Conference on Information Sciences and Systems, CISS 2007 - Proceedings). https://doi.org/10.1109/CISS.2007.4298434