On multiple access and capacity in frequency-selective channels

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

3 Scopus citations

Abstract

Investigates the problem of improving communication rates for frequency-selective multi-access channels (MACs). In this context, multi-pulse methods offer a new opportunity to revisit MAC approaches that are aware of and exploit channel characteristics. For the single-link case, multi-pulse methods such as OFDM split the channel into a set of orthogonal subchannels, or dimensions, and enable the use of Shannon's water-filling technique to achieve capacity. This paper proposes MAC approaches based on water-filling for high-speed ad-hoc wireless networks. The basic framework divides time into uniform slots; during each interval, the active links must share the subchannels, with each link defined by its set of per-subchannel SNRs. Using this framework, pragmatic protocols are proposed that balance overall capacity and per-link quality of service. They are based on adaptively allocating slots and subchannels using knowledge of the links.

Original languageEnglish (US)
Title of host publicationProceedings - International Conference on Information Technology: Coding and Computing, ITCC 2001
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages178-182
Number of pages5
ISBN (Electronic)0769510620, 9780769510620
DOIs
StatePublished - 2001
EventInternational Conference on Information Technology: Coding and Computing, ITCC 2001 - Las Vegas, United States
Duration: Apr 2 2001Apr 4 2001

Other

OtherInternational Conference on Information Technology: Coding and Computing, ITCC 2001
CountryUnited States
CityLas Vegas
Period4/2/014/4/01

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Information Systems
  • Software

Cite this

Flikkema, P. G. (2001). On multiple access and capacity in frequency-selective channels. In Proceedings - International Conference on Information Technology: Coding and Computing, ITCC 2001 (pp. 178-182). [918787] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ITCC.2001.918787