MIDAS: Empowering 802.11ac networks with multiple-input distributed antenna systems

Jie Xiong, Karthikeyan Sundaresan, Kyle Jamieson, Mohammad A. Khojastepour, Sampath Rangarajan

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

24 Scopus citations

Abstract

Next generation WLANs (802.11ac) are undergoing a major shift in their communication paradigm with the introduction of multi-user MIMO (MU-MIMO), transitioning from single-user to multi-user communications. We argue that the conventional AP deployment model of co-located antennas as well as their PHY and MAC mechanisms are not designed to realize the complete potential of MUMIMO. We propose to leverage distributed antenna systems (DAS) to empower next generation 802.11ac networks. We highlight the multitude of benefits that DAS brings to MU-MIMO and 802.11ac in general. However, several challenges arise in the process of realizing these benefits in practice, where avoiding client modifications and making only minimal software modifications to APs is important to enable rapid adoption. Towards addressing these challenges, we present the design and implementation of MIDAS, the Multiple-Input Distributed Antenna System. MIDAS couples a DAS deployment of AP antennas with a suite of novel yet standards-compatible mechanisms at the PHY and MAC layers that best leverage the DAS deployment to maximize 802.11ac performance. Our WARP-based experimental evaluation demonstrates MIDAS's ability to significantly boost the performance of current 802.11ac design, demonstrating throughput gains over 802.11ac MU-MIMO for 100-200%, while remaining amenable to commercial adoption.

Original languageEnglish (US)
Title of host publicationCoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies
PublisherAssociation for Computing Machinery, Inc
Pages29-40
Number of pages12
ISBN (Electronic)9781450332798
DOIs
StatePublished - Dec 2 2014
Externally publishedYes
Event10th ACM International Conference on Emerging Networking Experiments and Technologies, CoNEXT 2014 - Sydney, Australia
Duration: Dec 2 2014Dec 5 2014

Publication series

NameCoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies

Other

Other10th ACM International Conference on Emerging Networking Experiments and Technologies, CoNEXT 2014
CountryAustralia
CitySydney
Period12/2/1412/5/14

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Keywords

  • 802.11ac
  • DAS
  • Distributed antenna system
  • MIDAS
  • MUMIMO
  • Multi-user mimo
  • Multiple input

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  • Cite this

    Xiong, J., Sundaresan, K., Jamieson, K., Khojastepour, M. A., & Rangarajan, S. (2014). MIDAS: Empowering 802.11ac networks with multiple-input distributed antenna systems. In CoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies (pp. 29-40). (CoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies). Association for Computing Machinery, Inc. https://doi.org/10.1145/2674005.2675014