TY - GEN
T1 - MIDAS
T2 - 10th ACM International Conference on Emerging Networking Experiments and Technologies, CoNEXT 2014
AU - Xiong, Jie
AU - Sundaresan, Karthikeyan
AU - Jamieson, Kyle
AU - Khojastepour, Mohammad A.
AU - Rangarajan, Sampath
N1 - Publisher Copyright:
©Publication rights licensed to ACM.
PY - 2014/12/2
Y1 - 2014/12/2
N2 - 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.
AB - 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.
KW - 802.11ac
KW - DAS
KW - Distributed antenna system
KW - MIDAS
KW - MUMIMO
KW - Multi-user mimo
KW - Multiple input
UR - http://www.scopus.com/inward/record.url?scp=84920448937&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84920448937&partnerID=8YFLogxK
U2 - 10.1145/2674005.2675014
DO - 10.1145/2674005.2675014
M3 - Conference contribution
AN - SCOPUS:84920448937
T3 - CoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies
SP - 29
EP - 40
BT - CoNEXT 2014 - Proceedings of the 2014 Conference on Emerging Networking Experiments and Technologies
PB - Association for Computing Machinery
Y2 - 2 December 2014 through 5 December 2014
ER -