TY - GEN
T1 - Harnessing receive diversity in distributed multi-user MIMO networks
AU - Chen, Bo Si
AU - Lin, Ching-Ju
AU - Wei, Hung Yu
PY - 2013/12/1
Y1 - 2013/12/1
N2 - In existing multiuser MIMO (MU-MIMO) MAC protocols, a multi-antenna node sends as many concurrent streams as possible once it wins the contention. Though such a scheme allows nodes to utilize the multiplex gain of a MIMO system, it however fails to leverage receive diversity gains provided by multiple receive antennas across nodes. We introduce Multiplex-Diversity Medium Access (MDMA), a MU-MIMO MAC protocol that achieves both the multiplex gain and the receive diversity gain at the same time. Instead of letting a node pair use all the available degrees of freedom, MDMA allows as many contending node pairs to communicate concurrently as possible and share all the degrees of freedom. It hence can exploit the antennas equipped on different receivers to further provide some of concurrent streams more receive diversity, without losing the achievable multiplex gain. We implement a prototype on software radios to demonstrate the throughput gain of MDMA.
AB - In existing multiuser MIMO (MU-MIMO) MAC protocols, a multi-antenna node sends as many concurrent streams as possible once it wins the contention. Though such a scheme allows nodes to utilize the multiplex gain of a MIMO system, it however fails to leverage receive diversity gains provided by multiple receive antennas across nodes. We introduce Multiplex-Diversity Medium Access (MDMA), a MU-MIMO MAC protocol that achieves both the multiplex gain and the receive diversity gain at the same time. Instead of letting a node pair use all the available degrees of freedom, MDMA allows as many contending node pairs to communicate concurrently as possible and share all the degrees of freedom. It hence can exploit the antennas equipped on different receivers to further provide some of concurrent streams more receive diversity, without losing the achievable multiplex gain. We implement a prototype on software radios to demonstrate the throughput gain of MDMA.
KW - diversity gain
KW - medium access control
KW - multi-user mimo
UR - http://www.scopus.com/inward/record.url?scp=84891616911&partnerID=8YFLogxK
U2 - 10.1145/2534169.2491720
DO - 10.1145/2534169.2491720
M3 - Conference contribution
AN - SCOPUS:84891616911
SN - 9781450320566
T3 - SIGCOMM 2013 - Proceedings of the ACM SIGCOMM 2013 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication
SP - 505
EP - 506
BT - Proceedings of the SIGCOMM 2013 and Best Papers of the Co-Located Workshops
T2 - Annual Conference of the ACM Special Interest Group on Data Communication on the Applications, Technologies, Architectures, and Protocols for Computer Communication, ACM SIGCOMM 2013
Y2 - 12 August 2013 through 16 August 2013
ER -