Integrated Broadband Networks; An Introduction to ATM-Based Networks
Integrated Broadband Networks; An Introduction to ATM-Based Networks
Fundamentals of wireless communication
Fundamentals of wireless communication
Robust rate adaptation for 802.11 wireless networks
Proceedings of the 12th annual international conference on Mobile computing and networking
Zigzag decoding: combating hidden terminals in wireless networks
Proceedings of the ACM SIGCOMM 2008 conference on Data communication
Proceedings of the 14th ACM international conference on Mobile computing and networking
ZipTx: Harnessing Partial Packets in 802.11 Networks
Proceedings of the 14th ACM international conference on Mobile computing and networking
Cross-layer wireless bit rate adaptation
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
Interference alignment and cancellation
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
SAM: enabling practical spatial multiple access in wireless LAN
Proceedings of the 15th annual international conference on Mobile computing and networking
Frequency-aware rate adaptation and MAC protocols
Proceedings of the 15th annual international conference on Mobile computing and networking
SNR estimation algorithm based on the preamble for OFDM systems in frequency selective channels
IEEE Transactions on Communications
Adaptive MIMO transmission techniques for broadband wireless communication systems
IEEE Communications Magazine
Fine-grained channel access in wireless LAN
Proceedings of the ACM SIGCOMM 2010 conference
Predictable 802.11 packet delivery from wireless channel measurements
Proceedings of the ACM SIGCOMM 2010 conference
SourceSync: a distributed wireless architecture for exploiting sender diversity
Proceedings of the ACM SIGCOMM 2010 conference
Design and experimental evaluation of multi-user beamforming in wireless LANs
Proceedings of the sixteenth annual international conference on Mobile computing and networking
MIMO rate adaptation in 802.11n wireless networks
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Random access heterogeneous MIMO networks
Proceedings of the ACM SIGCOMM 2011 conference
Clearing the RF smog: making 802.11n robust to cross-technology interference
Proceedings of the ACM SIGCOMM 2011 conference
Beamforming on mobile devices: a first study
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
A light-weight wireless handshake
ACM SIGCOMM Computer Communication Review
A low complexity user scheduling algorithm for uplink multiuser MIMO systems
IEEE Transactions on Wireless Communications
Sum capacity of the vector Gaussian broadcast channel and uplink-downlink duality
IEEE Transactions on Information Theory
Model-driven energy-aware rate adaptation
Proceedings of the fourteenth ACM international symposium on Mobile ad hoc networking and computing
NEMOx: scalable network MIMO for wireless networks
Proceedings of the 19th annual international conference on Mobile computing & networking
Interference alignment by motion
Proceedings of the 19th annual international conference on Mobile computing & networking
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In multiuser MIMO (MU-MIMO) networks, the optimal bit rate of a user is highly dynamic and changes from one packet to the next. This breaks traditional bit rate adaptation algorithms, which rely on recent history to predict the best bit rate for the next packet. To address this problem, we introduce TurboRate, a rate adaptation scheme for MU-MIMO LANs. TurboRate shows that clients in a MU-MIMO LAN can adapt their bit rate on a per-packet basis if each client learns two variables: its SNR when it transmits alone to the access point, and the direction along which its signal is received at the AP. TurboRate also shows that each client can compute these two variables passively without exchanging control frames with the access point. A TurboRate client then annotates its packets with these variables to enable other clients to pick the optimal bit rate and transmit concurrently to the AP. A prototype implementation in USRP-N200 shows that traditional rate adaptation does not deliver the gains of MU-MIMO WLANs, and can interact negatively with MU-MIMO, leading to low throughput. In contrast, enabling MU-MIMO with TurboRate provides a mean throughput gain of 1.7x and 2.3x, for 2-antenna and 3-antenna APs respectively.