Multiuser Detection
Divert: fine-grained path selection for wireless LANs
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Improving loss resilience with multi-radio diversity in wireless networks
Proceedings of the 11th annual international conference on Mobile computing and networking
Fundamentals of wireless communication
Fundamentals of wireless communication
Proceedings of the 12th annual international conference on Mobile computing and networking
MIMO Wireless Communications: From Real-World Propagation to Space-Time Code Design
MIMO Wireless Communications: From Real-World Propagation to Space-Time Code Design
Beyond the bits: cooperative packet recovery using physical layer information
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Harnessing exposed terminals in wireless networks
NSDI'08 Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation
Zigzag decoding: combating hidden terminals in wireless networks
Proceedings of the ACM SIGCOMM 2008 conference on Data communication
Taking the sting out of carrier sense: interference cancellation for wireless LANs
Proceedings of the 14th ACM international conference on Mobile computing and networking
Sora: high performance software radio using general purpose multi-core processors
NSDI'09 Proceedings of the 6th USENIX symposium on Networked systems design and implementation
Interference alignment and cancellation
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
CSMA/CN: carrier sense multiple access with collision notification
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Design and experimental evaluation of multi-user beamforming in wireless LANs
Proceedings of the sixteenth annual international conference on Mobile computing and networking
Sora: high-performance software radio using general-purpose multi-core processors
Communications of the ACM
SecureAngle: improving wireless security using angle-of-arrival information
Hotnets-IX Proceedings of the 9th ACM SIGCOMM Workshop on Hot Topics in Networks
Airblue: a system for cross-layer wireless protocol development
Proceedings of the 6th ACM/IEEE Symposium on Architectures for Networking and Communications Systems
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
Towards fine-grained radio-based indoor location
Proceedings of the Twelfth Workshop on Mobile Computing Systems & Applications
CSMA/CN: carrier sense multiple access with collision notification
IEEE/ACM Transactions on Networking (TON)
JMB: scaling wireless capacity with user demands
Proceedings of the ACM SIGCOMM 2012 conference on Applications, technologies, architectures, and protocols for computer communication
Rate adaptation for 802.11 multiuser mimo networks
Proceedings of the 18th annual international conference on Mobile computing and networking
Achieving high data rates in a distributed MIMO system
Proceedings of the 18th annual international conference on Mobile computing and networking
802.11ec: collision avoidance without control messages
Proceedings of the 18th annual international conference on Mobile computing and networking
MIDU: enabling MIMO full duplex
Proceedings of the 18th annual international conference on Mobile computing and networking
JMB: scaling wireless capacity with user demands
ACM SIGCOMM Computer Communication Review - Special october issue SIGCOMM '12
ArrayTrack: a fine-grained indoor location system
nsdi'13 Proceedings of the 10th USENIX conference on Networked Systems Design and Implementation
BigStation: enabling scalable real-time signal processingin large mu-mimo systems
Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM
Bringing cross-layer MIMO to today's wireless LANs
Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM
Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM
ZIMO: building cross-technology MIMO to harmonize zigbee smog with WiFi flash without intervention
Proceedings of the 19th annual international conference on Mobile computing & networking
SecureArray: improving wifi security with fine-grained physical-layer information
Proceedings of the 19th annual international conference on Mobile computing & networking
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
Employing the one-sender-multiple-receiver technique in wireless LANs
IEEE/ACM Transactions on Networking (TON)
ADAM: an adaptive beamforming system for multicasting in wireless LANs
IEEE/ACM Transactions on Networking (TON)
Hi-index | 0.02 |
Spatial multiple access holds the promise to boost the capacity of wireless networks when an access point has multiple antennas. Due to the asynchronous and uncontrolled nature of wireless LANs, conventional MIMO technology does not work efficiently when concurrent transmissions from multiple stations are uncoordinated. In this paper, we present the design and implementation of a crosslayer system, called SAM, that addresses the challenges of enabling spatial multiple access for multiple devices in a random access network like WLAN. SAM uses a chain-decoding technique to reliably recover the channel parameters for each device, and iteratively decode concurrent frames with misaligned symbol timings and frequency offsets. We propose a new MAC protocol, called CCMA, to enable concurrent transmissions by different mobile stations while remaining backward compatible with 802.11. Finally, we implement the PHY and MAC layer of SAM using the Sora high-performance software radio platform. Our evaluation results under real wireless conditions show that SAM can improve network uplink throughput by 70% with two antennas over 802.11.