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MOBICOM
2009
ACM

SAM: enabling practical spatial multiple access in wireless LAN

9 years 1 months ago
SAM: enabling practical spatial multiple access in wireless LAN
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 sta
Kun Tan, He Liu, Ji Fang, Wei Wang, Jiansong Zhang
Added 28 May 2010
Updated 28 May 2010
Type Conference
Year 2009
Where MOBICOM
Authors Kun Tan, He Liu, Ji Fang, Wei Wang, Jiansong Zhang, Mi Chen, Geoffrey M. Voelker
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