Concurrent Channel Access and Estimation for Scalable Multiuser MIMO Networking
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CitationLin, Tsung-Han and H. T. Kung. 2012. Concurrent Channel Access and Estimation for Scalable Multiuser MIMO Networking. School of Engineering and Applied Sciences, Harvard University.
AbstractThis paper presents the design of MIMO/CON (“MIMO with concurrent channel access and estimation”), a PHY/MAC cross-layer design delivering throughput scalable to many users for multiuser MIMO wireless networking. By allowing concurrent launches of multiple data transmissions from multiple users, MIMO/CON can fully realize the capacity gain of a multi-antenna MIMO system. Using compressive sensing, MIMO/CON simultaneously estimates channel state information (CSI) of multiple channels from concurrently received preambles. Furthermore, MIMO/CON can boost channel utilization by allowing concurrent transmissions to exceed receive antennas momentarily. MIMO/CON has been implemented and evaluated on a lab testbed with software-defined radios. Further, simulation results suggest that MIMO/CON can achieve an improvement by up to 210% in MAC throughput over existing staggered access protocols in a 5×5 MIMO scenario.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:9299797
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