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The key enabling technology behind JMB is a new low-overhead technique for synchronizing the phase of multiple transmitters in a distributed manner. The design allows a wireless LAN to scale its throughput by continually adding more APs on the same channel. JMB is implemented and tested with both software radio clients and off-the-shelf 802.11n cards, and evaluated in a dense congested deployment resembling a conference room. Results from a 10-AP software-radio testbed show a linear increase in network throughput with a median gain of 8.1--9.4\u00d7. Our results also demonstrate that JMB's joint multiuser beamforming can provide throughput gains with unmodified 802.11n cards.\n          <\/jats:p>","DOI":"10.1145\/2618413","type":"journal-article","created":{"date-parts":[[2014,7,1]],"date-time":"2014-07-01T14:23:02Z","timestamp":1404224582000},"page":"97-106","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":6,"title":["JMB"],"prefix":"10.1145","volume":"57","author":[{"given":"Hariharan","family":"Rahul","sequence":"first","affiliation":[{"name":"Massachusetts Institute of Technology, Cambridge, MA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Swarun","family":"Kumar","sequence":"additional","affiliation":[{"name":"Massachusetts Institute of Technology, Cambridge, MA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dina","family":"Katabi","sequence":"additional","affiliation":[{"name":"Massachusetts Institute of Technology, Cambridge, MA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2014,7]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/1859995.1860019"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1109\/SPAWC.2007.4401342"},{"key":"e_1_2_1_3_1","unstructured":"Distributed Antenna Systems. http:\/\/medicalconnectivity.com\/2008\/02\/05\/distributed-antenna-systems-no-replacement-for-wireless-strategy.  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