Steven Siying Hong Jeffrey Mehlman Sachin Rajsekhar Katti Picasso: flexible RF and spectrum slicing. 283-284 2012 SIGCOMM https://doi.org/10.1145/2342356.2342411 https://doi.org/10.1145/2377677.2342411 conf/sigcomm/2012 db/conf/sigcomm/sigcomm2012.html#HongMK12a