[1] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Jiangsu, Peoples R China
[2] Ecole Polytech Montreal, Poly Grames Res Ctr, Montreal, PQ H3T 1J4, Canada
[3] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
[4] Qualcomm Atheros Inc, San Jose, CA 95110 USA
[5] Nantong Univ, Sch Elect & Informat, Nantong 226019, Peoples R China