id sid tid token lemma pos x346d22100m 1 1 there there PRON x346d22100m 1 2 has have AUX x346d22100m 1 3 been be AUX x346d22100m 1 4 increasing increase VERB x346d22100m 1 5 demand demand NOUN x346d22100m 1 6 for for ADP x346d22100m 1 7 accessible accessible ADJ x346d22100m 1 8 radio radio NOUN x346d22100m 1 9 spectrum spectrum NOUN x346d22100m 1 10 with with ADP x346d22100m 1 11 the the DET x346d22100m 1 12 rapid rapid ADJ x346d22100m 1 13 development development NOUN x346d22100m 1 14 of of ADP x346d22100m 1 15 mobile mobile ADJ x346d22100m 1 16 wireless wireless ADJ x346d22100m 1 17 devices device NOUN x346d22100m 1 18 and and CCONJ x346d22100m 1 19 applications application NOUN x346d22100m 1 20 . . PUNCT x346d22100m 2 1 for for ADP x346d22100m 2 2 example example NOUN x346d22100m 2 3 , , PUNCT x346d22100m 2 4 a a DET x346d22100m 2 5 ghz ghz NOUN x346d22100m 2 6 of of ADP x346d22100m 2 7 spectrum spectrum NOUN x346d22100m 2 8 is be AUX x346d22100m 2 9 needed need VERB x346d22100m 2 10 for for ADP x346d22100m 2 11 fifth fifth ADJ x346d22100m 2 12 - - PUNCT x346d22100m 2 13 generation generation NOUN x346d22100m 2 14 ( ( PUNCT x346d22100m 2 15 5 5 NUM x346d22100m 2 16 g g NUM x346d22100m 2 17 ) ) PUNCT x346d22100m 2 18 cellular cellular ADJ x346d22100m 2 19 communication communication NOUN x346d22100m 2 20 , , PUNCT x346d22100m 2 21 but but CCONJ x346d22100m 2 22 the the DET x346d22100m 2 23 available available ADJ x346d22100m 2 24 spectrum spectrum NOUN x346d22100m 2 25 below below ADP x346d22100m 2 26 6 6 NUM x346d22100m 2 27 ghz ghz NOUN x346d22100m 2 28 can can AUX x346d22100m 2 29 not not PART x346d22100m 2 30 meet meet VERB x346d22100m 2 31 such such ADJ x346d22100m 2 32 requirements requirement NOUN x346d22100m 2 33 . . PUNCT x346d22100m 3 1 fortunately fortunately ADV x346d22100m 3 2 , , PUNCT x346d22100m 3 3 spectrum spectrum VERB x346d22100m 3 4 at at ADP x346d22100m 3 5 higher high ADJ x346d22100m 3 6 frequencies frequency NOUN x346d22100m 3 7 , , PUNCT x346d22100m 3 8 in in ADP x346d22100m 3 9 particular particular ADJ x346d22100m 3 10 , , PUNCT x346d22100m 3 11 millimeter millimeter NOUN x346d22100m 3 12 - - PUNCT x346d22100m 3 13 wave wave NOUN x346d22100m 3 14 ( ( PUNCT x346d22100m 3 15 mmwave mmwave NOUN x346d22100m 3 16 ) ) PUNCT x346d22100m 3 17 bands band NOUN x346d22100m 3 18 , , PUNCT x346d22100m 3 19 can can AUX x346d22100m 3 20 be be AUX x346d22100m 3 21 utilized utilize VERB x346d22100m 3 22 through through ADP x346d22100m 3 23 phased phase VERB x346d22100m 3 24 - - PUNCT x346d22100m 3 25 array array NOUN x346d22100m 3 26 analog analog NOUN x346d22100m 3 27 beamforming beamforme VERB x346d22100m 3 28 to to PART x346d22100m 3 29 provide provide VERB x346d22100m 3 30 access access NOUN x346d22100m 3 31 to to ADP x346d22100m 3 32 large large ADJ x346d22100m 3 33 amounts amount NOUN x346d22100m 3 34 of of ADP x346d22100m 3 35 spectrum spectrum NOUN x346d22100m 3 36 . . PUNCT x346d22100m 4 1 however however ADV x346d22100m 4 2 , , PUNCT x346d22100m 4 3 the the DET x346d22100m 4 4 gain gain NOUN x346d22100m 4 5 provided provide VERB x346d22100m 4 6 by by ADP x346d22100m 4 7 a a DET x346d22100m 4 8 phased phase VERB x346d22100m 4 9 array array NOUN x346d22100m 4 10 is be AUX x346d22100m 4 11 frequency frequency NOUN x346d22100m 4 12 dependent dependent ADJ x346d22100m 4 13 in in ADP x346d22100m 4 14 the the DET x346d22100m 4 15 wideband wideband ADJ x346d22100m 4 16 system system NOUN x346d22100m 4 17 , , PUNCT x346d22100m 4 18 an an DET x346d22100m 4 19 effect effect NOUN x346d22100m 4 20 called call VERB x346d22100m 4 21 beam beam NOUN x346d22100m 4 22 squint squint NOUN x346d22100m 4 23 . . PUNCT x346d22100m 5 1 we we PRON x346d22100m 5 2 examine examine VERB x346d22100m 5 3 the the DET x346d22100m 5 4 nature nature NOUN x346d22100m 5 5 of of ADP x346d22100m 5 6 beam beam NOUN x346d22100m 5 7 squint squint VERB x346d22100m 5 8 and and CCONJ x346d22100m 5 9 develop develop VERB x346d22100m 5 10 convenient convenient ADJ x346d22100m 5 11 models model NOUN x346d22100m 5 12 with with ADP x346d22100m 5 13 either either CCONJ x346d22100m 5 14 a a DET x346d22100m 5 15 uniform uniform ADJ x346d22100m 5 16 linear linear PROPN x346d22100m 5 17 array array NOUN x346d22100m 5 18 ( ( PUNCT x346d22100m 5 19 ula ula PROPN x346d22100m 5 20 ) ) PUNCT x346d22100m 5 21 or or CCONJ x346d22100m 5 22 a a DET x346d22100m 5 23 uniform uniform ADJ x346d22100m 5 24 planar planar ADJ x346d22100m 5 25 array array NOUN x346d22100m 5 26 ( ( PUNCT x346d22100m 5 27 upa upa PROPN x346d22100m 5 28 ) ) PUNCT x346d22100m 5 29 . . PUNCT x346d22100m 6 1 analysis analysis NOUN x346d22100m 6 2 shows show VERB x346d22100m 6 3 that that SCONJ x346d22100m 6 4 beam beam NOUN x346d22100m 6 5 squint squint VERB x346d22100m 6 6 decreases decrease VERB x346d22100m 6 7 channel channel NOUN x346d22100m 6 8 capacity capacity NOUN x346d22100m 6 9 , , PUNCT x346d22100m 6 10 and and CCONJ x346d22100m 6 11 therefore therefore ADV x346d22100m 6 12 , , PUNCT x346d22100m 6 13 path path NOUN x346d22100m 6 14 selection selection NOUN x346d22100m 6 15 should should AUX x346d22100m 6 16 take take VERB x346d22100m 6 17 beam beam NOUN x346d22100m 6 18 squint squint VERB x346d22100m 6 19 into into ADP x346d22100m 6 20 consideration consideration NOUN x346d22100m 6 21 . . PUNCT x346d22100m 7 1 current current ADJ x346d22100m 7 2 channel channel NOUN x346d22100m 7 3 estimation estimation NOUN x346d22100m 7 4 algorithms algorithm NOUN x346d22100m 7 5 assume assume VERB x346d22100m 7 6 no no DET x346d22100m 7 7 beam beam NOUN x346d22100m 7 8 squint squint NOUN x346d22100m 7 9 , , PUNCT x346d22100m 7 10 and and CCONJ x346d22100m 7 11 channel channel NOUN x346d22100m 7 12 estimation estimation NOUN x346d22100m 7 13 error error NOUN x346d22100m 7 14 is be AUX x346d22100m 7 15 increased increase VERB x346d22100m 7 16 by by ADP x346d22100m 7 17 the the DET x346d22100m 7 18 beam beam NOUN x346d22100m 7 19 squint squint NOUN x346d22100m 7 20 , , PUNCT x346d22100m 7 21 further far ADV x346d22100m 7 22 decreasing decrease VERB x346d22100m 7 23 the the DET x346d22100m 7 24 channel channel NOUN x346d22100m 7 25 capacity capacity NOUN x346d22100m 7 26 . . PUNCT x346d22100m 8 1 three three NUM x346d22100m 8 2 problems problem NOUN x346d22100m 8 3 involving involve VERB x346d22100m 8 4 phased phase VERB x346d22100m 8 5 - - PUNCT x346d22100m 8 6 array array NOUN x346d22100m 8 7 beamforming beamforming NOUN x346d22100m 8 8 are be AUX x346d22100m 8 9 studied study VERB x346d22100m 8 10 to to PART x346d22100m 8 11 incorporate incorporate VERB x346d22100m 8 12 and and CCONJ x346d22100m 8 13 compensate compensate VERB x346d22100m 8 14 for for ADP x346d22100m 8 15 beam beam NOUN x346d22100m 8 16 squint squint NOUN x346d22100m 8 17 . . PUNCT x346d22100m 9 1 first first ADV x346d22100m 9 2 , , PUNCT x346d22100m 9 3 we we PRON x346d22100m 9 4 show show VERB x346d22100m 9 5 that that SCONJ x346d22100m 9 6 carrier carrier NOUN x346d22100m 9 7 aggregation aggregation NOUN x346d22100m 9 8 can can AUX x346d22100m 9 9 be be AUX x346d22100m 9 10 used use VERB x346d22100m 9 11 to to PART x346d22100m 9 12 improve improve VERB x346d22100m 9 13 system system NOUN x346d22100m 9 14 throughput throughput NOUN x346d22100m 9 15 to to ADP x346d22100m 9 16 a a DET x346d22100m 9 17 point point NOUN x346d22100m 9 18 . . PUNCT x346d22100m 10 1 we we PRON x346d22100m 10 2 study study VERB x346d22100m 10 3 the the DET x346d22100m 10 4 optimal optimal ADJ x346d22100m 10 5 beam beam NOUN x346d22100m 10 6 alignment alignment NOUN x346d22100m 10 7 to to PART x346d22100m 10 8 maximize maximize VERB x346d22100m 10 9 channel channel NOUN x346d22100m 10 10 capacity capacity NOUN x346d22100m 10 11 , , PUNCT x346d22100m 10 12 and and CCONJ x346d22100m 10 13 demonstrate demonstrate VERB x346d22100m 10 14 that that SCONJ x346d22100m 10 15 , , PUNCT x346d22100m 10 16 with with ADP x346d22100m 10 17 sufficient sufficient ADJ x346d22100m 10 18 band band NOUN x346d22100m 10 19 separation separation NOUN x346d22100m 10 20 , , PUNCT x346d22100m 10 21 focusing focus VERB x346d22100m 10 22 on on ADP x346d22100m 10 23 only only ADV x346d22100m 10 24 one one NUM x346d22100m 10 25 band band NOUN x346d22100m 10 26 outperforms outperform VERB x346d22100m 10 27 carrier carrier NOUN x346d22100m 10 28 aggregation aggregation NOUN x346d22100m 10 29 . . PUNCT x346d22100m 11 1 approximations approximation NOUN x346d22100m 11 2 are be AUX x346d22100m 11 3 developed develop VERB x346d22100m 11 4 for for ADP x346d22100m 11 5 a a DET x346d22100m 11 6 system system NOUN x346d22100m 11 7 with with ADP x346d22100m 11 8 two two NUM x346d22100m 11 9 symmetric symmetric ADJ x346d22100m 11 10 bands band NOUN x346d22100m 11 11 to to PART x346d22100m 11 12 determine determine VERB x346d22100m 11 13 the the DET x346d22100m 11 14 critical critical ADJ x346d22100m 11 15 values value NOUN x346d22100m 11 16 of of ADP x346d22100m 11 17 system system NOUN x346d22100m 11 18 parameters parameter NOUN x346d22100m 11 19 like like ADP x346d22100m 11 20 band band NOUN x346d22100m 11 21 separation separation NOUN x346d22100m 11 22 , , PUNCT x346d22100m 11 23 and and CCONJ x346d22100m 11 24 angle angle NOUN x346d22100m 11 25 of of ADP x346d22100m 11 26 arrival arrival NOUN x346d22100m 11 27 beyond beyond ADP x346d22100m 11 28 which which PRON x346d22100m 11 29 it it PRON x346d22100m 11 30 is be AUX x346d22100m 11 31 preferable preferable ADJ x346d22100m 11 32 not not PART x346d22100m 11 33 to to PART x346d22100m 11 34 aggregate aggregate VERB x346d22100m 11 35 . . PUNCT x346d22100m 12 1 second second ADV x346d22100m 12 2 , , PUNCT x346d22100m 12 3 beamforming beamforme VERB x346d22100m 12 4 codebooks codebook NOUN x346d22100m 12 5 are be AUX x346d22100m 12 6 designed design VERB x346d22100m 12 7 to to PART x346d22100m 12 8 compensate compensate VERB x346d22100m 12 9 for for ADP x346d22100m 12 10 one one NUM x346d22100m 12 11 - - PUNCT x346d22100m 12 12 sided side VERB x346d22100m 12 13 beam beam NOUN x346d22100m 12 14 squint squint VERB x346d22100m 12 15 by by ADP x346d22100m 12 16 imposing impose VERB x346d22100m 12 17 a a DET x346d22100m 12 18 channel channel NOUN x346d22100m 12 19 capacity capacity NOUN x346d22100m 12 20 constraint constraint NOUN x346d22100m 12 21 . . PUNCT x346d22100m 13 1 analysis analysis NOUN x346d22100m 13 2 and and CCONJ x346d22100m 13 3 numerical numerical ADJ x346d22100m 13 4 examples example NOUN x346d22100m 13 5 suggest suggest VERB x346d22100m 13 6 that that SCONJ x346d22100m 13 7 a a DET x346d22100m 13 8 denser dense ADJ x346d22100m 13 9 codebook codebook NOUN x346d22100m 13 10 is be AUX x346d22100m 13 11 required require VERB x346d22100m 13 12 compared compare VERB x346d22100m 13 13 to to ADP x346d22100m 13 14 the the DET x346d22100m 13 15 case case NOUN x346d22100m 13 16 without without ADP x346d22100m 13 17 beam beam NOUN x346d22100m 13 18 squint squint NOUN x346d22100m 13 19 , , PUNCT x346d22100m 13 20 and and CCONJ x346d22100m 13 21 the the DET x346d22100m 13 22 codebook codebook NOUN x346d22100m 13 23 size size NOUN x346d22100m 13 24 increases increase VERB x346d22100m 13 25 as as ADV x346d22100m 13 26 bandwidth bandwidth ADJ x346d22100m 13 27 or or CCONJ x346d22100m 13 28 the the DET x346d22100m 13 29 number number NOUN x346d22100m 13 30 of of ADP x346d22100m 13 31 antennas antenna NOUN x346d22100m 13 32 in in ADP x346d22100m 13 33 the the DET x346d22100m 13 34 array array NOUN x346d22100m 13 35 increases increase VERB x346d22100m 13 36 and and CCONJ x346d22100m 13 37 diverges diverge NOUN x346d22100m 13 38 as as ADP x346d22100m 13 39 either either PRON x346d22100m 13 40 of of ADP x346d22100m 13 41 these these DET x346d22100m 13 42 parameters parameter NOUN x346d22100m 13 43 exceeds exceed VERB x346d22100m 13 44 certain certain ADJ x346d22100m 13 45 limits limit NOUN x346d22100m 13 46 . . PUNCT x346d22100m 14 1 third third ADJ x346d22100m 14 2 , , PUNCT x346d22100m 14 3 to to PART x346d22100m 14 4 decouple decouple VERB x346d22100m 14 5 the the DET x346d22100m 14 6 transmitter transmitter NOUN x346d22100m 14 7 and and CCONJ x346d22100m 14 8 receiver receiver NOUN x346d22100m 14 9 arrays array NOUN x346d22100m 14 10 with with ADP x346d22100m 14 11 two two NUM x346d22100m 14 12 - - PUNCT x346d22100m 14 13 sided sided ADJ x346d22100m 14 14 beam beam NOUN x346d22100m 14 15 squint squint NOUN x346d22100m 14 16 , , PUNCT x346d22100m 14 17 and and CCONJ x346d22100m 14 18 to to PART x346d22100m 14 19 extend extend VERB x346d22100m 14 20 conventional conventional ADJ x346d22100m 14 21 codebook codebook NOUN x346d22100m 14 22 design design NOUN x346d22100m 14 23 algorithms algorithm NOUN x346d22100m 14 24 , , PUNCT x346d22100m 14 25 codebooks codebook NOUN x346d22100m 14 26 with with ADP x346d22100m 14 27 a a DET x346d22100m 14 28 minimum minimum NOUN x346d22100m 14 29 array array NOUN x346d22100m 14 30 gain gain VERB x346d22100m 14 31 constraint constraint NOUN x346d22100m 14 32 for for ADP x346d22100m 14 33 all all DET x346d22100m 14 34 frequencies frequency NOUN x346d22100m 14 35 and and CCONJ x346d22100m 14 36 angles angle NOUN x346d22100m 14 37 of of ADP x346d22100m 14 38 arrival arrival NOUN x346d22100m 14 39 or or CCONJ x346d22100m 14 40 departure departure NOUN x346d22100m 14 41 are be AUX x346d22100m 14 42 also also ADV x346d22100m 14 43 designed design VERB x346d22100m 14 44 to to PART x346d22100m 14 45 compensate compensate VERB x346d22100m 14 46 for for ADP x346d22100m 14 47 the the DET x346d22100m 14 48 beam beam NOUN x346d22100m 14 49 squint squint NOUN x346d22100m 14 50 . . PUNCT x346d22100m 15 1 again again ADV x346d22100m 15 2 , , PUNCT x346d22100m 15 3 either either CCONJ x346d22100m 15 4 the the DET x346d22100m 15 5 bandwidth bandwidth ADJ x346d22100m 15 6 or or CCONJ x346d22100m 15 7 the the DET x346d22100m 15 8 number number NOUN x346d22100m 15 9 of of ADP x346d22100m 15 10 antennas antenna NOUN x346d22100m 15 11 in in ADP x346d22100m 15 12 the the DET x346d22100m 15 13 array array NOUN x346d22100m 15 14 is be AUX x346d22100m 15 15 limited limit VERB x346d22100m 15 16 by by ADP x346d22100m 15 17 the the DET x346d22100m 15 18 effects effect NOUN x346d22100m 15 19 of of ADP x346d22100m 15 20 beam beam NOUN x346d22100m 15 21 squint squint VERB x346d22100m 15 22 if if SCONJ x346d22100m 15 23 the the DET x346d22100m 15 24 other other ADJ x346d22100m 15 25 one one NOUN x346d22100m 15 26 is be AUX x346d22100m 15 27 fixed fix VERB x346d22100m 15 28 . . PUNCT