However, whether this modification can be applied to L-band is still unclear, and the choice of cutoff wavenumber is arbitrary and needs to be clarified in the L-band.
1	However	however	ADV	RB	_	15	advmod	15:advmod	Discourse=joint-other_m:96->43:2|SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	1:punct	_
3	whether	whether	SCONJ	IN	_	8	mark	8:mark	_
4	this	this	DET	DT	Number=Sing|PronType=Dem	5	det	5:det	Entity=(178-abstract-giv:act-cf1*-2-coref
5	modification	modification	NOUN	NN	Number=Sing	8	nsubj:pass	8:nsubj:pass	Entity=178)
6	can	can	AUX	MD	VerbForm=Fin	8	aux	8:aux	_
7	be	be	AUX	VB	VerbForm=Inf	8	aux:pass	8:aux:pass	_
8	applied	apply	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	15	csubj	15:csubj	_
9	to	to	ADP	IN	_	12	case	12:case	_
10	L	L	PROPN	NNP	Number=Sing	12	compound	12:compound	Entity=(55-abstract-giv:inact-cf2-3-coref-L_band|SpaceAfter=No|XML=<w>
11	-	-	PUNCT	HYPH	_	10	punct	10:punct	SpaceAfter=No
12	band	band	NOUN	NN	Number=Sing	8	obl	8:obl:to	Entity=55)|XML=</w>
13	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	15	cop	15:cop	_
14	still	still	ADV	RB	Degree=Pos	15	advmod	15:advmod	_
15	unclear	unclear	ADJ	JJ	Degree=Pos|Polarity=Neg	0	root	0:root	SpaceAfter=No
16	,	,	PUNCT	,	_	24	punct	24:punct	_
17	and	and	CCONJ	CC	_	24	cc	24:cc	Discourse=joint-list_m:97->96:0
18	the	the	DET	DT	Definite=Def|PronType=Art	19	det	19:det	Entity=(180-abstract-new-cf3-2-sgl
19	choice	choice	NOUN	NN	Number=Sing	24	nsubj	24:nsubj|26:nsubj|29:nsubj:pass:xsubj	_
20	of	of	ADP	IN	_	22	case	22:case	_
21	cutoff	cutoff	NOUN	NN	Number=Sing	22	compound	22:compound	Entity=(181-abstract-new-cf4-2-coref(182-abstract-new-cf5-1-coref)
22	wavenumber	wavenumber	NOUN	NN	Number=Sing	19	nmod	19:nmod:of	Entity=181)180)
23	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	24	cop	24:cop	_
24	arbitrary	arbitrary	ADJ	JJ	Degree=Pos	15	conj	15:conj:and	_
25	and	and	CCONJ	CC	_	26	cc	26:cc	Discourse=joint-list_m:98->97:0
26	needs	need	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	24	conj	15:conj|24:conj:and	_
27	to	to	PART	TO	_	29	mark	29:mark	_
28	be	be	AUX	VB	VerbForm=Inf	29	aux:pass	29:aux:pass	_
29	clarified	clarify	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	26	xcomp	26:xcomp	_
30	in	in	ADP	IN	_	34	case	34:case	_
31	the	the	DET	DT	Definite=Def|PronType=Art	34	det	34:det	Entity=(55-abstract-giv:act-cf2-4-coref-L_band
32	L	L	PROPN	NNP	Number=Sing	34	compound	34:compound	SpaceAfter=No|XML=<w>
33	-	-	PUNCT	:	_	32	punct	32:punct	SpaceAfter=No
34	band	band	NOUN	NN	Number=Sing	26	obl	26:obl:in	Entity=55)|SpaceAfter=No|XML=</w>
35	.	.	PUNCT	.	_	15	punct	15:punct	_
