A #(,0-Das0= A,E'r?tA/ F'r G'//'* H?,'t GAa**0, a*= A*t0**a "?,t 6It?/?Jat?'*?* KL"M NOO 30tP'rQs

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1 A #(,0-Das0= A,E'r?tA/ F'r G'//'* H?,'t GAa**0, a*= A*t0**a "?,t 6It?/?Jat?'*?* KL"M NOO 30tP'rQs A,0<a*=0r >0r=0*?tscA- Mt0Fa* &aq,- R00 Ra*E GA'*E- a*= Lart?* "'0,tscA! In this paper we address the problem of capacity optimi5ation in a 6niversal 8obile Telecommunication ;ystem <68T;= radio present an optimi5ation algorithm for finding the best settings of the antenna tilt and common pilot channel power of the base stations. This algorithm is a parametric method, based on a set of evaluated our optimi5ation technicue on a virtual network scenario with DE cells. For this scenario we show an increase in capacity compared to the initial settings of about G0 percent. IeywordsJ 68T; optimi5ation, common pilot channel <CPICH= power, antenna tilt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`@( +>, +@+#; $,+G@(L.,*;@YE,$+ #$. E#)$+,$#$', '@&+&0 a*+)e)r#+)@$ )& $,,.,.3 ]@+> )$ +>, *;#$$)$8 &+#8, +>, $,+G@(L '@$J)8%(#+)@$ J@( )$-,&+E,$+ &#-)$8 #& G,;; #& #J+,( +>, $,+G@(L3 +@ &#+)&JY +>, 8(@G)$8 &,(-)',.,E#$. b1c3 b2c0 P@G,-,(3 +>,(, #(, $%E,(@%& '@$J)8%(#];, *#(#E,+,(& G>)'> #(, E%;+)d.)E,$&)@$#; #$. )$+,(.,*,$.,$+3 #$. +>,)( +>, $,+G@(L )& >)8>;Y $@$d;)$,#(0 P,$',3 J)$.)$8 $,+G@(L '@$J)8%(#+)@$ )& # -,(Y '@E*;,< #$. +)E,d'@$&%E)$8 +#&L0 #;8@()+>E& #(, $,,.,. +@ *,(J@(E *(@',&& Q%)'L;Y #$.,JJ)'),$+;Y3 G)+> E)$)E#; '@$+()]%+)@$ J(@E S>, +>)& *#*,( )& b5c3 #$. +>, *(,&,$+,. #;8@()+>E )$ +>)& *%];)'#+)@$ )& +>, (%;,d]#&,. #**(@#'> *(,&,$+,. )$ b:c0 S>, $,G #;8@()+>E #'>),-,& # >)8>,( '#*#')+Y 8#)$0 [%(+>,(E@(,3 )+ $,,.& J,G,( )+,(#+)@$& #$. +>%& &#-,& '@E*%+#+)@$ +)E,0 a%( '@EE@$ *);@+ '>#$$,;?CeMCPH *@G,( #$. #$+,$$# +);+ &,++)$8&0 S>,&, ',;; *#(#E,+,(& >#-, +>, E@&+ &)8$)J)'#$+ $,+G@(L '#*#')+Y b9c3 bfc0 [@( +>, $,+G@(L '@$J)8%(#+)@$3 G, %&, # &+#+)' TMSS J(,Q%,$'Y.)-)&)@$.%*;,<?[DDH $,+G@(L &)E%;#+@(0 S>, &)E%;#+@( )& *(@-).,. ]Y SWMZOA3 S@J+G#(, \ C@$&%;+)$8 =E]P3 A%&+()#?>++*AggGGG0&YE,$#0'@EH0 C@-,(#8,3 '#*#')+Y3!"#$ &'(r*a,-.',(/0 12-3(/b0r 5-6ct'b0r 199: A,0<a*=0r >0r=0*?tscA 0t a,b 4"7

2 #$. &,(-)', (,;#+,. )&&%,& '#$ ], #$#;YR,. G)+> +>)& S>, #$. #(, )$*%+ +>, S>, %*;)$L #(, #$#;YR,.3 #$. +>, (,&%;+& #$. '#*#')+Y +(#JJ)' +>, %$&,(-,. %&,(&3 #$. &+#+)&+)'&0 S>, *#*,( #& M$ MM3 +>, +>, *#(#E,+,(& )&.,&'()],. )$ @J +>, G)+> +>, (%;,d]#&,. )& *(,&,$+,. )$ MMM0 M$ M^3 +>, #(, 8)-,$0 [)$#;;Y3 #(,.(#G$ )$ ^0 MM0 e#(#e,+,(& S>,(, #(, ]#&, *#(#E,+,(& G>)'> )$J;%,$', #$..,+,(E)$, +>, +>, " #$+,$$# &,++)$8&?+);+3 #R)E%+>3 >,)8>+3 #$+,$$# *#++,($H3 " CeMCP #$. " *#(#E,+,(&0 A;; +>,&, *#(#E,+,(& >#-, # &+(@$8 +>, )$+,(J,(,$', )$ +>, &Y&+,E #$. +>, &,(-,. E@]);, +,(E)$#;&0 M$ +>)& *#*,(3 CeMCP *@G,( #$. #$+,$$# 10 CeMCP e@g,( S>, CeMCP )& %&,. ]Y E@]);, *>@$,& #$ )$)+)#; &Y&+,E &Y$'>(@$)R#+)@$ #$. +@ #). +>, '>#$$,;,&+)E#+)@$ J@( +>,.,.)'#+,. '>#$$,;0 AJ+,( +>, *@G,( #$. G>);, (@#E)$8 )$ +>, $,+G@(L3 # E@]);, *>@$,.,+,(E)$,& )+& &,(-)$8 ',;; ]Y '>@@&)$8 +>, ],&+ CeMCP &)8$#;0 S>%&3 CeMCP *@G,(.,+,(E)$,& +>, ',;; '@-,(#8, #(,#0 +>, CeMCP *@G,( &>()$L +>, ',;; '@-,(#8, #(,#0 S>,(,J@(,3 ]Y #**(@*()#+,;Y #.`%&+)$8 +>, CeMCP +>, ]#&, &+#+)@$&3 +>, %&,(& *,( ',;; '#$ ], ]#;#$',. #E@$8 $,)8>]@()$8 ',;;&3 G>)'> (,.%',& +>, )$+,(d',;; )$+,(J,(,$',3 &+#]);)R,& #$. J#');)+#+,& (#.)@ (,&@%(', E#$#8,E,$+ bhc0 a$ >#$.3 +>,(, #(, &@E, &,++)$8 +>, CeMCP *@G,(A -#;%,& +@@ >)8> G);; '(,#+, )$+,(J,(,$', '#;;,. i*);@+ *@;;%+)@$j +@ +>, $,)8>]@()$8 ',;;&3 G>)'> G);;.,'(,#&, +>, $,+G@(L '#*#')+Y bcc0 S,++)$8 CeMCP *@G,( +@@ ;@G G);; '#%&, %$'@-,(,. #(,#& ],+G,,$ ',;;&0 M$ #$ %$'@-,(,. #(,#3 +>, CeMCP *@G,( )& +@@ G,#L J@( +>, E@]);, *>@$, +@.,'@., +>, &)8$#;3 &@ $,+G@(L #'',&& )& )E*@&&)];,0 20 A$+,$$# S);+ A$+,$$# +);+ )&.,J)$,. #& +>,,;,-#+)@$ +>, E#)$ +>, #$+,$$# (,;#+)-, +@ +>, #R)E%+> *;#$,0 A$+,$$#.@G$+);+ %&,. )$ E@]);, G)(,;,&& &Y&+,E&3 *#(+)'%;#(;Y )$ +>, TMSS $,+G@(L3 G>,(, +(#JJ)' )$ #;; ',;;& )& &)E%;+#$,@%&;Y &%**@(+,. %&)$8 +>, &#E, '#((),( J(,Q%,$'Y0 S>,.,&)(,.,JJ,'+ )& # )$+,(J,(,$', (#+)@ i3 G>)'> )&.,J)$,. #''@(.)$8 +@ b9c #&3 I I oth i # 0?1H M$?1H3 I oth.,$@+,& +>, )$+,(d',;; )$+,(J,(,$', #$. I own )& +>, )$+(#d',;; )$+,(J,(,$',0 BY.@G$+);+)$8 +>, #$+,$$#&3 +@d@g$d',;; )$+,(J,(,$', (#+)@ i '#$ ], (,.%',.A S>, #$+,$$# E#)$ ],#E.,;)-,(& ;,&& *@G,( +@G#(.& +>, $,)8>]@()$8 ]#&, &+#+)@$&3 #$. +>,(,J@(, +>, (#.)#+,. *@G,( 8@,& +@ +>, #(,# +>#+ )& )$+,$.,. +@ ], &,(-,. ]Y +>)& *#(+)'%;#( ]#&, &+#+)@$ bdc0 A..)+)@$#;;Y3 #$ #$+,$$# +);+ #.`%&+E,$+ #;&@ #JJ,'+& +>, ',;; '@-,(#8, #(,#3 G>)'> ;)E)+& +>, +);+ +@ (,#&@$#];, -#;%,&0 own 50 CeMCP e@g,( #$. A$+,$$# S);+ A.`%&+)$8 +>, CeMCP *@G,( #$. #$+,$$# +);+ '#$ )$'(,#&, +>, $,+G@(L '#*#')+Y ]Y )H (,.%')$8 )$+,(d',;; )$+,(J,(,$', #$. *);@+ *@;;%+)@$3 ]#&, &+#+)@$ +(#$&E)+ *@G,( (,&@%(',&3 )))H ;@#. &>#()$8 #$. ]#;#$')$8 ],+G,,$ ',;;&3 #$. SPa #(,#&0 MMM0 a*+)e)r#+)@$ S,'>$)Q%, M$ +>)& &,'+)@$3 +>,.,-,;@*,. #;8@()+>E )&.,&'()],.0 S>, (%;,d #;8@()+>E3 G>)'> )& *(,&,$+,. )$ +>)& *#*,(3 )& +>, #**(@#'> )$+(@.%',. )$ +>, ]#&, &+#+)@$ *#(#E,+,(&3 '#&, CeMCP *@G,( #$. +);+3 ],8)$& G)+> # +>, $,+G@(L0 AJ+,( #$#;YR)$8 +>, +>, J)(&+,-#;%#+)@$3 +>, *(@',&& )& &+#(+,.0 Z#'> ;@@* )$';%.,& +G@ &+,*&0 M$ +>, J)(&+ &+,*3 +>, *#(#E,+,(& #(, '>#$8,. #''@(.)$8 +@ # +,'>$)Q%,3.,&'()],. )$ &%]&,'+)@$ +>)& &,'+)@$0 S>)& $,G +,'>$)Q%, '>#$8,& CeMCP *@G,( #$. #$+,$$# +);+ +@8,+>,(0 M$ '@$+(#&+ +@ b:c3 #$ CeMCP *@G,( #$. #$+,$$# %*+);+)$8 )& #;&@ *@&&)];,0 AJ+,( '>#$8)$8 +>, *#(#E,+,(&3 )$ +>, &,'@$. &+,*3 +>, $,+G@(L )&,-#;%#+,.0 S>,$3 +>, $,<+ ;@@* )& &+#(+,. #$. +>, *#(#E,+,(& #(, '>#$8,. #8#)$0 [)8%(, 1 &>@G& +>, J;@G *(@',&&0 10 S,(-)', D%()$8 *(@',&&3 #$ )$.)'#+@( )& %&,. +@ 4"$ A,0<a*=0r >0r=0*?tscA 0t a,b!"#$ &'(r*a,-.',(/0 12-3(/b0r 5-6ct'b0r 199:

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