mobiluri telekomunikaciis miwispira da Tanamgzavruli sistemebi

fiWis centrs (fiWebis rgolisaTvis nomriT n es
manZili aRvniSnoT simboloTi a n , n=1,2,..., ); k _ men-e
eqvskuTxa rgolis gverdis gaswvriv rigSi
ganTavsebuli fiWis nomeria, k=0,1,2,...,n-1 (magaliTad,
A da B fiWebs mesame rgolSi eqnebaT nomrebi 0 da
1); aseve aucilebelia rigebi dainomros simboloTi
, =0,1,2,3,4,5 nebismieri rgolisaTvis (magaliTad,
mesame rgolis A da B fiWebi warmoqmnian rigs nomriT
=0); b k _ manZilia punqtiruli eqvskuTxedis
wverodan fiWis centramde nomriT k me-n-e rgolis
erT rigSi (mag., A fiWisaTvis b 0 =0, xolo B fiWisaTvis
b 1 =R 3 ). nax. 1.12-dan gamomdinareobs, rom
a k
n nR 3, n 1,
2,...
;
b kR 3,
k 0,
1,...
n 1.
(1.7)
axla ganvixiloT fiWebis erTi rigi rgolSi
nomriT n (mag., fiWebi A, B rgolSi nomriT n=3).
manZili bs-is lokalur fiWasa da am rigis bazur
sadgurebs Soris TiToeuli rgolis yvela
fiWisaTvis ganisazRvreba tolobebiT (kosinusebis
Teorema):
2 2
R 3(
n k nk)
,
C( n,
k )
sadac, k 0, 1,...,
n 1,
n 1,
2,...,
.
Semdeg, cnobili igiveobis gamoyenebiT (sinusebis
Teorema iribkuTxa samkuTxedisaTvis), SeiZleba
moinaxos kuTxe ( n,
k ) , n
3 1
( , ) sin
( , ) .
2
n k arc
bkC
n k
50
C :
a da ( n,
k )
am gamosaxulebidan gamomdinare SeiZleba
gamoiTvalos manZili gansaxilvel ma-s, romelic
imyofeba r 0 manZilze Tavisi sabazo sadguridan,
da fiWebis centrebs Soris, romlebic rigSi arian
j- nomriT me-n-e rgolSi:
2 2 2
2
2 2
r R ( n k nk)
r 2R
r 3(
n k nk)
cos( ). ,
( n,
k,
l)
3 0 0
( n,
k)
l
aq
π
Φ Φ0
l
3
_ kuTxea a n da r 0 -s Soris, l =0,1,2,...,5,
0 , maSin fardoba C/I ma-s mimRebSi
6 6
romelic imyofeba r manZilze bs-is lokaluri
0
fiWidan, Caiwereba Semdegi saxiT:
C
I
2
( r / R)
r
4
0
n1
5
4
( M 1)
/ 2r
M
0
0
n1
k0 l0
51
/ 2
r
4
( n,
k , l )
sadac M _ aqtiur abonentTa dasaSvebi ricxvia
erT fiWaSi SeuzRudavi fiWisas.
gavyoT ukanaskneli gamosaxulebis mricxveli da
mniSvneli R -4 -ze da aRvniSnoT
n1
5
4
S ( n,
k , l ) , maSin miviRebT
n1
k 0 l0
C
I
4
( M 1)
/ 2(
r0
/ R)
( M / 2 ) S
,
r( n,
k,
l)
( n,
k , l ) da
R
2 4
( r0
/ R)
( r0
/ R)
, (1.8)
aqedan, aqtiuri abonentebis dasaSvebi ricxvi.
2
4
2(
r / R)
( r
/ R)
M
.
( C / I )
0
0 4
4
S ( r / R)
S ( r / R)
kerZod, fardobisas C/I=0,32
0
0