7-rasm.
Qabul qilgich atrofidagi shovqin zonasida qurilmalarning joylashishiga
misol:
bu yerda x uzatuvchidan T
0
signalining tarqalishi radiusiga mos keladi. Xuddi shunday
pck (qabul qiluvchining qamrovida ck) qabul qiluvchining qamrov zonasida uzatgichni
o’z ichiga olishi ehtimoli quyidagicha hisoblanadi:
(6)
Formulalardan (5) va (6) α va β mos ravishda uzatuvchi va qabul qiluvchi uchun
nur burchaklari bo’lib α=102
0
| N uzatgich elementi va β=102
0
| N qabul qiluvchi. Qabul
qilgichdan r masofada joylashgan shovqin tugunidan
signalni blokirovka qilish
ehtimolini hisoblaylik : (7)
(7:8)
Formulani ohirgi elementi CB
r
f(r) taqsimlanish zichligini hisoblashga o’tamiz:
(9)
bu yerda pL nuqtaning r radiusli aylanada bo’lish ehtimoli λπR
2
– nuqta oqimi topilgan
(4), (8) va (9) ifodalarni (3) ga almashtiramiz, keyin interfrensiyaning o’rtacha qiymati
(10) formula bilan ifodalanadi:
(10)
Nazorat savollari
1.Aloqa texnologiyasi turlari va ularning rivojlanish tarixi.
2.WiGig kengpolasali aloqa texnologiyasining asosiy parametrlari haqida
nimalarni bilasiz ?
3.WiGig displey kengaytmasi
FOYDALANILGAN ADABIYOTLAR:
1.Hemant Chaska, “5 Ways WiGig Differs from Today’s WiFi” , article, 2018.
2.Natale Patriciello
,
Sanjay Goyal, Sandra Lagen
,
Lorenza Giupponi
,
Biljana Bojovic,
Alpaslan Demir, Mihaela Beluri, ”NR-U and WiGig Coexistence in 60 GHz Bands” ,
article.
3.Thomas Nitsche, Carlos Cordeiro, Adriana Flores, Edward W. Knightly, Eldad
Perahia and Joerg C. Widmer. “IEEE 802.11ad: Directional 60 GHz
Communication
for Multi-Gbps Wi-Fi” , IMDEA Networks Institute, Madrid, Spain, Intel Corporation,
Hillsboro, USA, ECE Department, Rice University, Houston, USA, Universidad
Carlos III, Madrid, Spain, article.
4. SaiShankar N, Debashis Dash, Hassan El Madi, and Guru Gopalakrishnan
“WiGig and IEEE 802.11ad For Multi-Gigabyte-Per-Second WPAN and WLAN”
Tensorcom Inc., 5900 Pasteur Court, Carlsbad, CA 92008, article.
5. Natale Patriciello, Sanjay Goyal, Sandra Lagen, Lorenza Giupponi, Biljana
Bojovic´, Alpaslan Demir, Mihaela Beluri, “NR-U and WiGig Coexistence in 60 GHz
Bands” , Centre Tecnologic de Telecomunicacions de Catalunya (CTTC/CERCA),
Castelldefels, Barcelona, Spain `InterDigital Communications, Inc., Melville, New
York, USA
