(4)
𝑅 = √1,21 ∙
280
43∙𝜋
= 1,584 km
BS xizmat ko‘rsatish zonasining radiusini 1,584 kmni tashkil qiladi.
XULOSA
Xulosa qilib shuni aytish mumkinki, Wi-Fi IEEE 802.11 standartiga asoslangan, Wi-Fi
Alliance tomonidan boshqariluvchi, lokal tarmoqlarni Internet bilan ta’minlashga xizmat qiluvchi,
simsiz uzatish texnologiyasidir. Hozirgi kunda koplab kafe-restoranlar, kutubxonalar,
qahvaxonalar, savdo markazlari, mehmonxonalar, o‘quv markazlari, ofislar Wi-Fidan keng
foydalanishmoqda.
WiMAX - bu IEEE 802.16 standartiga asoslangan MAN (Metropolitan Area Network –
shahar tarmoqlari) uchun yaratilgan simsiz keng polosali aloqa texnologiyasi hisoblanib, bir nechta
versiyalarga ega. WiMAX moslashuvchan radiochastota kanal o‘tkazish qobiliyatini qo‘llab-
quvvatlaydi. Standart bir radiochastota kanalida yuzlab yoki hatto minglab foydalanuvchilarni
qo‘llab-quvvatlaydi. Abonentlar sonining o‘sishi bilan spektrni sektorlashtirish jarayoni orqali
qayta taqsimlash mumkin. WiMAX xizmat ko‘rsatuvchi provayderlarga VoIP, yuqori tezlikdagi
Internet va video kabi yuqori o‘tkazuvchanlikka asoslangan keng polosali xizmatlarni taqdim etish
imkonini beradi.
INTERNATIONAL SCIENTIFIC AND TECHNICAL CONFERENCE
“DIGITAL TECHNOLOGIES: PROBLEMS AND SOLUTIONS OF PRACTICAL
IMPLEMENTATION IN THE SPHERES”
APRIL 27-28, 2023
405
REFERENCES
1.
Raza Akabar, Syed Aqeel Raza, Usman Shafique, “Performance Evaluation of WiMAX”,
dissertation report, March 2009.
2.
IEEE
802.16e:
IEEE
802.16e
Task
Group
(Mobile
Wireless
MAN)
http://www.ieee802.org/16/tge/.
3.
Mobile WiMAX Part1: “A Technical Overview and Performance Evaluation”, WiMAX
Forum, June 2006.
4.
“WiMAX’s technology for LOS and NLOS environments”, WiMAX Forum, August 2004.
5.
Li, B.; Qin, Y.; Low, C.P.; Gwee, C.L., “A Survey on Mobile WiMAX (Wireless Broadband
Access),” Communications Magazine, IEEE, Vol.45, No.12, pp.70-75, December 2007.
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