Elektromagnit to‘lqinlar spektri va ularning simsiz tarmoqlarda qo‘llanilishi. simsiz tarmoqlarda signal tarqalish modellari
Abstract
Ushbu ishda elektromagnit to‘lqinlar spektrining asosiy xususiyatlari va ularning zamonaviy simsiz aloqa tizimlaridagi o‘rni tadqiq etiladi. Shuningdek, turli geografik va texnik sharoitlarda signalning so‘nishi va tarqalishini ifodalovchi matematik modellar tahlil qilinadi. Tadqiqot simsiz tarmoqlarning samaradorligini oshirish va aloqa sifatini yaxshilashga qaratilgan.
Kalit so‘zlar: Elektromagnit spektri, simsiz aloqa, signal tarqalishi, so’nish, radiochastotalar, matematik modellashtirish
References
1. Rappaport, T. S. (2002). Wireless Communications: Principles and Practice (2nd ed.). Prentice Hall. (Simsiz aloqa va signal tarqalishi bo‘yicha dunyodagi eng mashhur fundamental darslik).
2. Goldsmith, A. (2005). Wireless Communications. Cambridge University Press. (Signal tarqalish modellari va statistik tahlil bo‘yicha nazariy manba).
3. Seybold, J. S. (2005). Introduction to RF Propagation. John Wiley & Sons. (Radiochastota tarqalishi va matematik modellashtirishga bag‘ishlangan qo‘llanma).
4. Parsons, J. D. (2000). The Mobile Radio Propagation Channel (2nd ed.). John Wiley & Sons. (Mobil aloqa kanallari va so‘nish hodisalarining fizik asoslari).
5. Molisch, A. F. (2011). Wireless Communications (2nd ed.). John Wiley & Sons. (Spektrdan foydalanish va zamonaviy modulyatsiya usullari bo‘yicha keng qamrovli kitob).
6. Hata, M. (1980). Empirical formula for propagation loss in land mobile radio services. IEEE Transactions on Vehicular Technology, 29(3), 317-325. (Mashhur Okumura-Xata modelining asosiy ilmiy maqolasi).
7. Saunders, S. R., & Aragon-Zavala, A. (2007). Antennas and Propagation for Wireless Communication Systems (2nd ed.). John Wiley & Sons. (Antennalar va to‘lqin tarqalishi o‘rtasidagi bog‘liqlik tahlili).
8. Andrews, J. G., Buzzi, S., Choi, W., Hanly, S. V., Lozano, A., Soong, A. C., & Zhang, J. C. (2014). What will 5G be? IEEE Journal on Selected Areas in Communications, 32(6), 1065-1082. (5G va millimetrli to‘lqinlar spektri bo‘yicha muhim tadqiqot).
9. Dahlman, E., Parkvall, S., & Skold, J. (2018). 5G NR: The Next Generation Wireless Access Technology. Academic Press. (Yangi avlod tarmoqlarida spektrdan foydalanish texnologiyalari).
10. Iskandarov, A. A. (2020). Telekommunikatsiya tarmoqlarida signallar tarqalishi nazariyasi. Toshkent: Aloqa. (Sohaga oid mahalliy o‘quv adabiyoti).


