SIGNAL UZATISH VA QABUL QILISHDAGI MUAMMOLARNI O‘RGANISH
Keywords:
signal uzatish, signal qabul qilish, elektromagnit to‘lqinlar, radiokanallar, shahar muhiti, signallar so‘nishi, yo‘qotish (attenuatsiya), multipath (ko‘p nurli tarqalish), fading (so‘nish jarayoni), Doppler effekti, chastota selektivligi, shovqin, xalaqitlar, signal/shovqin nisbati (SNR), modulyatsiya, demodulyatsiya, kodlash, dekodlash, kanal sig‘imi, spektr samaradorligi, 5G texnologiyalari, LTE, raqamli televideniye, DVB-T, OFDM, MIMO tizimlari, massiv MIMO, kognitiv radio, sun’iy yo‘ldosh aloqa, mobil aloqaAbstract
Ushbu maqolada zamonaviy aloqa tizimlarida signal uzatish va qabul qilish jarayonida uchraydigan muammolar o‘rganilgan. Shahar muhitida elektromagnit to‘lqinlarning so‘nishi, ko‘p nurli tarqalish (multipath), shovqin va xalaqitlarning signal sifatiga ta’siri tahlil qilingan. Shuningdek, 5G va raqamli televideniye signallarida uchraydigan xususiy muammolar, ularni kamaytirishning usullari hamda barqaror qabulni ta’minlashdagi modulyatsiya va kodlash texnologiyalarining ahamiyati yoritilgan. Tadqiqot natijalari aloqa tizimlari ishonchliligini oshirish va yangi texnologiyalarni amaliyotga joriy etishda muhim ahamiyatga ega.
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