Signal va shovqin tushunchasi. Analog va raqamli signallar. Shovqin va uning turlari
Annotatsiya
Mazkur ishda signal va shovqin tushunchalari, ularning aloqa tizimlaridagi o‘rni hamda analog va raqamli signallar xususiyatlari ilmiy jihatdan tahlil qilingan. Signalning axborot uzatishdagi asosiy rolini ochib berish bilan birga, analog va raqamli signallar o‘rtasidagi asosiy farqlar, ularning afzallik va kamchiliklari yoritilgan. Shuningdek, shovqinning kelib chiqish sabablari va uning turlari — issiqlik, impuls, atmosfera hamda intermodulyatsion shovqinlar — batafsil ko‘rib chiqilgan. Aloqa tizimlarida signal sifatini baholashda signal/shovqin nisbati (SNR)ning ahamiyati va uni yaxshilash usullari ham tahlil qilingan. Tadqiqot natijalari zamonaviy raqamli aloqa tizimlarida signalni qayta ishlash va shovqinni kamaytirish texnologiyalarining dolzarbligini ko‘rsatadi.
Kalit so‘zlar: signal, analog signal, raqamli signal, shovqin, signal/shovqin nisbati (SNR), aloqa tizimlari, diskret signal, uzluksiz signal, issiqlik shovqini, impuls shovqini, atmosfera shovqini, intermodulyatsion shovqin, signalni qayta ishlash, raqamli aloqa.
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