INVESTIGATION OF THE METHOD FOR IMPROVING THE NOISE IMMUNITY OF THE DVB – T2 SYSTEM UTILIZING THE STANDARDIZED CHARACTERISTICS

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4 август 2020

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INVESTIGATION OF THE METHOD FOR IMPROVING THE NOISE IMMUNITY OF THE DVB – T2 SYSTEM UTILIZING THE STANDARDIZED CHARACTERISTICS

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MAQOLA ANNOTATSIYASI

Ushbu ishda standartlashtirilgan tavsiflarni qo‘llagan holda DVB–T2 tizimining halaqitbardoshligini oshirish usullari tadqiq etilgan, DVB–T va DVB–T2 tizim parametrlarining ma’lumotlarini qiyosiy tahlillari va DVB–T2 tizimining halaqitbardoshligini oshirish usuli keltirilgan. Bitlar xatoligi koeffitsiyentini (BER) «signal/shovqin» nisbatiga bog‘liqligi tadqiq etildi. DVB–T va DVB–T2 tizimidagi parametrlarning ma’lumotlarini qiyosiy tahlili olib borildi. FFT ning maksimal o‘lchov qiymatida, yuqori modulyatsiya tartibida va minimal himoya intervalini e’tiborga olgan holda tizimning maksimal o‘tkazish qobiliyatini amalga oshirish uchun uzatish tezligi bir xil bo‘lganda, «signal/shovqin» nisbatining qiyosiy tahlili amalga oshirildi va uzatish rejimi uchun texnik ma’lumotlar taqdim etildi. Ishda tadqiqotning quyidagi natijalari keltirilgan: bitlar xatoligi koeffitsiyentini «signal/shovqin» nisbatiga bog‘liqligi, modulyatsiya parametrlari, televizion signallarning uzatilish tezliklari va DVB–T i DVB–T2 tizimlarning me’yoriy paramerlari. QPSK modulyatsiyalangan signallar parametrlarini va tavsiflarini tadqiq etish uchun Borland Delphi dasturida «Modulyatsiyalangan QPSK signallar vaqt diagrammasini hisoblash uchun dastur» ishlab chiqilgan.

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Teglar

# capacity# coding# noise immunity# scrambling# data interleaving# modulation# signal-to-noise ratio# coverage area

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https://eroi.uz/11.0008/A0820-0010

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