Czasopismo | PRZEGLĄD ELEKTROTECHNICZNY | Rocznik 2021 - zeszyt 11

Efficient Terrestrial Digital Video Broadcasting Receivers Based OFDM Techniques

10.15199/48.2021.11.13

nr katalogowy: 134125
10.15199/48.2021.11.13

Streszczenie

This paper presents the design of efficient digital video propagation global receivers based on an orthogonal frequency distribution multiplexing scheme. The technology of DVB-T standards is developed by DVB assignment specifies the framing, modulation, channel, and noise elimination techniques for digital receiver television broadcasting. The OFDM scheme is a particular multicarrier transmission where a single information flow is transmitting in excess of a numeral of lesser speed sub-carrier with enough strength to radio channel effect. This paper provides a top-level simulation of the basic processing include in the transmitted and received OFDM waveforms under physical channel noise. The possibility to carry defined data containers in addition to audio and video transport streams has increased deployed for many services. The suggested structure of the classical digital broadcasting system was designed with permanent modulation methods which used to promise dependable communication even with very aggressive channel effects

Abstract

W artykule przedstawiono projekt efektywnych globalnych odbiorników cyfrowej propagacji wideo w oparciu o schemat multipleksowania z ortogonalnym rozkładem częstotliwości. Technologia standardów DVB-T jest opracowywana przez przypisanie DVB, określające techniki ramkowania, modulacji, kanałów i eliminacji szumów dla nadawania telewizji cyfrowej. Schemat OFDM jest konkretną transmisją z wieloma nośnymi, w której pojedynczy przepływ informacji przesyła ponad liczbę mniejszej prędkości podnośnej z wystarczającą siłą dla efektu kanału radiowego. W tym artykule przedstawiono symulację na najwyższym poziomie podstawowego przetwarzania w przesyłanych i odbieranych kształtach fal OFDM w warunkach szumu kanału fizycznego. W wielu usługach wzrosła możliwość przenoszenia zdefiniowanych kontenerów danych oprócz strumieni transportowych audio i wideo. Proponowana struktura klasycznego cyfrowego systemu nadawczego została zaprojektowana z wykorzystaniem trwałych metod modulacji, które zapewniały niezawodną komunikację nawet przy bardzo agresywnych efektach kanałowych. (Wydajne naziemne odbiorniki cyfrowej transmisji wideo oparte na technikach OFDM)

Słowa kluczowe

Keywords

Bibliografia

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