title: ÐÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ LDM Ð² ÑÑÐ°Ð½Ð´Ð°ÑÑÐµ ÑÐ¿ÑÑÐ½Ð¸ÐºÐ¾Ð²Ð¾Ð³Ð¾ ÑÐµÐ»ÐµÐ²Ð¸Ð·Ð¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð²ÐµÑÐ°Ð½Ð¸Ñ DVB-S2(X) Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð³Ð¾ ÑÑÐ¸Ð»Ð¸ÑÐµÐ»Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Applying LDM in DVB-S2(X) satellite video-broadcasting under conditions of non-linear power amplifier
Creators: name: ÐÑÐ·ÑÐºÐ¾, ÐÐ°Ð½Ð¸Ð»Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: LDM
TDM
DVB
RRC
Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½ÑÐ¹ ÑÑÐ¸Ð»Ð¸ÑÐµÐ»Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸
Ð¾ÑÐµÐ½ÐºÐ° ÐºÐ°Ð½Ð°Ð»Ð°
hard limiter
channel estimation

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ Ð¿ÐµÑÐµÐ´Ð°ÑÐ¸ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¸ Ð² Ð²ÐµÑÐ°ÑÐµÐ»ÑÐ½ÑÑ ÑÐ¸ÑÑÐµÐ¼Ð°Ñ, ÑÐ°Ð±Ð¾ÑÐ°ÑÑÐ¸Ñ Ð¿Ð¾ ÑÑÐ°Ð½Ð´Ð°ÑÑÑ DVB-S2(X), Ð·Ð° ÑÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ LDM (Layered Division Multiplexing) â ÑÐ°Ð·Ð´ÐµÐ»ÐµÐ½Ð¸Ñ ÐºÐ°Ð½Ð°Ð»Ð¾Ð² Ð¿Ð¾ ÑÑÐ¾Ð²Ð½Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸, Ð²Ð¼ÐµÑÑÐ¾ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ TDM (Time Division Multiplexing) â ÑÐ°Ð·Ð´ÐµÐ»ÐµÐ½Ð¸Ñ ÐºÐ°Ð½Ð°Ð»Ð¾Ð² Ð¿Ð¾ Ð²ÑÐµÐ¼ÐµÐ½Ð¸. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½Ð¾Ð³Ð¾ ÑÑÐ¸Ð»Ð¸ÑÐµÐ»Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸ ÑÐ¸Ð¿Ð° Â«Ð¸Ð´ÐµÐ°Ð»ÑÐ½ÑÐ¹ Ð¾Ð³ÑÐ°Ð½Ð¸ÑÐ¸ÑÐµÐ»ÑÂ» (Hard Limiter). ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¿ÑÑÑÐ¼ Ð¸Ð¼Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð² ÑÑÐµÐ´Ðµ MATLAB. ÐÐ°Ð¹Ð´ÐµÐ½Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÐµ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÑ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð´Ð¸ÑÐºÑÐµÑÐ½Ð¾Ð³Ð¾ RRC-Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ° Ð¿Ð¾ Ð·Ð°Ð´Ð°Ð½Ð½ÑÐ¼ ÐºÑÐ¸ÑÐµÑÐ¸ÑÐ¼. Ð Ð¾Ð±ÑÑÑ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð´Ð¾Ð±Ð°Ð²Ð»ÐµÐ½Ñ ÑÐµÑÑÑÐµ Ð¼ÐµÑÐ¾Ð´Ð° Ð¾ÑÐµÐ½ÐºÐ¸ ÐºÐ°Ð½Ð°Ð»Ð°, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÑÐ¸Ð»Ð¸ÑÐµÐ»Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸ ÑÐ¸Ð¿Ð° Â«Ð¸Ð´ÐµÐ°Ð»ÑÐ½ÑÐ¹ Ð¾Ð³ÑÐ°Ð½Ð¸ÑÐ¸ÑÐµÐ»ÑÂ». Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÑÐ¸ ÑÑÐµÐ½Ð°ÑÐ¸Ñ, Ð¿ÑÑÐµÐ¼ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð´Ð»Ñ ÐºÐ°Ð¶Ð´Ð¾Ð³Ð¾ ÑÑÐµÐ½Ð°ÑÐ¸Ñ Ð½Ð°Ð¹Ð´ÐµÐ½Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÐµ ÑÐ¸Ð³Ð½Ð°Ð»ÑÐ½ÑÐµ ÑÐ¾Ð·Ð²ÐµÐ·Ð´Ð¸Ñ Ð´Ð»Ñ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ LDM Ð¸ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐµÐµ Ð¸Ð¼ ÐºÐ¾Ð¼Ð¿ÑÐ¾Ð¼Ð¸ÑÑÐ½Ð¾Ðµ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ IBO (Input Back-Off) â ÑÐ¼ÐµÑÐµÐ½Ð¸Ðµ Ð¿Ð¾ Ð²ÑÐ¾Ð´Ñ Ð² ÑÑÐ¸Ð»Ð¸ÑÐµÐ»Ðµ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸. ÐÐ¾ÐºÐ°Ð·Ð°Ð½Ð¾, ÑÑÐ¾ Ð² Ð´Ð²ÑÑ Ð¸Ð· Ð½Ð¸Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ LDM Ð´Ð°ÐµÑ Ð²ÑÐ¸Ð³ÑÑÑ Ð´Ð¾ 15% Ð¾ÑÐ½Ð¾ÑÐ¸ÑÐµÐ»ÑÐ½Ð¾ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ TDM. Ð¢Ð°ÐºÐ¸Ð¼ Ð¾Ð±ÑÐ°Ð·Ð¾Ð¼, Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ LDM Ð² ÑÑÐ°Ð½Ð´Ð°ÑÑÐµ DVB-S2(X) ÑÐ²Ð»ÑÐµÑÑÑ Ð¿ÐµÑÑÐ¿ÐµÐºÑÐ¸Ð²Ð½ÑÐ¼.
description: The given work is devoted to the study of the possibility of increasing the data rate in broadcast systems operating according to the DVB-S2(X) standard due to the use of LDM technology (Layered Division Multiplexing) â channel separation by power level, instead of TDM (Time Division Multiplexing) technology â channel separation by time. The study was performed under the conditions of a non-linear power amplifier of the âHard Limiterâ type. The study was carried out by simulation in MATLAB. The optimal parameters for modeling a discrete RRC pulse according to given criteria were found. 4 channel estimation methods and power amplifier of the âhard limiterâ type had been added to the general model. Three scenarios were considered, the optimal signal constellations for the LDM technology and the corresponding compromise value IBO (Input Back-Off) were found by modeling for each scenario. It was shown that in two of them the use of LDM technology gives a gain of up to 15% relative to TDM technology. Thus, the use of LDM technology in the DVB-S2(X) standard is promising.