title: ÐÐ¾Ð¼ÐµÑ Ð¾ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÑ Ð¿ÑÐ¸ÑÐ¼Ð° Ð¼Ð½Ð¾Ð³Ð¾ÑÐ°ÑÑÐ¾ÑÐ½ÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð¿ÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ð¸ Ð¸ÑÐµÑÐ°ÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð° Ð´ÐµÐ¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ð¸ Ñ Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ð¹ ÑÐ²ÑÐ·ÑÑ Ð¿Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ
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: BER performance of miltifrequency signals using iterative demodulation algorithm with feedback on decision
Creators: name: Ð¡ÑÑÐ¾ÑÐºÐ¸Ð¹, Ð¡Ð²ÑÑÐ¾ÑÐ»Ð°Ð²
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: 2022
Subjects: ÑÐ¿ÐµÐºÑÑÐ°Ð»ÑÐ½Ð¾-ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÐµ ÑÐ¸Ð³Ð½Ð°Ð»Ñ
Ð¿Ð¾Ð¼ÐµÑ Ð¾ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÑ
spectrally efficent
noise immunity

description: ÐÐ±ÑÐµÐºÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ â ÑÐ¿ÐµÐºÑÑÐ°Ð»ÑÐ½Ð¾-ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÐµ ÑÐ¸Ð³Ð½Ð°Ð»Ñ. Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ â ÑÐ»ÑÑÑÐµÐ½Ð¸Ðµ Ð¿Ð¾Ð¼ÐµÑÐ¾ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÐ¸ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ°ÑÑÐ¾ÑÐ½ÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð¿ÑÑÑÐ¼ ÑÑÑÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð¼ÐµÐ¶ÐºÐ°Ð½Ð°Ð»ÑÐ½Ð¾Ð¹ Ð¸Ð½ÑÐµÑÑÐµÑÐµÐ½ÑÐ¸Ð¸. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð±ÑÐ» ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ ÑÐ¸Ð¼Ð¼ÐµÑÑÐ¸ÑÐ½ÑÐ¹ Ð¸ÑÐµÑÐ°ÑÐ¸Ð²Ð½ÑÐ¹ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð´ÐµÐ¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ð¸ ÑÐ¿ÐµÐºÑÑÐ°Ð»ÑÐ½Ð¾-ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ñ Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ð¹ ÑÐ²ÑÐ·ÑÑ Ð¿Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ Ð´Ð»Ñ ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð¸Ð½ÑÐµÑÑÐµÑÐµÐ½ÑÐ¸Ð¸ Ð¿Ð¾Ð´Ð½ÐµÑÑÑÐ¸Ñ ÑÐ°ÑÑÐ¾Ñ Ð½Ð° Ð¿Ð¾Ð¼ÐµÑÐ¾ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ð°. Ð ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑÑÑ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ñ Ð¿ÑÐ¸ÑÐ¼Ð° ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð¸ Ð¿ÑÐµÐ´Ð»Ð°Ð³Ð°ÐµÑÑÑ ÑÐ»ÑÑÑÐµÐ½Ð½Ð°Ñ Ð²ÐµÑÑÐ¸Ñ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð° Ð´ÐµÐ¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ð¸ Ñ Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ð¹ ÑÐ²ÑÐ·ÑÑ Ð¿Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ, ÑÑÐ¸ÑÑÐ²Ð°ÑÑÐ°Ñ Ð±Ð¾Ð»ÑÑÐµÐµ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð¾ Ð¿Ð¾Ð´Ð½ÐµÑÑÑÐ¸Ñ ÑÐ°ÑÑÐ¾Ñ, Ð²Ð»Ð¸ÑÑÑÐ¸Ñ Ð½Ð° 1 ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÐ¼ÑÑ Ð¿Ð¾Ð´Ð½ÐµÑÑÑÑÑ ÑÐ°ÑÑÐ¾ÑÑ. ÐÐ»Ð¸ÑÐ½Ð¸Ðµ Ð¸Ð½ÑÐµÑÑÐµÑÐµÐ½ÑÐ¸Ð¸ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑÑÑ Ð¿ÑÑÑÐ¼ Ð¸ÑÐµÑÐ°ÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¸ÑÐ¼Ð° ÐºÐ°Ð¶Ð´Ð¾Ð¹ Ð¿Ð¾Ð´Ð½ÐµÑÑÑÐµÐ¹ ÑÐ°ÑÑÐ¾ÑÑ Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð½Ð° Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ð¾Ð½Ð½ÑÐµ ÑÐ¸Ð¼Ð²Ð¾Ð»Ñ ÑÐ¾ÑÐµÐ´Ð½Ð¸Ñ Ð¿Ð¾Ð´Ð½ÐµÑÑÑÐ¸Ñ. ÐÐ½Ð°Ð»Ð¸Ð·Ð¸ÑÑÑÑÑÑ ÑÐ»Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ ÑÐ°Ð·Ð½ÑÑ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² Ð¿ÑÐ¸ÑÐ¼Ð°. ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¸ÑÐ¼Ð° Ð¸ Ð¿ÐµÑÐµÐ´Ð°ÑÐ¸ ÑÐ¿ÐµÐºÑÑÐ°Ð»ÑÐ½Ð¾-ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð² Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ð¼ Ð¿Ð°ÐºÐµÑÐµ MATLAB. ÐÐ¾ÑÑÑÐ¾ÐµÐ½Ñ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð²ÐµÑÐ¾ÑÑÐ½Ð¾ÑÑÐ¸ Ð¾ÑÐ¸Ð±ÐºÐ¸ Ð½Ð° Ð±Ð¸Ñ BER Ð¾Ñ Eb/N0 Ð´Ð»Ñ ÑÐ°Ð·Ð½ÑÑ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² Ð¸ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ, Ð¿Ð¾ ÐºÐ¾ÑÐ¾ÑÑÐ¼ Ð¼Ð¾Ð¶Ð½Ð¾ ÑÑÐ´Ð¸ÑÑ Ð¾ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ð³Ð¾ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð°.
description: The subject of the graduate qualification work is âSEFDM signalsâ. This work deals with SEFDM signals and inter-channel interference. Inter-channel interference of subcarriers frequencies, that leads to BER performance degradation at the receiving. Author developed iterative algorithm with feedback on decision in order to prevent incorrect receiving and BER degradation. Main idea of suggested algorithm is iterative analysis of every subcarrier and subtraction from the next. Author considers and compares operation complexity of different algorithms. Work includes model of SEFDM-signals transmitter and receiver that were made in MATLAB and shows improving results of suggested algorithm. Energy gain of suggested algorithm is about 2 dB in comparison with algorithm on 1 subcarrier for BER=10â2 and coefficient of frequency compression Î±=0.9. For Î±=0.8 energy gain is about 15 dB. For lowest Î± result is bigger.