title: Ð¡Ð¸Ð½ÑÐµÐ· Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð· ÐºÐ°ÑÐµÑÑÐ²ÐµÐ½Ð½ÑÑ Ð¸ Ð²ÐµÑÐ¾ÑÑÐ½Ð¾ÑÑÐ½ÑÑ Ñ Ð°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð¸ Ð¾ÑÐµÐ½ÐºÐ¸ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² OFDM-ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð²
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Synthesis of methods and analysis of qualitative and probabilistic characteristics of detection and parameter estimation for OFDM signals
Creators: name: Ð¡Ð°Ð»ÑÐ½Ð¸ÐºÐ¾Ð², ÐÐ°Ð»ÐµÐ½ÑÐ¸Ð½
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: 2021
Subjects: Ð¡Ð¸Ð³Ð½Ð°Ð»Ñ
ÐÐµÑÐµÐºÑÐ¾ÑÑ
Ð³ÑÐ°Ð½Ð¸ÑÐ° ÐÑÐ°Ð¼ÐµÑÐ°-Ð Ð°Ð¾
Ð¾ÑÐµÐ½ÐºÐ° ÑÐ°ÑÑÐ¾ÑÐ½Ð¾Ð¹ Ð¾ÑÑÑÑÐ¾Ð¹ÐºÐ¸
Ð¾ÑÐµÐ½ÐºÐ° Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ¸
Kramer-Rao border
evaluation of frequency tuning
delay estimation

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¸Ñ OFDM ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð¸ Ð¾ÑÐµÐ½ÐºÐµ Ð¸Ñ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð². Ð ÑÐ°Ð±Ð¾ÑÐµ Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÑÐµÑÑÑ Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð»ÑÐ½Ð°Ñ ÑÐ¾ÑÐ½Ð¾ÑÑÑ Ð¾ÑÐµÐ½ÐºÐ¸ ÑÐ°ÑÑÐ¾ÑÐ½Ð¾Ð¹ Ð¾ÑÑÑÑÐ¾Ð¹ÐºÐ¸ Ð¸ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ¸ OFDM ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð². ÐÐ¾Ð»ÑÑÐµÐ½Ñ Ð°Ð½Ð°Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð²ÑÑÐ°Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð³ÑÐ°Ð½Ð¸Ñ ÐÑÐ°Ð¼ÐµÑÐ°-Ð Ð°Ð¾ Ð¾ÑÐµÐ½Ð¾Ðº ÑÐ°ÑÑÐ¾ÑÐ½Ð¾Ð¹ Ð¾ÑÑÑÑÐ¾Ð¹ÐºÐ¸ Ð¸ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ¸ OFDM ÑÐ¸Ð³Ð½Ð°Ð»Ð°. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð¼Ð¾Ð´ÐµÐ»Ñ ÑÐ¸ÑÐ»ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ° Ð´ÐµÐ¹ÑÑÐ²Ð¸ÑÐµÐ»ÑÐ½ÑÑ Ð³ÑÐ°Ð½Ð¸Ñ ÐÑÐ°Ð¼ÐµÑÐ°-Ð Ð°Ð¾ Ð´Ð»Ñ Ð¾ÑÐµÐ½Ð¾Ðº ÑÐ°ÑÑÐ¾ÑÐ½Ð¾Ð¹ Ð¾ÑÑÑÑÐ¾Ð¹ÐºÐ¸ Ð¸ Ð·Ð°Ð´ÐµÑÐ¶ÐºÐ¸. Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐ°ÑÑÐµÑÐ¾Ð² Ð³ÑÐ°Ð½Ð¸Ñ Ð¿ÑÐ¸Ð²Ð¾Ð´ÑÑÑÑ Ð² Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð¾Ñ Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»/ÑÑÐ¼ Ð¸ Ð´Ð»Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¸Ð½ÑÐµÑÐ²Ð°Ð»Ð° Ð°Ð½Ð°Ð»Ð¸Ð·Ð°. Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐ°ÑÑÐµÑÐ¾Ð² Ð³ÑÐ°Ð½Ð¸Ñ ÑÑÐ°Ð²Ð½Ð¸Ð²Ð°ÑÑÑÑ Ñ Ð´Ð¸ÑÐ¿ÐµÑÑÐ¸ÑÐ¼Ð¸ ÑÐ¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÑÐµÐ°Ð»ÑÐ½ÑÑ Ð¾ÑÐµÐ½Ð¾Ðº. Ð ÑÐ°Ð±Ð¾ÑÐµ ÑÐ¸Ð½ÑÐµÐ·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ Ð´Ð²Ðµ Ð¿Ð¾Ð´Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÐµ ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸ Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¸Ñ OFDM ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð½Ð¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¸ ÐºÑÐ¾ÑÑ-ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð´ÐµÑÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ. Ð Ð°Ð±Ð¾ÑÐ° Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð½ÑÑ Ð´ÐµÑÐµÐºÑÐ¾ÑÐ¾Ð² Ð½Ðµ ÑÑÐµÐ±ÑÐµÑ Ð·Ð½Ð°Ð½Ð¸Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸ ÑÑÐ¼Ð°, Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð¿Ð¾Ð»ÐµÐ·Ð½Ð¾Ð³Ð¾ ÑÐ¸Ð³Ð½Ð°Ð»Ð° Ð¸ Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»/ÑÑÐ¼ Ð·Ð° ÑÑÐµÑ Ð½Ð¾ÑÐ¼Ð¸ÑÐ¾Ð²ÐºÐ¸ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ð¹ Ñ Ð²ÑÑÐ¾Ð´Ð° ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¾ÑÐ° Ð½Ð° ÑÑÐµÐ´Ð½ÐµÐµ Ð³ÐµÐ¾Ð¼ÐµÑÑÐ¸ÑÐµÑÐºÐ¾Ðµ ÑÐ½ÐµÑÐ³Ð¸Ð¹ ÐºÐ¾ÑÑÐµÐ»Ð¸ÑÑÐµÐ¼ÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð². ÐÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ Ð²ÐµÑÐ¾ÑÑÐ½Ð¾ÑÑÐ½ÑÐµ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð½ÑÑ Ð´ÐµÑÐµÐºÑÐ¾ÑÐ¾Ð² Ð² ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ð¸ Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÐ¼Ð¸ ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½ÑÐ¼ Ð¸ ÐºÑÐ¾ÑÑ-ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½ÑÐ¼ Ð¼ÐµÑÐ¾Ð´Ð°Ð¼Ð¸ Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¸Ñ. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¸Ð²Ð¾Ð´Ð¸ÑÑÑ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ ÑÐ°ÑÑÐµÑÐ° Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð½ÑÑ Ð¾Ð±Ð½Ð°ÑÑÐ¶Ð¸ÑÐµÐ»ÐµÐ¹.
description: The given work is devoted to the detection of OFDM signals and the estimation of their parameters. The potential accuracy of frequency offset and delay estimation is one of the research subjects. Modified Cramer-Rao Lower bounds are obtained for frequency offset and delay estimation. A model is developed for the numerical calculation of the true Cramer-Rao Lower bounds for frequency offset and delay estimation. The results of calculating the boundaries are given depending on the signal-to-noise ratios and the duration of the analysis interval. The results of the bounds calculations are compared with the variances of the simulated real estimates. Two suboptimal detection strategies based on normalized correlation and cross-correlation detectors are proposed in the given work. The operation of the proposed detectors does not require a priori knowledge of the noise power, the useful signal power, and the signal-to-noise ratio due to the normalization of the values from the correlator output to the geometric mean of the energies of the correlated signals. The probabilistic characteristics of the proposed detectors are analyzed. An algorithm for calculating the parameters of the proposed detectors is presented in given work.