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Keyword: AMCOpen AccessArticle
5 Pages, 703 KB 
Performance Analysis of NLMS Channel Estimation for AMC-COFDM System
Abstract:
In this paper we focus on the adaptive modulation and coding (AMC) techniques, makes use of the channel state information (CSI) to improve the spectral efficiency (SE) in wireless communication systems. To achieve higher data rates and lower bit error rate (BER’s) channel coding can be carried out in OFDM, called COFDM. The NLMS channel…
Read More(This article belongs to Section Telecommunications (TEL))
Open AccessArticle
10 Pages, 2,288 KB
Method of Analysis and Classification of Acoustic Emission Signals to Identify Pre-Seismic Anomalies
Abstract:
A new method of analysis and classification of rock acoustic emission signals is proposed. It is based on symbol description of signals and involves the following processing. First, signal segments containing pulses are detected. Second, noise of the detected pulses is reduced by the wavelet filtration method. Fourth-order symlets and adaptive threshold scheme based on…
Read More(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Acoustics (ACO))