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A coal mine roadway is a long and narrow confined space filled with high-power magnetic interference from electrical equipment, which may be accompanied by explosive substances such as gas, dust, etc. Thus, coal mine roadway wireless transmission ...

Recent advancements in mobile Worldwide Interoperability for Microwave Access (WiMAX) standards have led to the development of more reliable, robust and efficient broadband networks that can provide access for both fixed and mobile users. The physical ...

Multiple-input---multiple-output orthogonal frequency division multiplexing (MIMO---OFDM) is a promising 4G technology to increase data rate and capacity of a system. Further, the space---frequency-block-coding (SFBC) technique in MIMO---OFDM system has ...

This paper presents a new color image encoding and decoding technique using Fractional Fourier Transform (FrFT) and Discrete Wavelet Transform (DWT). In proposed work, all three planes of color images are encoded using subbands of DWT and parameters of ...

This paper presents a novel feature extraction scheme for automatic classification of musical instruments using Fractional Fourier Transform (FrFT)-based Mel Frequency Cepstral Coefficient (MFCC) features. The classifier model for the proposed system ...

This paper investigates the Range-Doppler Algorithm based on the Fractional Fourier Transform (RDA-FrFT) to obtain High-Resolution (HR) images for targets in Synthetic Aperture Radar (SAR) imaging. A mathematical framework for the RDA-FrFT is developed ...

In conventional Orthogonal Frequency Division Multiple Access (OFDMA) cellular systems, the fundamental cause of inter-cell interference (ICI) is that the signals from serving Base Station (BS) and interference BSs, are modulated by same exponential ...

The advent of time-frequency methods have opened a whole new chapter in sonar signal processing. Current implementations are based on conventional techniques like FFT etc, which have many shortcomings. Although the Fourier transform yields perfect ...

Transmission over wireless time-varying channels can lead to inter-carrier interference (ICaI) and inter-cell interference (ICeI) in multiple-input multiple-output orthogonal frequency division multiplexing systems. In this paper, it is considered that ...

In this paper, we present an efficient FPGA implementation method of fractional Fourier transform (FrFT) algorithm. Firstly, a polyphase implementation of the FrFT computation algorithm base on the theory of multirate signal processing and filter banks ...

In this work the performance of a Fractional Fourier transform (FrFT) based Minimum Mean Squared Error receiver for MIMO systems with space time processing over Rayleigh faded channels is presented. The proposed receiver called Optimum FrFT based MIMO ...

In image computing, feature extraction plays a key part for image pattern classification. In this article we adopt discrete Fractional Fourier Transform (FrFT) for fractional feature extraction. Firstly, a criterion is proposed to determine the FrFT ...