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Advanced digital signal processing and noise reduction by Saeed V. Vaseghi PDF

By Saeed V. Vaseghi


ISBN-13: 0470740167978

ISBN-10: 0470740159

ISBN-13: 9780470740156

ISBN-10: 0470740167

ISBN-13: 9780470740163

ISBN-10: 0470754060

ISBN-13: 9780470754061

Electronic sign processing performs a primary function within the improvement of recent conversation and data processing structures. the speculation and alertness of sign processing is worried with the id, modelling and utilisation of styles and buildings in a sign technique. The commentary signs are usually distorted, incomplete and noisy and consequently noise relief, the elimination of channel distortion, and substitute of misplaced samples are very important components of a sign processing method.

The fourth version of complex electronic sign Processing and Noise aid updates and extends the chapters within the prior version and comprises new chapters on MIMO structures, Correlation and Eigen research and self reliant part research. the wide variety of subject matters coated during this e-book contain Wiener filters, echo cancellation, channel equalisation, spectral estimation, detection and removing of impulsive and temporary noise, interpolation of lacking facts segments, speech enhancement and noise/interference in cellular communique environments. This e-book offers a coherent and based presentation of the idea and purposes of statistical sign processing and noise relief tools.

  • new chapters on MIMO structures, correlation and Eigen research and self reliant part research

  • complete insurance of complex electronic sign processing and noise aid tools for verbal exchange and data processing platforms

  • Examples and functions in sign and data extraction from noisy facts

  • Comprehensive yet available insurance of sign processing thought together with chance types, Bayesian inference, hidden Markov types, adaptive filters and Linear prediction versions

complex electronic sign Processing and Noise relief is a useful textual content for postgraduates, senior undergraduates and researchers within the fields of electronic sign processing, telecommunications and statistical facts research. it is going to even be of curiosity to specialist engineers in telecommunications and audio and sign processing industries and community planners and implementers in cellular and instant verbal exchange groups.

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Extra resources for Advanced digital signal processing and noise reduction

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The parametric model normally describes the predictable structures and the expected patterns in the signal process, and can be used to forecast the future values of a signal from its past trajectory. Model-based methods normally outperform non-parametric methods, since they utilise more information in the form of a model of the signal process. However, they can be sensitive to the deviations of a signal from the class of signals characterised by the model. The most widely used parametric model is the linear prediction model, described in Chapter 8.

X(f) High frequency spectrum aliasing into low frequency parts Base-band spectrum Low frequency spectrum aliasing into high frequency parts …. …. …. -2Fs -Fs Fs 2Fs …. 25 Aliasing distortion results from the overlap of spectral images (dashed curves) with the baseband spectrum. Note high frequency aliases itself as low frequency and vice versa. In this example the signal is sampled at half the required rate. 26 Illustration of aliasing. Top panel: the sum of two sinewaves, the assumed frequencies of the sinewaves are 6200 Hz and 12 400 Hz, the sampling frequency is 40 000 Hz.

The quantisation step size is Δ = 2V /2n . e. 28), is the uniform probability density function of the noise and Δ = 2V 2−n . 31) 30 Introduction where Psignal is the mean signal power, and α is the ratio in decibels of the peak signal power V 2 to the mean signal power Psignal , which for a sine wave α is 3. 31) every additional bit in an analogue-to-digital converter results in a 6 dB improvement in signal-to-quantisation noise ratio. 28 2 Illustration of the uniform probability distribution of the quantization noise.

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Advanced digital signal processing and noise reduction by Saeed V. Vaseghi

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