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In this paper the effects of receiver nonlinearities are examined for clipping channels. The objective of this work is to determine the optimal receiver functions for additive noise clipping channels. In this case the optimal receiver function will be the one that maximizes the signal-to-noise-plus-distortion ratio (SNDR) between the transmitted and received variables. To solve the problem we utilize...
The impulsive noise is one of the main reasons for bit or burst errors in power line transmission. The use of a level limiter is a simple and intuitive technique to mitigate the noxious effect of impulsive noise in such channels. However the appropriate threshold determination remains empirical. In this paper, a suitable calculation of the log-likelihood ratio (LLR) for Turbo codes (TC) in an impulsive...
This paper considers digital to analog conversion of OFDM signals which have been digitally upconverted to a digital IF (Intermediate Frequency). We examine the effect of clipping and quantization on the received constellations and the uncoded bit error rate (BER) and find that the clipping and quantization can be characterized as a gain and the addition of uncorrelated Gaussian noise. Extensive simulations...
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