A Non-Uniform DMT Transceiver for Noise Reduction in Zero Forcing Equalization

Zero-forcing is a linear equalization technique, with the advantages of simplicity and computational efficiency, and the disadvantage that it can amplify noise in a communication channel. In this paper, we analyze the performance of a nonuniform discrete multitone (DMT) transceiver, having a Daubech...

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Main Authors: Baig, S., Mughal, M.J.
Format: Conference Proceeding
Language:English
Subjects:
Bit error rate
Communication channels
Computational efficiency
Crosstalk
DSL
Noise reduction
OFDM modulation
Performance analysis
Transceivers
Wavelet analysis
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description Zero-forcing is a linear equalization technique, with the advantages of simplicity and computational efficiency, and the disadvantage that it can amplify noise in a communication channel. In this paper, we analyze the performance of a nonuniform discrete multitone (DMT) transceiver, having a Daubechies wavelet filter bank transmultiplexer used to reduce the increase in channel-noise. It is shown that for a non-ideal channel, the transceiver's bit error rate (BER) can significantly deteriorate due to inter-channel crosstalk. We also propose a modification by reducing the symbol rate in the sub-band having the maximum number of channel samples of lower magnitude. Matlab simulations using digital subscriber line (DSL) channel show improvement in BER performance of the ideal non-uniform DMT in comparison with a conventional DMTsystem
doi_str_mv 10.1109/ICET.2006.336018
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subjects Bit error rate
Communication channels
Computational efficiency
Crosstalk
DSL
Noise reduction
OFDM modulation
Performance analysis
Transceivers
Wavelet analysis
title A Non-Uniform DMT Transceiver for Noise Reduction in Zero Forcing Equalization
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