Robust Lossy Source Coding for Correlated Fading Channels : Exploiting channel memory and soft-decision information using noise resilient vector quantizer and MAP-detection

Language: English

Published by LAP LAMBERT Academic Publishing, 2012

3659192007 / 9783659192005

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nach der Bestellung gedruckt Neuware - Printed after ordering - The joint source-channel coding problem for soft-decision demodulated time-correlated fading channels is investigated without the use channel coding and interleaving. Two robust lossy source coding schemes with low-encoding delay are next proposed for the NBNDC-QB. The first scheme consists of a scalar quantizer, a proper index assignment, and a sequence MAP decoder designed to harness the redundancy left in the quantizer s indices, the channel s soft-decision output and noise correlation. The second scheme is the classical noise resilient vector quantizer known as the channel optimized vector quantizer. It is demonstrated that both systems can successfully exploit the channel s memory and soft-decision information. For the purpose of system design, the recently introduced non-binary noise discrete channel with queue based noise (NBNDC-QB) is adopted. Optimal sequence maximum a posteriori (MAP) detection of a discrete Markov source sent over the NBNDC-QB is first studied. When the Markov source is binary and symmetric, a necessary and sufficient condition under which the MAP decoder is reduced to a simple instantaneous symbol-by-symbol decoder is established.…

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Title
Robust Lossy Source Coding for Correlated Fading Channels : Exploiting channel memory and soft-decision information using noise resilient vector quantizer and MAP-detection
Author
Shervin Shahidi
Publisher
LAP LAMBERT Academic Publishing
Publication year
2012
Condition
Neu
Binding
Taschenbuch
Language
English
ISBN 10
3659192007
ISBN 13
9783659192005
Item weight
203 grams
Dimensions
220x150x8 mm

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