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Combined turbo coding and hierarchical QAM for unequal error protection of H.264 coded video

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Title: Combined turbo coding and hierarchical QAM for unequal error protection of H.264 coded video
Authors: Barmada, B. bbarma@essex.ac.uk, Ghandi, M.M.1 mahdi@essex.ac.uk, Jones, E.V.1 ed@essex.ac.uk, Ghanbari, M.1 ghan@essex.ac.uk
Source: Signal Processing: Image Communication. Jun2006, Vol. 21 Issue 5, p390-395. 6p.
Subjects: Turbo languages (Computer program language), Amplitude modulation, Signal-to-noise ratio, Electronic modulation
Abstract: Abstract: This paper investigates the unequal error protected (UEP) transmission of scalable H.264 bitstreams with two-priority layers, where differentiated turbo coding provides better protection for the high priority (HP) base layer than for the low priority (LP) enhancement layer. The drawback of such a method is the high overhead introduced by the channel coding, which results in a low source data rate for the HP layer, and hence lowers video quality. To overcome this problem, we introduce an efficient combination of turbo coding and hierarchical quadrature amplitude modulation (HQAM) to provide a high protection for the HP layer and at the same time maintaining the requisite channel coding redundancy. Simulation results show that, over a wide range of channel signal-to-noise ratio (SNR), our combined technique is superior to non-scalable transmission and outperforms UEP with turbo coding alone. [Copyright &y& Elsevier]
Copyright of Signal Processing: Image Communication is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 20870106
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PubType: Academic Journal
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  Data: <searchLink fieldCode="AR" term="%22Barmada%2C+B%2E%22">Barmada, B.</searchLink><i> bbarma@essex.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Ghandi%2C+M%2EM%2E%22">Ghandi, M.M.</searchLink><relatesTo>1</relatesTo><i> mahdi@essex.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Jones%2C+E%2EV%2E%22">Jones, E.V.</searchLink><relatesTo>1</relatesTo><i> ed@essex.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Ghanbari%2C+M%2E%22">Ghanbari, M.</searchLink><relatesTo>1</relatesTo><i> ghan@essex.ac.uk</i>
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  Data: <searchLink fieldCode="DE" term="%22Turbo+languages+%28Computer+program+language%29%22">Turbo languages (Computer program language)</searchLink><br /><searchLink fieldCode="DE" term="%22Amplitude+modulation%22">Amplitude modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Signal-to-noise+ratio%22">Signal-to-noise ratio</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+modulation%22">Electronic modulation</searchLink>
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  Data: Abstract: This paper investigates the unequal error protected (UEP) transmission of scalable H.264 bitstreams with two-priority layers, where differentiated turbo coding provides better protection for the high priority (HP) base layer than for the low priority (LP) enhancement layer. The drawback of such a method is the high overhead introduced by the channel coding, which results in a low source data rate for the HP layer, and hence lowers video quality. To overcome this problem, we introduce an efficient combination of turbo coding and hierarchical quadrature amplitude modulation (HQAM) to provide a high protection for the HP layer and at the same time maintaining the requisite channel coding redundancy. Simulation results show that, over a wide range of channel signal-to-noise ratio (SNR), our combined technique is superior to non-scalable transmission and outperforms UEP with turbo coding alone. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Signal Processing: Image Communication is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.image.2006.01.001
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      – SubjectFull: Amplitude modulation
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              Text: Jun2006
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