Mobile data broadcasting over MBMS tradeoffs in forward error correction

Luby, M.; Watson, Mark A.; Gasiba, Tiago Espinha; Stockhammer, Thomas

doi:10.1145/1186655.1186665

Cited by 30 publications

(22 citation statements)

References 5 publications

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“…In contrast to studies in cellular networks [8,9], we find that in 802.11a/g WLANs the PHY modulation/rate that optimizes uncoded multicast performance is also close to that for fountain-coded multicast traffic. This is potentially an important observation as it indicates that in 802.11a/g WLANs cross-layer design for multicast rate-control would bring few benefits and PHY layer rate-control can be carried out without regard to the use of fountain coding at higher layers.…”

Section: Introductioncontrasting

confidence: 95%

“…The joint performance of a fountain code concatenated with a PHY layer code has previously been considered in [8,9] in the context of 3G cellular networks, and more recently in [5][6][7] in a general wireless context. In both cases it is concluded that when fountain codes are used at higher-layers then the overall system performance is improved if the PHY layer modulation/rate is selected to operate at much higher packet error rate (a 20%-30% loss rate in [9]) than would normally be used for uncoded traffic.…”

Section: Discussionmentioning

confidence: 99%

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PHY modulation/rate control for fountain codes in 802.11a/g WLANs

Chen

Subramanian

Leith

2013

Physical Communication

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a b s t r a c tIn this paper we consider the joint performance of fountain codes and 802.11a/g PHY modulation/coding. We consider optimality both in terms of maximizing goodput and minimizing energy, and results are presented for both theoretical and experimental channel models. In contrast to studies in cellular networks, we find that in 802.11a/g WLANs the cross-layer approach of a higher-layer fountain coding with a PHY layer modulation and FEC coding can yield very limited gains, and the PHY modulation/rate that optimizes the uncoded multicast performance is also close to that for fountain-coded multicast traffic over a wide-range of network conditions. This is potentially an important observation as it indicates that in 802.11a/g WLANs cross-layer design for multicast rate control would bring few benefits and PHY layer rate control can be carried out without regard to the use of fountain coding at higher layers.

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Section: Introductioncontrasting

confidence: 95%

Section: Discussionmentioning

confidence: 99%

PHY modulation/rate control for fountain codes in 802.11a/g WLANs

Chen

Subramanian

Leith

2013

Physical Communication

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“…Luby et al [26] also considered employing two layers of EEP FEC at the AL and the PL for MBMS download delivery in UMTS. They investigated the trade-off between the AL FEC and PL FEC codes, and studied the advantages of the AL FEC on the system performance.…”

Section: Related Workmentioning

confidence: 99%

“…This is in contrast to S-I and S-II where the corrupted frames are considered lost. This setup represents the cross-layer FEC schemes proposed in [5,10,11,[26][27][28][29][30][31]46].…”

Section: S-i S-ii S-iii S-ivmentioning

confidence: 99%

Optimized cross-layer forward error correction coding for H.264 AVC video transmission over wireless channels

Talari

Kumar

Rahnavard

et al. 2013

J Wireless Com Network

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Forward error correction (FEC) codes that can provide unequal error protection (UEP) have been used recently for video transmission over wireless channels. These video transmission schemes may also benefit from the use of FEC codes both at the application layer (AL) and the physical layer (PL). However, the interaction and optimal setup of UEP FEC codes at the AL and the PL have not been previously investigated. In this paper, we study the cross-layer design of FEC codes at both layers for H.264 video transmission over wireless channels. In our scheme, UEP Luby transform codes are employed at the AL and rate-compatible punctured convolutional codes at the PL. In the proposed scheme, video slices are first prioritized based on their contribution to video quality. Next, we investigate the four combinations of cross-layer FEC schemes at both layers and concurrently optimize their parameters to minimize the video distortion and maximize the peak signal-to-noise ratio. We evaluate the performance of these schemes on four test H.264 video streams and show the superiority of optimized cross-layer FEC design.

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“…But even the most recent (including those actually within the standardization phase) do provide only a limited adaptivity. Turbo- [2], Fountain- [3] and RaptorCodes [4], [5] have revolutionized forward error coding (FEC) as they approach the Shannon-bound very closely (depending on the channel characteristic down to a few tenth of a dB). The way to achieve this, however, is to overcome the prohibitive increase in complexity 1 http://www.ietf.org/rfc/rfc2733.txt 2 http://www.ietf.org/rfc/rfc4585.txt when designing long codes (the complexity for RS-codes grows with a small power of the block length while that one of Raptor-codes approximately increases linearly).…”

Section: Introductionmentioning

confidence: 99%

Predictable Reliability and Packet Loss Domain Separation for IP Media Delivery

Gorius

Miroll

Karl

et al. 2011

2011 IEEE International Conference on Communications (ICC)

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Abstract-Internet protocol (IP) based media delivery enables applications such as Voice over IP or, most recently, stereoscopic HD-TV. Suchlike transport of typically time-constrained media between two end-points has a number of important characteristics, both on the transport and content side. We focus on live streams of audio-visual data that are assumed as time-constrained and loss-tolerant. We aim at optimizing IP transport over heterogeneous networks by hybrid and loss domain separated error correction with residual error. Hybrid error correction (HEC) approaches the channel capacity dynamically and achieves predictable reliability and predictable delay (PRPD) when residual loss is tolerable, while loss domain separation applies optimally chosen HEC parameters to individual network segments. In this paper, we apply an atomic HEC coding unit to individual segments of network links between source and sink, and show by analysis and example how redundancy is distributed optimally.

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Mobile data broadcasting over MBMS tradeoffs in forward error correction

Cited by 30 publications

References 5 publications

PHY modulation/rate control for fountain codes in 802.11a/g WLANs

PHY modulation/rate control for fountain codes in 802.11a/g WLANs

Optimized cross-layer forward error correction coding for H.264 AVC video transmission over wireless channels

Predictable Reliability and Packet Loss Domain Separation for IP Media Delivery

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