On the delay and energy performance in coded two-hop line networks with bursty erasures

Lucani, Daniel E.; Kliewer, Joerg

doi:10.1109/iswcs.2011.6125410

Cited by 6 publications

(5 citation statements)

References 13 publications

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“…In [4], several factors that have a direct impact on energy efficiency of satellite and mobile terminals have been discussed, including dynamic spectrum access and cross layer design. In [2] and [5], the authors show that channel-aware transmission schemes jointly with network coding, can serve to reduce the delay and allow for energy performance gains. In [3], the authors propose novel adaptive network coding schemes and show a clear trade-off between energy-driven channel-aware schemes, that remain silent when channel encounter high erasures, and rate-driven channel-aware schemes that chose to transmit more to account for erasures.…”

Section: Introductionmentioning

confidence: 99%

Energy Efficient Adaptive Network Coding Schemes for Satellite Communications

Gharsellaoui

Ghanem

Tarchi

et al. 2017

Wireless and Satellite Systems

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In this paper, we propose novel energy efficient adaptive network coding and modulation schemes for time variant channels. We evaluate such schemes under a realistic channel model for open area environments and Geostationary Earth Orbit (GEO) satellites. Compared to non-adaptive network coding and adaptive rate efficient network-coded schemes for time variant channels, we show that our proposed schemes, through physical layer awareness can be designed to transmit only if a target quality of service (QoS) is achieved. As a result, such schemes can provide remarkable energy savings.

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Section: Introductionmentioning

confidence: 99%

Energy Efficient Adaptive Network Coding Schemes for Satellite Communications

Gharsellaoui

Ghanem

Tarchi

et al. 2017

Wireless and Satellite Systems

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“…They showed that such strategy can provide throughput performance comparable to multipath flooding of the network while utilizing bandwidth nearly as efficiently as single‐path routing. In Lucani and Kliewer, the authors studied the delay and energy performance under burst erasures. They proved that channel‐aware policies reduce delay by up to a factor of 3 and significantly increase the network's stable throughput region compared to a simple queue‐length driven policy.…”

Section: Introductionmentioning

confidence: 99%

“…Physical layer aware adaptive network coding strategies are driven by CSI estimation at the receiver side; however, such strategies are usually limited to packet erasure channel model that is a two‐state Markov model of Gilbert‐Elliott channel, where a packet is either dropped with a certain probability or received without errors (see previous studies()). In Shrader et al, the authors developed a rate‐controlled multipath strategy using network coding.…”

Section: Introductionmentioning

confidence: 99%

Physical layer aware adaptive network coding schemes for satellite communications

Ghanem

Gharsellaoui

Tarchi

et al. 2017

Satell Commun Network

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Network coding is a technology that provides core benefits to communication services, in terms of reliability, latency, and data rate, by leveraging on a coding structure that reduces the necessity for retransmissions of packets. Satellite communications are one of the potential applications that can leverage on the benefits of network coding due to their challenging fading environments and high round trip times. By introducing physical layer awareness, network coding offers further gains to such communications systems. In this paper, we propose different rate and energy efficient adaptive network coding schemes for time-variant channels. We compare our proposed physical layer aware adaptive schemes to physical layer nonadaptive network coding schemes for time-variant channels. The proposed schemes demonstrate that adaptation of packet transmissions based on the channel variations over time, and their corresponding time-dependent erasures, allows for significant gains in terms of throughput, delay, and energy efficiency. We shed light on the trade-off between energy efficiency and delay-throughput gains, demonstrating that conservative adaptive approaches that favor less transmission under high erasures might cause higher delay and less-throughput gains in comparison to nonconservative approaches that favor more transmissions to account for high erasures. We show that such schemes are robust with regimes of large or small packet sizes; albeit the energy per bit is affected, similar rate and energy gains can be obtained. In turn, we show that the performance gains are driven by the duty cycle of the packets silent transmission and not by the packet size. KEYWORDS adaptive network coding, data rate efficiency, energy efficiency, satellite communications INTRODUCTIONNetwork coding provides a key-enabling technology to systems that exhibit high latency and challenging wireless conditions. Network coding was firstly introduced in Ahlswede et al 1 as a promising technique that can achieve the min-cut capacity in wired networks. The applicability of network coding was firstly demonstrated in its XOR form. 2The promising gains introduced by network coding make it of potential interest for several practical applications, 2-4 particularly as a key-enabling technology in Fifth Generation (5G) wireless networks. 5 Another interesting application scenario is the satellite communications (SatComs), whose trends are going towards a global coverage with high-throughput and low-latency services to the end users. 6 SatComs represent also a challenging scenario due to their large latencies (especially in case of Geostationary Earth Orbit [GEO]), relatively high packet erasure rates and high deployment costs. As part of the 5G global heterogeneous network, SatComs allow for a ubiquitous coverage. 7When the wireless network is impaired by more challenging channel characteristics, like deep fading, or interference, the diversity benefits introduced by network coding can be exploited. 8 From the decoder perspective, Gollakota and Katab...

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“…Network codes adaptation strategies that are based on CSI are limited to packet erasure channel model, that is, a two-state Markov model of Gilbert-Elliott channel, in which a packet is whether dropped with a certain probability or received without error, see [7], [8]. In [7], the authors developed a rate-controlled, multipath strategy using network coding.…”

Section: Introductionmentioning

confidence: 99%

“…They showed that such strategy can provide throughput performance comparable to multipath flooding of the network while utilizing bandwidth nearly as efficiently as single-path routing. In [8], the authors studied the delay and energy performance under bursty erasures. They proved that channel-aware policies reduce delay by up to a factor of 3 and significantly increase the network's stable throughput region compared to a simple queue-length driven policy.…”

mentioning

confidence: 99%

Adaptive network coding schemes for satellite communications

Gharsellaoui¹,

Ghanem²,

Tarchi³

et al. 2016

2016 8th Advanced Satellite Multimedia Systems Conference and the 14th Signal Processing for Space Communications Workshop (ASM

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In this paper, we propose two novel physical layer aware adaptive network coding and coded modulation schemes for time variant channels. The proposed schemes have been applied to different satellite communications scenarios with different Round Trip Times (RTT). Compared to adaptive network coding, and classical non-adaptive network coding schemes for time variant channels, as benchmarks, the proposed schemes demonstrate that adaptation of packet transmission based on the channel variation and corresponding erasures allows for significant gains in terms of throughput, delay and energy efficiency. We shed light on the trade-off between energy efficiency and delay-throughput gains, demonstrating that conservative adaptive approaches that favors less transmission under high erasures, might cause higher delay and less throughput gains in comparison to non-conservative approaches that favors more transmission to account for high erasures.

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On the delay and energy performance in coded two-hop line networks with bursty erasures

Cited by 6 publications

References 13 publications

Energy Efficient Adaptive Network Coding Schemes for Satellite Communications

Energy Efficient Adaptive Network Coding Schemes for Satellite Communications

Physical layer aware adaptive network coding schemes for satellite communications

Adaptive network coding schemes for satellite communications

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