Two-Way Video Communication Based on Network Coding

Stanković, Vladimir; Fagoonee, L.; Moinian, Abdolhosein; Cheng, Samuel

doi:10.1109/icip.2007.4379637

Cited by 9 publications

(22 citation statements)

References 19 publications

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“…In our systems, transmission is simulated over AWGN, using BPSK modulation for rate 1/3 PUMTCs based on (8,4,3,8) and (4,2,1,4) PUM component codes, and a pseudo)random interleaver of size 1000 bits. The (8,4,3,8) PUMTC is more robust, but more complex than the (4,2,1,4) PUMTC. We…”

Section: Simulatio Resultsmentioning

confidence: 99%

“…DF p is summarized in (8), where A DFp ≥1 is the gain and the combination is a simple XOR operation. The node capacity for DF p is equal to that of DF b but overall with N)1 DL transmitted packets and a higher data rate.…”

Section: Proposed Af and Df Schemes Based On Network Codingmentioning

confidence: 99%

“…In this paper, we build on [8] where a full)duplex physical layer NC (PLNC) scheme is proposed for a three)node network comprising two sources which want to share their information via a relay. Results using pseudo)random and quasi)cyclic regular Low Density Parity Check (LDPC) codes showed that, instead of two separate transmissions from the relay, only one transmission was needed, which decreases power consumption and required bandwidth and increases the communications range of the two sources.…”

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confidence: 99%

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Cooperative network-coding system for wireless sensor networks

Attar

Stanković

2012

IET Commun.

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This version is available at https://strathprints.strath.ac.uk/34739/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the ABSTRACTIn this paper, we propose two practical power) and bandwidth)efficient systems based on amplify)and)forward (AF) and decode)and)forward (DF) schemes to address the problem of information exchange via a relay. The key idea is to channel encode each source's message by using a high)performance non)binary turbo code based on Partial Unit Memory (PUM) codes to enhance the bit)error)rate performance, then reduce the energy consumption and increase spectrum efficiency by using network coding (NC) to combine individual nodes' messages at the relay before forwarding to the destination. Two simple and low complexity physical layer NC schemes are proposed based on combinations of received source messages at the relay. We also present the theoretical limits and numerical analysis of the proposed schemes. Simulation results under Additive White Gaussian Noise, confirm that the proposed schemes achieve significant bandwidth savings and fewer transmissions over the benchmark systems which do not resort to NC. Theoretical limits for capacity and Signal to Noise Ratio behaviour for the proposed schemes are derived. The paper also proposes a cooperative strategy that is useful when insufficient combined messages are received at a node to recover the desired source messages, thus enabling the system to retrieve all packets with significantly fewer retransmission request messages.

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Section: Simulatio Resultsmentioning

confidence: 99%

Section: Proposed Af and Df Schemes Based On Network Codingmentioning

confidence: 99%

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Cooperative network-coding system for wireless sensor networks

Attar

Stanković

2012

IET Commun.

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“…They discussed the specific issues imposed by media delay constraints on NC algorithms. Stankovic et al [4] developed two practical systems for two-way real-time video communication among two users via a base station, which exploited the broadcast nature of wireless radio links using NC. The number of necessary transmissions form the BS was reduced, and thus a higher throughput achieved.…”

Section: Introductionmentioning

confidence: 99%

Symbol-Level Network Coding Based Wireless Video Conference System

Zong

Men

Yang

2009

2009 International Symposium on Computer Network and Multimedia Technology

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In this paper, we propose a scheme for robust wireless video conference system based on symbol-level network coding (NC). Network coding allows to increase the throughput (because the number of downlink transmissions from base station to all participants is reduced).We develop three systems, one based on the simplest NC conception, which forms a new symbol by taking the binary sum or XOR of the received two symbols, and we use this system as a benchmark system. Other two, which allow every user to overhear transmission from her/his neighbors and use random linear NC (RLNC), are improvements on the benchmark system. Simulation results show improved wireless video conference systems outperform the benchmark system by a significant PSNR gain and save the transmission slot. Keywords-network coding(NC); wireless video conference systemI.

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“…In [17], the same work was introduced using pseudo-random and quasi-cyclic regular Low-Density Parity-Check (LDPC) codes over one BS.…”

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confidence: 99%

Data Combination over Physical Layer Using Network Coding with PUM Turbo Codes

Attar¹

2017

JCC

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The Base Station (BS) or access point is the building block of wireless networks, so, we propose exploiting it together with the Network Coding (NC) principle. NC suffers from the complexity of the decoding processes, i.e., complicated Jordan Gaussian Elimination (JGE) processes. So, this paper proposes a deterministic NC algorithm to reduce the number of sequential network decoding steps, and hence minimizing the complexity of JGE process resulting to better time delay and processing time. We propose an algorithm that combines higher number of the transmitted packets resulting to better data-rate but worse Bet Error Rate (BER). However, using such strong Forward error correction channel code, which is Partial Unit Memory Turbo Code (PUMTC) results to minimize the losses in the BER to a very acceptable lever, in fact, in Decode-and-Forward (DF) BS, the BER can be regarded as minimum. Simulation results, for both Amplify-and-Forward (AF) and DF BS schemes using PUMTC based on (8,4,3,8) component codes, confirm that using PUMTC mitigates the problem of noise aggregation resulting from applying NC in the proposed schemes.

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Two-Way Video Communication Based on Network Coding

Cited by 9 publications

References 19 publications

Cooperative network-coding system for wireless sensor networks

Cooperative network-coding system for wireless sensor networks

Symbol-Level Network Coding Based Wireless Video Conference System

Data Combination over Physical Layer Using Network Coding with PUM Turbo Codes

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