TY - JOUR
T1 - Cross-layer multirate interaction with distributed source coding in wireless sensor networks
AU - Wang, Wei
AU - Peng, Dongming
AU - Wang, Honggang
AU - Sharif, Hamid
AU - Chen, Hsiao Hwa
N1 - Funding Information:
Manuscript received September 12, 2007; revised March 30, 2008 and July 10, 2008; accepted July 16, 2008. The associate editor coordinating the review of this paper and approving it for publication was E Hossain. W. Wang, D. Peng, H. Wang, and H. Sharif are with the Department of Computer and Electronics Engineering, University of Nebraska-Lincoln, USA (e-mail: {wwang, dpeng, hwang, hsharif}@unlnotes.unl.edu). H.-H. Chen is with the Department of Engineering Science, National Cheng Kung University, Taiwan (e-mail: [email protected]). This work was supported in part by US National Science Foundation grant No. 0707944 for wireless sensor networks research and Taiwan National Science Council research grant NSC 97-2219-E-006-004. Digital Object Identifier 10.1109/TWC.2009.071009 Fig. 1. An example of distributed source coding scenario in a wireless sensor network. Source coding rate may vary according to the parent node selection and correlation.
PY - 2009/2
Y1 - 2009/2
N2 - Distributed Source Coding (DSC) is an effective means in reducing data redundancy in Wireless Sensor Networks (WSNs). However, the issues on designing multirate DSC with multirate transmission in WSNs have not been well addressed in the literature. In this paper, we propose a cross-layer approach to achieve optimal DSC data quality while assuring energy efficiency and latency requirement through adjusting multirate DSC data dependencies and network multirate transmission parameters jointly. Specifically, the DSC coding dependency among multirate source coding sensors are fine-tuned to balance compression efficiency and transmission robustness. Transmission rate and retransmission limit on each wireless link are optimized accordingly to achieve Unequal Error Protection (UEP) among inter-dependent DSC streams. Simulation studies demonstrate that the proposed scheme ensures satisfactory DSC data quality and energy efficiency.
AB - Distributed Source Coding (DSC) is an effective means in reducing data redundancy in Wireless Sensor Networks (WSNs). However, the issues on designing multirate DSC with multirate transmission in WSNs have not been well addressed in the literature. In this paper, we propose a cross-layer approach to achieve optimal DSC data quality while assuring energy efficiency and latency requirement through adjusting multirate DSC data dependencies and network multirate transmission parameters jointly. Specifically, the DSC coding dependency among multirate source coding sensors are fine-tuned to balance compression efficiency and transmission robustness. Transmission rate and retransmission limit on each wireless link are optimized accordingly to achieve Unequal Error Protection (UEP) among inter-dependent DSC streams. Simulation studies demonstrate that the proposed scheme ensures satisfactory DSC data quality and energy efficiency.
KW - Cross-layer optimization
KW - DSC
KW - Multi-rate energy efficiency
KW - Wireless sensor network
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U2 - 10.1109/TWC.2009.071009
DO - 10.1109/TWC.2009.071009
M3 - Article
AN - SCOPUS:61349170742
SN - 1536-1276
VL - 8
SP - 787
EP - 795
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
IS - 2
M1 - 4786440
ER -