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arXiv 0910.0887cs.ITmath.IT
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主动式无线传感器网络中的绿色调制

Green Modulation in Proactive Wireless Sensor Networks

Jamshid Abouei, Konstantinos N. Plataniotis, Subbarayan Pasupathy

摘要:

由于传感器节点的特殊性,选择能量有效且实现复杂度低的调制方式(绿色调制)是无线传感器网络物理层的一个关键因素。本文提出了(据我们所知)的第一个深入分析的能源效率的各种调制方案,使用现实的模型在IEEE 802.15.4标准和目前的最先进的技术,在一个积极的无线传感器网络在瑞利和莱斯平坦衰落信道模型的路径损耗找到最佳方案。为此,我们描述了系统模型,根据一个预定的基于时间的过程中实际的传感器节点。本分析还包括带宽和活动模式持续时间的影响,在通带和超宽带(UWB)类别的流行的调制设计的能源效率。实验结果表明,在各种带通调制和UWB调制方案中,非相干多进制频移键控(NC-MFSK)和开关键控(OOK)具有较低的$M$阶数,在短距离情况下具有显著的节能效果,可以作为无线传感器网络的理想选择。此外,NC-MFSK和OOK方案具有实现复杂度和成本较低的优点。

英文摘要:

Due to unique characteristics of sensor nodes, choosing energy-efficient modulation scheme with low-complexity implementation (refereed to as green modulation) is a critical factor in the physical layer of Wireless Sensor Networks (WSNs). This paper presents (to the best of our knowledge) the first in-depth analysis of energy efficiency of various modulation schemes using realistic models in IEEE 802.15.4 standard and present state-of-the art technology, to find the best scheme in a proactive WSN over Rayleigh and Rician flat-fading channel models with path-loss. For this purpose, we describe the system model according to a pre-determined time-based process in practical sensor nodes. The present analysis also includes the effect of bandwidth and active mode duration on energy efficiency of popular modulation designs in the pass-band and Ultra-WideBand (UWB) categories. Experimental results show that among various pass-band and UWB modulation schemes, Non-Coherent M-ary Frequency Shift Keying (NC-MFSK) with small order of $M$ and On-Off Keying (OOK) have significant energy saving compared to other schemes for short range scenarios, and could be considered as realistic candidates in WSNs. In addition, NC-MFSK and OOK have the advantage of less complexity and cost in implementation than the other schemes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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