太赫兹波段无线纳米传感网络上的恒重变长能耗优化编码

Variable Length and Constant Weight Energy Optimal Coding on Wireless Nanonetworks in Terahertz Band

无线纳米传感器网络(WNSNs)被认为是当前最有研究和应用价值的热点方向之一。纳米传感器纳米量级的尺寸和当前有限的技术使得能量消耗和储存成为传感器工作的最大限制。所以,如何为这种网络开发节能措施变得尤为重要。基于应用在WNSNs上的TS-OOK(Time Spread On Off Keying)调制方式和能量收集系统(Energy harvest system),综合纳米传感器本身和太赫兹信道通信特点,提出一种恒码重变码长VLCW(Variable length and constant weight)能耗减少编码并基于这种编码建立新型通信系统能耗模型。同时,分析了这种编码对纳米网络能够达到的吞吐量造成的影响。实验对比分析表明,这种VLCW编码在保证纳米传感器一定吞吐量的情况下,能有效减少纳米传感器通信系统总能耗,表现出较好的能耗优化性能。

Wireless nanometer sensor networks(WNSNs)are considered to be one of the hottest directions of most research and applications.The size of Nano sensor and immature technology make energy consumption and storage the largest restraint for sensor operation.Therefore,it is crucial to develop energy-saving measures for this network.In this paper,based on the TS-OOK(Time Spread On Off Keying)modulation and energy harvest system applied in WNSNs,the VLCW(Variable length and constant weight)energy consumption reduction coding was proposed and a new type of energy consumption model was established.At the same time,the influences on the nanonetwork’s throughput caused by this kind of coding was analyzed.The experimental results show that VLCW coding can effectively reduce the total energy consumption of nanosensor communication system and ensure the nanosensor’s throughput,showing better performance on energy consumption.