Ziv-Zakai bound for rate-constrained time-delay estimation in a wireless sensor network

Author(s):  
S Srinivasan
2013 ◽  
Vol 411-414 ◽  
pp. 1470-1474
Author(s):  
Yi Huang ◽  
Ai Qun Hu ◽  
Sheng Dong Xie ◽  
De Lai Zhu

This paper presents a novel sinusoidal signal time delay tracking scheme based on radio interferometric for wireless sensor networks. We first design an interference signal composed of two sinusoidals with different frequencies in a transmitter. Then a sinusoidal signal time delay tracking algorithm based on DTFT is also presented. Compared with the source-separated radio interferometric time delay estimation (RITDE) technology, the proposed scheme can directly acquire time delay between two rather than among four receivers. Hence it can be employed directly to the traditional time-difference-of-arrival (TDOA) localization algorithm. Simulation results confirm the efficiency and superior performance of the DTFT-based algorithm as compared to the existing filter-based approaches.


Due to the prospective implementation in many fields, study functionality in the wireless sensor network has risen very impressively in recent years. Wireless large-scale sensor networks contain various sources and various sink numbers. This plays a significant part in application performance. To this end, we will concentrate on the primary issue of sink arrangement in this study to minimize time delay in the worst scenario as well as to increase the lifespan of the wireless sensor network. Here we suggest an interconnected anatomy frame for calculating the mobility of the junction sink, routing details. We're talking about the causes of sub problems and bringing them efficient results. Then we combine all these outcomes and suggest the real issue with the optimum polynomial-time algorithm. From this consequence, the merits of involving nodes (mobile sink) and network argument or parametric quantity impact will be displayed. (Example: various sensors, sinks and time delay bound) the lifespan of the network. As we understand, Wireless sensor network nodes are battery-dependent equipment that collects information from the surroundings and send this (information) information to the sink node for further computational processing leading to energy dissipation in batteries The batteries are non-rechargeable or in certain settings it may be hard to replace or recharge. These problems result in the design of a new algorithm for node energy efficiency In typical conditions, the sensor nodes display many to one communication with the sink, resulting in a faster energy depletion of the nodes near the sink, commonly referred to as the energy deficiency hole problem or the hot spot problem. hence in this situation, the mobility of the sink can help in balancing of energy dissipation of the sensor nodes In wireless sensor network when information data hold up by working sink it should be Bounded. Our results show that the proposed algorithm can work better than previous methods and yield results in remote locations such as in the wide region of the wireless sensor network, lake, mountains, hill stations, etc. Additional guideline antennas can boost the transfer chain, which increases to lower hops and low routing delays. Finally, numerical studies analyze the suggested work and simulations are performed to validate through MATLAB.


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