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arXiv 1902.01655eess.SP
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毫米波网络中的无采样TDOA定位

Sampling Free TDOA Localization in Millimeter Wave Networks

Shree Prasad M., Trilochan Panigrahi, Mahbub Hassan, Ming Ding

摘要:

到达时间差(TDOA)是一种广泛使用的技术,用于根据多个接收机处的信号到达时间差来定位无线电发射机。为了使TDOA工作,各个接收器必须精确地估计相应的信号到达时间,这需要以其最高频率内容的速率(通常称为奈奎斯特速率)的至少两倍对信号进行采样。这种采样对于包括30-300 GHz范围内的频率的毫米波频带是不太实际的。在本文中,我们提出了一个能量检测架构,准确地估计从一个单一的皮秒高斯脉冲的到达时间,这使得TDOA定位,而无需在接收机采样。我们推导了估计到达时间的封闭形式的表达式,并通过仿真验证。我们证明了所提出的无采样TDOA定位毫米波发射机作为传统的采样为基础的TDOA准确。

英文摘要:

Time difference of arrival (TDOA) is a widely used technique for localizing a radio transmitter from the difference in signal arrival times at multiple receivers. For TDOA to work, the individual receivers must estimate the respective signal arrival times precisely, which requires sampling the signal at least double the rate of its highest frequency content, commonly known as the Nyquist rate. Such sampling is less practical for the millimeter wave band comprising of frequencies in 30-300 GHz range. In this paper, we propose an energy detection architecture for accurately estimating the time of arrival from a single picosecond Gaussian pulse, which enables TDOA localization without sampling at the receiver. We derive the closed form expression of the estimated time of arrival and validate it via simulation. We demonstrate that the proposed sampling-free TDOA can localize millimeter wave transmitters as accurately as the conventional sampling-based TDOA.

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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