带频偏前导的最优单次检测

Rene Wuerll, J. Robert, G. Kilian, Gerd Heuberger
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引用次数: 3

摘要

单向低功率广域网(LP-WAN)传输来自能量受限的传感器节点,只能在接收器上检测到一次,否则传输的信息将永远丢失。通常低预算的发射机不与接收机同步,并且有明显的频率偏移。因此,我们设计了一个最优检测器,通过使用似然比检验(LRT)的假设检验方法最大化检测概率。理论上最优的探测器是模拟的,但不能实现。对于实际应用,我们提出了近似的检测器,它非常接近理想的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimal One-Shot Detection of Preambles with Frequency Offset
Unidirectional low power wide area network (LP-WAN) transmissions originating from energy-constrained sensor nodes can only be detected once at the receiver or the transmitted information is lost forever. The usually low-budget transmitters are not synchronized with the receiver and have a significant frequency offset. Hence, we design an optimal detector that maximizes the probability of detection with a hypothesis testing approach using a likelihood ratio test (LRT). The theoretically optimal detector is simulated but not implementable. For practical applications, we present approximated detectors, which are very close to the ideal performance.
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