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Optimal One-Shot Detection of Preambles with Frequency Offset

: Wuerll, R.; Robert, J.; Kilian, G.; Heuberger, G.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Conference on Advanced Networks and Telecommunications Systems, ANTS 2018 : 16-19 December 2018, Indore, India
Piscataway, NJ: IEEE, 2018
ISBN: 978-1-5386-8134-3
ISBN: 978-1-5386-8133-6
ISBN: 978-1-5386-8135-0
International Conference on Advanced Networks and Telecommunications Systems (ANTS) <12, 2018, Indore>
Fraunhofer IIS ()

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.