2010
DOI: 10.1016/j.sigpro.2009.08.007
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Detection of signals of unknown duration by multiple energy detectors

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Cited by 12 publications
(11 citation statements)
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“…For instance, if the signal is of unknown length, it has been proposed that using multiple energy detectors (MED), each with a layered signal length estimate (N, N/2, N/4, ... ,N/L), where N is the estimated signal length and L is the number of layers, can provide reasonable performance when compared to the standard ED where the length is known (Vergara et al, 2010). However, the optimum performance for this detector occurs when the number of layers is equal to one and the estimated signal duration is the actual duration.…”
Section: Energy Detection Backgroundmentioning
confidence: 99%
“…For instance, if the signal is of unknown length, it has been proposed that using multiple energy detectors (MED), each with a layered signal length estimate (N, N/2, N/4, ... ,N/L), where N is the estimated signal length and L is the number of layers, can provide reasonable performance when compared to the standard ED where the length is known (Vergara et al, 2010). However, the optimum performance for this detector occurs when the number of layers is equal to one and the estimated signal duration is the actual duration.…”
Section: Energy Detection Backgroundmentioning
confidence: 99%
“…This question is addressed in [7] where the theoretical bases of a method consisting on using multiple EDs matched to different novelty durations is presented. Thereby, assuming that the observation vector y corresponds to N time samples, we consider L layers of partitions consisting on successive segmentation by a factor of 2 of the original observation interval (dimension N ).…”
Section: Detection Of Acoustic Signals With Unknown Duration and mentioning
confidence: 99%
“…The theoretical problem of detecting unknown signals with unknown duration has been previously presented in [7], where a multiple energy detector (MED) structure is implemented in order to match the different possible signal durations. No evaluation results of this novel approach have been performed in any real scenario or practical application, but the improvements provided by the theoretical results justify the utility and applicability to acoustic scenarios.…”
Section: Introductionmentioning
confidence: 99%
“…This can be especially interesting for the eld of novelty detection, where specic parameters of the signal are entirely unknown [89]. Multiple energy detectors were applied to subintervals of the original observation interval, leading to a multiple energy detector (MED) structure where signal presence was decided if at least one of the EDs was in favor.…”
Section: Discussionmentioning
confidence: 99%
“…One could devise many strategies for partitioning the initial observation vector of dimension N , but in absence of any a priori information, L layers of partitions are considered to correspond to dierent segmentation degrees of the original observation length [89]. …”
Section: Description Of the Multiple Energy Detector Structurementioning
confidence: 99%