Stichting Imec Nederland

Imec

Li Huang

Guido Dolmans

Valer Pop

Dries Neirynck

Mladen Berekovic

Ruud Vullers

Ben Busze

Frank Bouwens

Rene Elfrink

Olivier Rousseaux

The present disclosure is related to detecting a start frame delimiter. A received data packet is correlated with a known sequence, which provides a first correlation result. The received data packet is correlated with a predefined sequence, which yields at least a second correlation result. The data packet comprises at least a preamble portion and a header portion, whereby the preamble portion comprises the start frame delimiter. The predefined sequence is determined according to the preamble pattern. The method further comprises comparing the first correlation result with the second correlation result and comparing the first correlation result with a given threshold. The process of correlating will be continued until two criteria are met: the first correlation result is larger than the threshold and larger than the at least second correlation result. Only then it is decided that the start of frame delimiter pattern has been detected.

Method and apparatus for start of frame delimiter detection

An autonomous transducer system is disclosed. In one aspect, the system includes an energy scavenging module, energy storage module, a load circuit having at least one functional block providing a given functionality, and a power management module arranged for providing power supplied by the energy scavenging module to the load circuit or for exchanging power with the energy storage module. The power management module may further include a tuning module configured to tune the at least one functional block of the load circuit according to a given configuration scheme.

Power management system for wireless autonomous transducer solutions

The invention relates to methods for synchronizing a device to a signal containing a train of pulses representing a programmable number of repetitions of a predetermined code. Pulse position and code phase are searched for. In a first aspect, a programmable number of samples is taken per pulse frame in function of the available number of repetitions of said predetermined code. In a second aspect, the method comprises a signal detection stage from which, after performing a confirmation stage, information can be kept for a subsequent stage. In a third aspect, only a limited number of rotated versions of the predetermined code are checked, using a presumed code phase which is kept from a preceding stage.

Methods for fast and low-power UWB IR baseband receiver synchronization

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Eindhoven, Netherlands

Li Huang