Method and device for calculating zero-crossing reference sequences for signal detection of angle-modulated signals based on zero crossings of the received signal
AssigneeInfineon Technologies AG
InventorsAndre Neubauer, Jurgen Niederholz
Life of this patent
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Abstract
A method for calculating zero-crossing reference sequences ({ti}) for the data detection of a sequence of zero crossings ({{circumflex over (t)}i}) of a received signal is disclosed. The data detection is determined in a receiver, wherein the received signal is based on a data symbol sequence ({dk}) angle-modulated at a transmitter and transmitted to the receiver. The zero-crossing reference sequences ({ti}) are calculated in accordance with an equation specifying an output of a finite state machine that describes, at least approximately, the signal generation in the transmitter.
Claims17
A method for calculating zero-crossing reference sequences ({ti}) for the data detection of a sequence of zero crossings ({{circumflex over (t)}i}), determined in a receiver, of a received signal that is based on a data symbol sequence ({dk}) angle-modulated at a transmitter and transmitted to the receiver, comprising calculating the zero-crossing reference sequences ({ti}) according to an equation specifying an output of a finite state machine that describes the signal generation in the transmitter.
A device for calculating zero-crossing reference sequences ({ti}) for the data detection of a sequence of zero crossings ({{circumflex over (t)}i}), determined in the receiver, of a received signal that is based on a data symbol sequence ({dk}) angle-modulated at a transmitter and transmitted to the receiver comprising a computing means for calculating the zero-crossing reference sequences according to an equation specifying an output of a finite state machine that describes the signal generation in the transmitter.
A method of demodulating a received angle-modulated signal, comprising:
- detecting a sequence of zero-crossings ({{circumflex over (t)}i}) based on the received angle-modulated signal;
- generating a plurality of zero-crossing reference sequences ({ti}) in accordance with a predetermined algorithm that is a function of a transmitter performing the angle-modulation of the received signal or a similar transmitter;
- and
- determining one or more data symbols associated with the received signal by comparing the detected sequence of zero-crossings ({{circumflex over (t)}i}) with the plurality of zero-crossing reference sequences ({ti}).
Dependencies are inferred from the claim text.