Method and system for controlling a receiver in a digital communication system
AssigneesSTMicroelectronics S.r.l., Commissariat a l'Energie Atomique
InventorsThierry Lenez, Jean-Benoit Pierrot, Olivier Isson
Life of this patent
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Abstract
Detection method and device for a receiver in a digital communication system designed to process a frame comprising a periodic sub-set of length n, said method comprising the following steps:—determining a first vector u having a length n;—determining a second shifted vector v;—calculating a correlation function between said first and second vectors;—calculating a quadratic error function between said first and second vectors;—calculating a first cost function that is a linear combination of both preceding functions and, according to the sign of the result,—calculating a second cost function of frame beginning estimate; and—starting the communication system receiver.
Claims12
A method for controlling a receiver in a digital communication system transmitting a frame comprising a periodic sub-set, said method comprising the steps of:
- determining a first vector u having a length n;
- determining a second vector v shifted by a whole number of periods;
- calculating a correlation between said first and second vectors;
- calculating a quadratic error between said first and second vectors;
- calculating a first cost function F1 that is a linear combination of both preceding calculations;
- and
- based on the sign of a result of the first cost function F1, selectively:
- calculating a second cost function F2 representative of an estimate of the beginning of the frame and determining its minimal value corresponding to the beginning of the frame;
- and
- starting the receiver.
A receiver control device for controlling a receiver in a digital communication system designed to process a frame comprising a periodic sub-set having a length n, said receiver control device comprising:
- a detector configured to:
- determine a first vector u having a length n;
- determine a second vector v shifted by a whole number of periods;
- calculate a correlation between said first and second vectors;
- calculate a quadratic error between said first and second vectors;
- calculate a first cost function F1 that is a linear combination of both preceding calculations;
- based on the sign of a result of the first cost function F1, calculate a second cost function F2 for seeking a beginning time of the frame;
- and
- based on the sign of a result of the first cost function F1, start the receiver.
A receiver control device for controlling a receiver in a digital communication system designed to process a frame comprising a periodic sub-set having a length n, the receiver control device being configured to:
- determine a first vector u having a length n;
- determine a second vector v shifted by a whole number of periods;
- calculate a correlation between said first and second vectors;
- calculate a quadratic error between said first and second vectors;
- calculate a first cost function F1 that is a linear combination of both preceding calculations;
- based on the sign of a result of the first cost function F1, calculate a second cost function F2 for seeking a beginning time of the frame;
- and
- based on the sign of a result of the first cost function F1, start the receiver.
Dependencies are inferred from the claim text.