Avoiding frequency spikes in modulated systems
AssigneeMarvell International Ltd.
InventorsLuca Vercesi, Fernando De Bernardinis
Life of this patent
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Abstract
Embodiments of the present disclosure provide system and method for generating a transmission signal. A transmitter generates and transmits a transmission signal based on signal components. Circuitry that is coupled to the transmitter receives complex plane components of a signal to be transmitted and alters the signal such that a complex plane trajectory of the signal passes nearer to an origin of a complex plane of the complex plane trajectory than does an original complex plane trajectory of the signal. The circuitry determines the signal components to be transmitted by the transmitter based on the altered signal.
Claims16
A system comprising:
- a transmitter configured to generate and transmit a transmission signal based on signal components;
- and
- a circuitry coupled to the transmitter, wherein the circuitry is configured to:
- (i) receive complex plane components of a signal to be transmitted;
- (ii) alter the signal such that a complex plane trajectory of the signal passes nearer to an origin of a complex plane of the complex plane trajectory than does an original complex plane trajectory of the signal;
- (iii) determine the signal components based on the altered signal;
- and
- (iv) output an inversion signal to the transmitter at a point in time that corresponds to the altered signal passing nearer to the origin,
- wherein the transmitter is further configured to invert an amplitude of the transmission signal based on the inversion signal.
A method, comprising:
- receiving complex plane components of a signal;
- altering the signal such that a complex plane trajectory of the signal passes nearer to an origin of a complex plane of the complex plane trajectory;
- outputting signal components of the altered signal to a transmitter;
- and
- outputting an inversion signal to the transmitter at a time that corresponds to a complex plane trajectory of the altered signal passing nearer to the origin of the complex plane.
Dependencies are inferred from the claim text.