Method and system for polar modulating QAM signals with discontinuous phase
View Patent ↗Aspects of a method and system for polar modulating QAM signals with discontinuous phase may include amplifying a signal via a plurality of amplifiers such that a combined gain of the plurality of amplifiers comprises a coarse amplitude gain and an amplitude offset gain. A gain of one or more of the plurality of amplifiers may be adjusted to set the coarse amplitude gain, and a gain of one or more remaining ones of the plurality of amplifiers may be adjusted to set the amplitude offset gain. The setting of the coarse amplitude gain and/or said amplitude offset gain may be adjusted dynamically and/or adaptively. The signal may be generated by phase-modulation of a radio-frequency carrier. The combined gain of the plurality of amplifiers may be controlled based on a desired amplitude modulation. The plurality of amplifiers may be integrated within an integrated circuit (IC) or chip.
1. A method for processing communication signals, the method comprising:
polar-modulating a signal via a plurality of amplifiers, wherein a combined gain of said plurality of amplifiers is an amplitude modulation of said polar-modulating;
adjusting a gain of one or more of said plurality of amplifiers to set a coarse amplitude gain of said amplitude modulation; and
adjusting a gain of one or more of remaining ones of said plurality of amplifiers to set an amplitude offset gain of said amplitude modulation.
2. The method according to claim 1 , comprising dynamically adjusting:
said gain of said one or more of said plurality of amplifiers to set said coarse amplitude gain; and/or
said gain of said one or more remaining ones of said plurality of amplifiers to set said amplitude offset gain.
3. The method according to claim 1 , comprising adaptively adjusting:
said gain of said one or more of said plurality of amplifiers to set said coarse amplitude gain; and/or
said gain of said one or more remaining ones of said plurality of amplifiers to set said amplitude offset gain.
4. The method according to claim 1 , comprising switching said gain of said one or more of said plurality of amplifiers associated with said coarse amplitude gain between unity gain and an arbitrary fixed gain.
5. The method according to claim 1 , wherein said gain of said one or more remaining ones of said plurality of amplifiers associated with said amplitude offset gain is variable and arbitrary.
6. The method according to claim 1 , wherein said gain of said one or remaining ones of said plurality of amplifiers associated with said amplitude offset gain is variable and discrete.
7. The method according to claim 1 , wherein said one or more remaining ones of said plurality of amplifiers associated with said amplitude offset gain comprises one or more analog amplifiers.
8. The method according to claim 1 , comprising generating said signal by phase-modulating a radio-frequency carrier.
9. The method according to claim 1 , comprising controlling said combined gain of said plurality of amplifiers based on a desired amplitude modulation.
10. The method according to claim 1 , wherein an integrated circuit comprises said plurality of amplifiers.
11. A system for processing communication signals, the system comprising:
one or more circuits comprising a plurality of amplifiers, said one or more circuits being operable to:
polar-modulate a signal via a plurality of amplifiers wherein a combined gain of said plurality of amplifiers is an amplitude modulation of said polar-modulation;
adjust a gain of one or more of said plurality of amplifiers to set said coarse amplitude gain; and
adjust a gain of one or more remaining ones of said plurality of amplifiers to set said amplitude offset gain.
12. The system according to claim 11 , wherein said one or more circuits are operable to dynamically adjust:
said gain of said one or more of said plurality of amplifiers to set said coarse amplitude gain; and/or
said gain of said one or more remaining ones of said plurality of amplifiers to set said amplitude offset gain.
13. The system according to claim 11 , wherein said one or more circuits are operable to adaptively adjust:
said gain of said one or more of said plurality of amplifiers to set said coarse amplitude gain; and/or
said gain of said one or more remaining ones of said plurality of amplifiers to set said amplitude offset gain.
14. The system according to claim 11 , wherein said one or more circuits are operable to switch said gain of said one or more of said plurality of amplifiers associated with said coarse amplitude gain between unity gain and an arbitrary fixed gain.
15. The system according to claim 11 , wherein said gain of said one or more remaining ones of said plurality of amplifiers associated with said amplitude offset gain is variable and arbitrary.
16. The system according to claim 11 , wherein said gain of said one or remaining ones of said plurality of amplifiers associated with said amplitude offset gain is variable and discrete.
17. The system according to claim 11 , wherein said one or more remaining ones of said plurality of amplifiers associated with said amplitude offset gain comprises one or more analog amplifiers.
18. The system according to claim 11 , wherein said one or more circuits are operable to generate said signal by phase-modulating a radio-frequency carrier.
19. The system according to claim 11 , wherein said one or more circuits are operable to control said combined gain of said plurality of amplifiers based on a desired amplitude modulation.
20. The system according to claim 11 , wherein an integrated circuit comprises said plurality of amplifiers.