Transceiver architecture with combined smart antenna calibration and digital predistortion

1. A method for digital predistortion, comprising:

executing a first distortion observation of a first signal from a first transmitter of a smart antenna array with a multipurpose calibration transceiver;

digitally predistorting the first signal based upon the first distortion observation;

executing a second distortion observation of a second signal from a second transmitter of the smart antenna array with the multipurpose calibration transceiver;

digitally predistorting the second signal based upon the second distortion observation;

executing a first calibration observation of the first signal and a second calibration observation of the second signal, wherein the calibration observation comprises observing gain and phase differences over transmit and receive paths; and

switching, by the multipurpose calibration transceiver, between the first distortion observation, the second distortion observation, the first calibration observation, and the second calibration observation.

2. The method of claim 1 , further comprising:

executing the first calibration observation of the first signal and the second calibration observation of the second signal with the multipurpose calibration transceiver; and

calibrating the first transmitter and the second transmitter.

3. The method of claim 1 , further comprising:

executing a third distortion observation of a third signal from a third transmitter of the smart antenna array with the multipurpose calibration transceiver;

digital predistorting the third signal based upon the third observation.

4. The method of claim 1 , wherein the first signal and the second signal are time division duplexing signals.

5. The method of claim 1 , wherein the first signal and the second signal are frequency division duplexing signals.

6. The method of claim 1 , wherein the first signal and the second signal are transmitted using at least one of a long term evolution standard or a WiMax® standard.

7. A telecommunications apparatus using digital predistortion, comprising:

a first transmitter that sends a first signal;

a second transmitter that sends a second signal; and

a multipurpose calibration transceiver that executes a first distortion observation of the first signal to be a basis for a first digital predistortion on the first signal and executes a second distortion observation of the second signal to be a basis for a second digital predistortion on the second signal,

wherein the multipurpose calibration transceiver executes a first calibration observation of the first signal and a second calibration observation of the second signal,

wherein the calibration observation comprises observing gain and phase differences over transmit and receive paths,

wherein the multipurpose calibration transceiver switches between the first distortion observation, the second distortion observation, the first calibration observation, and the second calibration observation.

8. The telecommunications apparatus of claim 7 , wherein the multipurpose calibration transceiver executes the first calibration observation of the first signal and the second calibration observation of the second signal to calibrate the first transmitter and the second transmitter.

9. The telecommunications apparatus of claim 7 , further comprising:

a third transmitter to transmit a third signal, the third signal digitially predistorted based upon a third distortion observation of the third signal by the multipurpose calibration transceiver.

10. The telecommunications apparatus of claim 7 , wherein the first signal and the second signal are time division duplexing signals.

11. The telecommunications apparatus of claim 7 , wherein the first signal and the second signal are frequency division duplexing signals.

12. The telecommunications apparatus of claim 7 , wherein the first signal and the second signal are transmitted following at least one of a long term evolution standard or a WiMax standard.

13. An electronic device using digital predistortion, comprising:

a first transmitter of a smart antenna array that sends a first signal;

a second transmitter of the smart antenna array that sends a second signal;

a multipurpose calibration transceiver that executes a first distortion observation of the first signal to be a basis for a first digital predistortion on the first signal and executes a second distortion observation of the second signal to be a basis for a second digital predistortion on the second signal,

wherein the multipurpose calibration transceiver executes a first calibration observation of the first signal and a second calibration observation of the second signal,

wherein the calibration observation comprises observing gain and phase differences over transmit and receive paths,

wherein the multipurpose calibration transceiver switches between the first distortion observation, the second distortion observation, the first calibration observation, and the second calibration observation.

14. The electronic device of claim 13 , wherein the multipurpose calibration transceiver executes the first calibration observation of the first signal and the second calibration observation of the second signal to calibrate the first transmitter and the second transmitter.

15. The electronic device of claim 13 , further comprising:

a third transmitter of the smart antenna array to transmit a third signal, the third signal digitally predistorted based upon a third distortion observation of the third signal by the multipurpose calibration transceiver.

16. The electronic device of claim 13 , wherein the first signal and the second signal are time division duplexing signals.

17. The electronic device of claim 13 , wherein the first signal and the second signal are frequency division duplexing signals.

18. The electronic device of claim 13 , wherein the first signal and the second signal are transmitted following at least one of a long term evolution standard or a WiMax® standard.