Variable resolution data conversion in a receiver
A received plurality of signals may be filtered to select an in-band signal and/or an out-of-band. A signal strength of the selected signal(s) may be measured. A resolution of an analog-to-digital converter may be controlled based on the measured signal strength(s). The selected in-band signal may be converted to a digital representation via the analog-to-digital converter. The resolution may be decreased when the strength of the in-band signal is higher, and increased when the strength of the in-band signal is lower. The resolution may be increased when the strength of the out-of-band signal is higher, and decreased when the strength of the out-of-band signal is lower. A signal-to-noise ratio and/or dynamic range of the selected signal(s) may be determined based on the measured signal strength(s), and may be utilized to adjust the resolution of the analog-to-digital converter.
1. A receiver comprising:
a circuit comprising an analog-to-digital converter, said circuit being operable to measure a signal strength of an in-band RF signal;
adjust a resolution of said analog-to-digital converter based on said signal strength of said in-band RF signal;
down convert the in-band RF signal to a down converted signal; and
digitally convert the down converted signal to a baseband digital representation via said analog-to-digital converter.
2. The receiver of claim 1 , wherein said circuit is operable to adjust said resolution lower when said signal strength of said in-band signal RF is higher.
3. The receiver of claim 1 , wherein said circuit is operable to adjust said resolution higher when said signal strength of said in-band RF signal is lower.
4. The receiver of claim 1 , wherein said circuit is operable to amplify said RF in-band signal prior to measuring said signal strength of said in-band RF signal.
5. The receiver of claim 1 , wherein said circuit is operable to:
determine a signal-to-noise ratio of said in-band RF signal based on said signal strength of said in-band RF signal; and
adjust said resolution of said analog-to-digital converter based on said signal-to-noise ratio.
6. The receiver of claim 1 , wherein said circuit is operable to:
determine a dynamic range of said in-band RF signal based on said signal strength of said in-band RF signal; and
adjust said resolution of said analog-to-digital converter based on said dynamic range.
7. A method comprising:
measuring a signal strength of an in-band RF signal;
adjusting a resolution of an analog-to-digital converter based on said signal strength of the in-band RF signal;
down converting the in-band RF signal to a down converted signal; and
digitally converting the in-band RF signal to a digital representation via said analog-to-digital converter.
8. The method of claim 7 further comprising adjusting said resolution lower when said signal strength of said in-band RF signal is higher.
9. The method of claim 7 further comprising adjusting said resolution higher when said signal strength of said in-band RF signal is lower.
10. The method of claim 7 further comprising amplifying said in-band RF signal prior to said measuring.
11. The method of claim 7 further comprising:
determining a signal-to-noise ratio of said in-band RF signal based on said signal strength of said in-band RF signal; and
adjusting said resolution of said analog-to-digital converter based on said signal to-noise ratio.
12. The method of claim 7 further comprising:
determining a dynamic range of said in-band RF signal based on said signal strength of said in-band RF signal; and
adjusting said resolution of said analog-to-digital converter based on said dynamic range.
13. A receiver comprising:
a circuit comprising an analog-to-digital converter, said circuit being operable to:
measure a signal strength of an in-band RF signal;
determine a signal-to-noise ratio of said in-band RF signal;
adjust a resolution of said analog-to-digital converter;
down convert the in-band RF signal to a down converted signal; and
digitally convert said in-band RF signal to a digital representation via said analog-to-digital converter.
14. The receiver of claim 13 , wherein said circuit is operable to adjust said resolution lower when said signal strength of said in-band RF signal is higher.
15. The receiver of claim 13 , wherein said circuit is operable to adjust said resolution higher when said signal strength of said in-band RF signal is lower.
16. The receiver of claim 13 , wherein said circuit is operable to amplify said in-band RF signal prior to measuring said signal strength of said in-band RF signal.
17. The receiver of claim 13 , wherein said circuit is operable to adjust said resolution of said analog-to-digital converter based on said signal-to-noise ratio.
18. The receiver of claim 13 , wherein said circuit is operable to:
determine a dynamic range of said in-band RF signal based on said signal strength of said in-band RF signal; and
adjust said resolution of said analog-to-digital converter based on said dynamic range.
19. A receiver comprising:
a circuit comprising an analog-to-digital converter, said circuit being operable to:
measure a signal strength of a selected in-band signal;
adjust a resolution of said analog-to-digital converter based on said signal strength of said in-band signal;
convert said selected in-band signal digitally convert the down converted signal to a digital representation via said analog-to-digital converter;
determine a signal-to-noise ratio of said selected in-band signal based on said signal strength of said in-band signal; and
adjust said resolution of said analog-to-digital converter based on said signal-to-noise ratio.
20. A method comprising:
measuring a signal strength of a selected in-band signal;
adjusting a resolution of an analog-to-digital converter based on said signal strength;
converting said selected in-band signal to a digital representation via said analog-to-digital converter;
determining a signal-to-noise ratio of said selected in-band signal based on said signal strength of said in-band signal; and
adjusting said resolution of said analog-to-digital converter based on said signal to-noise ratio.
21. A receiver comprising:
a circuit comprising an analog-to-digital converter, said circuit being operable to:
measure a signal strength of a selected in-band signal;
determine a signal-to-noise ratio of said selected in-band signal;
adjust a resolution of said analog-to-digital converter;
convert said selected in-band signal to a digital representation via said analog-to-digital converter,
wherein said circuit is operable to adjust said resolution of said analog-to-digital converter based on said signal-to-noise ratio.