Systems and methods for tracking communication parameters over a plurality of frequency bands

1. A communication system, comprising:

a receiver having a local oscillator (LO) for each of a plurality of frequency bands, each LO being controlled by a separate phase-locked loop (PLL) that tracks carrier frequency offset (CFO) using a common phase error (CPE),

wherein the CPE is selectively weighted based on at least one inter-band frequency correlation (IFC) coefficient.

2. The communication system of claim 1 wherein the at least one IFC coefficient comprises a matrix.

3. The communication system of claim 1 wherein the at least one IFC coefficient varies based on data rate.

4. The communication system of claim 1 wherein the at least one IFC coefficient varies based on a hop sequence.

5. The communication system of claim 1 wherein the at least one IFC coefficient varies based on noise levels for the plurality of frequency bands.

6. The communication system of claim 1 wherein the at least one IFC coefficient varies based on signal-to-noise ratio (SNR) levels for the plurality of frequency bands.

7. The communication system of claim 1 wherein the receiver further comprises,

Fast Fourier Transform (FFT) logic;

a time domain rotator before the FFT logic that adjusts a carrier frequency offset (CFO) to avoid inter-carrier interference (ICI); and

a frequency domain rotator after the FFT logic that facilitates convergence of CPE estimates tracked by the PLLs.

8. The communication system of claim 7 wherein a time domain frequency correction is applied before the frequency domain rotator.

9. The communication system of claim 1 wherein the receiver comprises a sampling frequency offset (SFO) loop that averages the SFO over a configurable number of symbols before a sampling frequency correction based on the averaged SFO is performed.

10. A method, comprising:

tracking a carrier frequency offset (CFO) based on a common phase error (CPE) for each of a plurality of frequency bands; and

selectively weighting the CPE based on at least one inter-band frequency correlation (IFC) coefficient.

11. The method of claim 10 wherein weighting the CPE based on at least one IFC coefficient comprises performing a matrix multiplication.

12. The method of claim 10 further comprising varying the at least one IFC coefficient based on data rate.

13. The method of claim 10 further comprising varying the at least one IFC coefficient based on a hop sequence.

14. The method of claim 10 further comprising varying the at least one IFC coefficient based on noise levels for the plurality of frequency bands.

15. The method of claim 10 further comprising varying the at least one IFC coefficient based on signal-to-noise ratio (SNR) levels for the plurality of frequency bands.

16. The method of claim 10 further comprising,

performing a time domain rotation that adjusts the CFO to avoid inter-carrier interference (ICI); and

performing a frequency domain rotation that facilitates convergence of CFO estimates being tracked.

17. The method of claim 16 further comprising applying a time domain frequency correction before performing the frequency domain rotation.

18. The method of claim 10 further comprising averaging a sampling frequency offset (SFO) over a configurable number of symbols and correcting a sampling frequency based on the averaged SFO.

19. An Ultra-Wideband (UWB) network, comprising:

a first device; and

a second device,

wherein at least one of the first and second devices implements selectively correlated phase-locked loops (PLLs) to track a carrier frequency offset (CFO) over a plurality of frequency bands and

a time domain rotator that adjusts the CFO to avoid inter-carrier interference (ICI) and a frequency domain rotator that facilitates convergence of CFO estimates tracked by the PLLs.