Transmit spur detection and mitigation for wireless communications devices

1. A method comprising:

transmitting a baseband training signal via a transmit path of a wireless communications device;

obtaining a plurality of samples of the baseband training signal via a receive path of the wireless communications device;

generating a plurality of weighted averages based on the plurality of samples; and

generating an estimated amplitude and an estimated phase for at least one spur frequency of the wireless communications device based, at least in part, on the plurality of weighted averages,

wherein the generating of the plurality of weighted averages further comprises:

dividing the plurality of samples into a plurality of bins, and

determining a weighted average for each of the plurality of bins; and

wherein each weighted average is weighted based, at least in part, on an estimated error associated with an associated bin.

2. The method of claim 1 , wherein the baseband training signal comprises an arbitrary waveform.

3. The method of claim 1 , wherein the baseband training signal is transmitted from a physical layer of the wireless communications device.

4. The method of claim 1 , wherein the generating of the plurality of weighted averages further comprises:

dividing the plurality of samples into a plurality of bins; and

determining a weighted average for each of the plurality of bins.

5. The method of claim 4 , wherein each weighted average is weighted based, at least in part, on an estimated error associated with an associated bin.

6. The method of claim 1 , wherein the estimated amplitude and estimated phase are generated by a first correlator and a second correlator, wherein the first and second correlators are different.

7. The method of claim 6 , wherein the first correlator and the second correlator generate the estimated amplitude and estimated phase based on a using a first reference signal and a second reference signal, wherein the first and second reference signals are different.

8. The method of claim 1 , wherein the wireless communications device is compatible with a Bluetooth transmission protocol.

9. The method of claim 1 further comprising:

identifying a type of spur frequency present; and

identifying one or more mitigation operations based on the identified type of spur frequency.

10. A system comprising:

a transceiver configured to transmit and receive data based on one or more wireless communications protocols; and

a processing device comprising one or more processors configured to:

transmit a baseband training signal via a transmit path of a wireless communications device;

obtain a plurality of samples of the baseband training signal via a receive path of the wireless communications device;

generate a plurality of weighted averages based on the plurality of samples; and

generate an estimated amplitude and an estimated phase for at least one spur frequency of the wireless communications device based, at least in part, on the plurality of weighted averages,

wherein the estimated amplitude and estimated phase are generated by a first correlator and a second correlator, and wherein the first correlator and the second correlator are configured to generate the estimated amplitude and estimated phase based on a using a first reference signal and a second reference signal, wherein the first and second correlators are different and the first and second reference signals are different.

11. The system of claim 10 , wherein the baseband training signal is transmitted from a physical layer of the wireless communications device.

12. The system of claim 10 , wherein the processing device is further configured to:

divide the plurality of samples into a plurality of bins; and

determine a weighted average for each of the plurality of bins.

13. The system of claim 12 , wherein each weighted average is weighted based, at least in part, on an estimated error associated with an associated bin.

14. The system of claim 10 wherein the processing device is further configured to:

identify a type of spur frequency present; and

identify one or more mitigation operations based on the identified type of spur frequency.

15. A computer program product comprising non-transitory computer-readable program code capable of being executed by one or more processors when retrieved from a non-transitory computer-readable medium, the program code comprising instructions configurable to cause the one or more processors to perform a method comprising:

transmitting a baseband training signal via a transmit path of a wireless communications device;

obtaining a plurality of samples of the baseband training signal via a receive path of the wireless communications device;

generating a plurality of weighted averages based on the plurality of samples; and

generating an estimated amplitude and an estimated phase for at least one spur frequency of the wireless communications device based, at least in part, on the plurality of weighted averages,

wherein each weighted average is weighted based, at least in part, on an estimated error associated with an associated bin.

16. The computer program product recited in claim 15 , wherein the baseband training signal is transmitted from a physical layer of the wireless communications device.

17. The computer program product recited in claim 15 , wherein the generating of the plurality of weighted averages further comprises:

dividing the plurality of samples into a plurality of bins; and

determining a weighted average for each of the plurality of bins.

18. The computer program product recited in claim 15 , wherein the method further comprises:

identifying a type of spur frequency present; and

identifying one or more mitigation operations based on the identified type of spur frequency.