Transmit spur detection and mitigation for wireless communications devices

1. A method comprising:

beginning transmission of a portion of a data packet from a baseband layer of a wireless communications device;

determining an estimated magnitude and an estimated phase for each of a plurality of portions of the data packet stored as a plurality of bins;

generating a spur canceling signal based on a spur signal at identified spur frequencies of a frequency band used for the transmission, the generating being further based on the estimated magnitude and the estimated phase for the plurality of portions of the data packet;

subtracting the spur canceling signal from the transmission of the portion of the data packet; and

generating a transmitted signal based on the subtracting such that the spur canceling signal is subtracted during the transmission of the portion of the data packet.

2. The method of claim 1 further comprising:

dividing the transmission into the plurality of bins to generate the plurality of portions; and

determining an estimated magnitude and an estimated phase for each of the plurality of bins.

3. The method of claim 2 further comprising:

averaging a magnitude across the plurality of bins; and

estimating a slope of a change in phase across the plurality of bins.

4. The method of claim 3 , wherein the estimating of the slope comprises:

determining a change in phase between adjacent bins across the plurality of bins.

5. The method of claim 1 , wherein the estimated magnitude and the estimated phase are determined prior to the beginning of the transmission.

6. The method of claim 1 , wherein the subtracting further comprises:

combining the spur canceling signal with the transmission of the portion of the data packet.

7. The method of claim 1 further comprising:

identifying a type of spur frequency.

8. The method of claim 7 , wherein the identifying a type further comprises:

generating the spur canceling signal based on the identified type of spur frequency.

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

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:

begin transmission of a portion of a data packet from a baseband layer;

determine an estimated magnitude and an estimated phase for each of a plurality of portions of the data packet stored as a plurality of bins;

generate a spur canceling signal based on a spur signal at identified spur frequencies of a frequency band used for the transmission, the generating being further based on the estimated magnitude and the estimated phase for the plurality of portions of the data packet;

subtract the spur canceling signal from the transmission of the portion of the data packet; and

generate a transmitted signal based on the subtracting such that the spur canceling signal is subtracted during the transmission of the portion of the data packet.

11. The system of claim 10 , wherein the one or more processors are further configured to:

divide the transmission into the plurality of bins to generate the plurality of portions; and

determine an estimated magnitude and an estimated phase for each of the plurality of bins.

12. The system of claim 11 , wherein the one or more processors are further configured to:

average a magnitude across the plurality of bins; and

estimate a slope of a change in phase across the plurality of bins.

13. The system of claim 12 , wherein the one or more processors are further configured to:

determine a change in phase between adjacent bins across the plurality of bins.

14. The system of claim 10 , wherein the estimated magnitude and the estimated phase are determined prior to the beginning of the transmission.

15. The system of claim 10 further comprising:

a signal combiner configured to combine the spur canceling signal with the transmission of the portion of the data packet.

16. 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:

beginning transmission of a portion of a data packet from a baseband layer of a wireless communications device;

determining an estimated magnitude and an estimated phase for each of a plurality of portions of the data packet stored as a plurality of bins;

generating a spur canceling signal based on a spur signal at identified spur frequencies of a frequency band used for the transmission, the generating being further based on the estimated magnitude and the estimated phase for the plurality of portions of the data packet;

subtracting the spur canceling signal from the transmission of the portion of the data packet; and

generating a transmitted signal based on the subtracting such that the spur canceling signal is subtracted during the transmission of the portion of the data packet.

17. The computer program product recited in claim 16 , wherein the method further comprises:

dividing the transmission into the plurality of bins to generate the plurality of portions; and

determining an estimated magnitude and an estimated phase for each of the plurality of bins.

18. The computer program product recited in claim 17 , wherein the method further comprises:

averaging a magnitude across the plurality of bins; and

estimating a slope of a change in phase across the plurality of bins.

19. The computer program product recited in claim 16 , wherein the method further comprises:

identifying a type of spur frequency; and

generating the spur canceling signal based on the identified type of spur frequency.

20. The computer program product recited in claim 16 , wherein the wireless communications device is compatible with a Bluetooth transmission protocol.