Transmit spur detection and mitigation for wireless communications devices
AssigneeCypress Semiconductor Corporation
InventorsSuprojit Mukherjee, Ayush Sood
Life of this patent
Estimating the term…
Abstract
Systems, methods, and devices reduce and mitigate spurs that may occur in transmit waveforms of wireless communications devices. Methods include beginning transmission of a portion of a data packet from a baseband layer of a wireless communications device, and generating a spur canceling signal based on an estimated magnitude and an estimated phase of a spur signal at identified spur frequencies of a frequency band used for the transmission. Methods also include 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.
Claims20
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.
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.
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.
Dependencies are inferred from the claim text.