Interference mitigation by a scalable digital wireless modem
First Claim
Patent Images
1. A method of interference mitigation, the method comprising:
- transmitting data packets by a wireless fidelity (Wi-Fi) modem;
detecting presence of an active or an inactive cellular modem operation;
adjusting an emission level of the Wi-Fi modem to operate at a high power or a lower power consumption mode during the detected active or inactive cellular modem operation, respectively, the adjusting of the emission level of the Wi-Fi modem further comprises;
performing inverse fast fourier transform (IFFT) of an input signal to generate a time domain—
input signal;
interpolating the time domain—
input signal;
limiting a frequency deviation of the interpolated input signal;
controlling a streaming of the limited interpolated input signal based on the detected active or inactive cellular modem operation, wherein a plurality of parallel connected—
coordinate rotation digital computer (CORDIC) components operate at a high power consumption mode during the detected active cellular modem operation by turning ON each of the plurality of parallel connected—
CORDIC components;
clipping the streamed interpolated signal from the parallel connected—
CORDIC components;
sampling the clipped streamed interpolated signal; and
converting the sampled interpolated signal into a serial signal, wherein the serial signal amplitude modulates a phase modulated signal in a digital power amplifier (PA) prior to transmission of the data packets.
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Abstract
Described herein are technologies related to an implementation for dynamic adjustment of an out-of-band emission in a wireless modem, including spurious emissions, such as a Wi-FI modem, to minimize interference on a collocated or co-running downlink reception of another wireless modem residing on the same device by dynamically adjustment of a power consumption.
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Citations
21 Claims
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1. A method of interference mitigation, the method comprising:
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transmitting data packets by a wireless fidelity (Wi-Fi) modem; detecting presence of an active or an inactive cellular modem operation; adjusting an emission level of the Wi-Fi modem to operate at a high power or a lower power consumption mode during the detected active or inactive cellular modem operation, respectively, the adjusting of the emission level of the Wi-Fi modem further comprises; performing inverse fast fourier transform (IFFT) of an input signal to generate a time domain—
input signal;interpolating the time domain—
input signal;limiting a frequency deviation of the interpolated input signal; controlling a streaming of the limited interpolated input signal based on the detected active or inactive cellular modem operation, wherein a plurality of parallel connected—
coordinate rotation digital computer (CORDIC) components operate at a high power consumption mode during the detected active cellular modem operation by turning ON each of the plurality of parallel connected—
CORDIC components;clipping the streamed interpolated signal from the parallel connected—
CORDIC components;sampling the clipped streamed interpolated signal; and converting the sampled interpolated signal into a serial signal, wherein the serial signal amplitude modulates a phase modulated signal in a digital power amplifier (PA) prior to transmission of the data packets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device comprising:
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a digital wireless modem configured to transmit wireless fidelity (Wi-Fi) data packets, wherein the digital wireless modem is configured to control an emission level of the transmitted data packets based on a detected active or inactive transmission by a collocated cellular modem; a detector component coupled to the wireless modem, wherein the detector is configured to detect the active or inactive transmission by the cellular modem; a programmable chain component disposed within the digital wireless modem, the programmable chain component comprises; a plurality of parallel connected—
coordinate rotation digital computer (CORDIC) components configured to control streaming of soft limited interpolated input signal based on the detected active or inactive transmission by the cellular modem, wherein the plurality of parallel connected—
CORDIC components operate at high power consumption mode during the detected active transmission by turning ON each of the plurality of parallel connected—
CORDIC components. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A device comprising:
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a transmitter modem; a detector configured to detect an active or an inactive transmission by the transmission modem; a wireless fidelity (Wi-Fi) modem configured to operate at a high power or a lower power consumption mode during the detected active or inactive transmission, respectively, the Wi-Fi modem further comprises; an inverse fast fourier transform (IFFT) component configured to transform a frequency domain input signal into a time domain input signal; a configurable interpolator configured to interpolate time domain—
input signal;a frequency soft limiter configured to limit frequency deviation of the interpolated input signal; a plurality of parallel connected—
coordinate rotation digital computer (CORDIC) components configured to control streaming of the soft limited interpolated input signal based on the detected active or inactive transmission by the transmitter modem, wherein the plurality of parallel CORDIC components operate at high power consumption mode during the active transmission by turning ON multiple CORDIC component in the plurality of parallel CORDIC components;a frequency hard limiter configured to perform hard limiting or clipping of the streamed interpolated input signal from the plurality of parallel connected—
CORDIC components; anda fractional sampling rate converter (FSRC) configured to sample the hard limited interpolated input signal to another sampling rate, wherein the new sampling rate comprises data streams utilized to amplitude modulate a phase modulated signal at the transmitter mode. - View Dependent Claims (19, 20, 21)
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Specification