Interference canceling for mobile devices
AssigneeSony Corporation
InventorsRickard Ljung, Olof Zander
Life of this patent
Estimating the term…
Abstract
A user-device implemented method includes encoding a first digital signal to generate a first digital baseband signal and modulate the first digital baseband signal to generate one or more RF signals corresponding to one or more frequency bands. The one or more RF signals are transmitted via one or more antennas. Substantially simultaneously with the transmission of the one or more RF signals, a second one or more RF signals is received via the one or more antennas. The second one or more RF signals are demodulated to generate a second digital baseband signal. The first digital baseband signal is subtracted from the second digital baseband signal to generate a modified second digital baseband signal.
Claims20
A user device comprising:
- a communication interface;
- and
- one or more processors,
- wherein the communication interface is configured to:
- receive, from the one or more processors, a transmit digital signal for transmission as one or more radio frequency (RF) signals;
- encode the transmit digital signal to generate a transmit digital baseband signal;
- modulate the transmit digital baseband signal to generate the one or more RF signals;
- transmit, by a transmitter, the one or more RF signals via one or more antennas;
- receive, by a receiver, and substantially simultaneously with the transmission of the one or more RF signals, a second one or more RF signals via the one or more antennas,
- wherein the second one or more RF signals are in a carrier frequency band different from a carrier frequency band that includes the one or more RF signals;
- demodulate the second one or more RF signals to generate a receive digital baseband signal;
- subtract, by an interference canceling unit, following demodulation of the second one or more RF signals, potentially interfering effects of the one or more RF signals based on the transmit digital baseband signal from the receive digital baseband signal to generate a modified receive digital baseband signal;
- decode the modified receive digital baseband signal to generate a decoded receive digital signal;
- and
- forward the decoded receive digital signal to the one or more processors.
A mobile communication device-implemented method, comprising:
- encoding a first digital signal to generate a first digital baseband signal;
- modulating the first digital baseband signal to generate one or more RF signals corresponding to one or more frequency bands;
- transmitting the one or more RF signals via one or more antennas;
- receiving, substantially simultaneously with the transmitting of the one or more RF signals, a second one or more RF signals via the one or more antennas,
- wherein the second one or more RF signals are in a carrier frequency band different from a carrier frequency band that includes the one or more RF signals;
- demodulating the second one or more RF signals to generate a second digital baseband signal;
- and
- subtracting potentially interfering effects of the one or more RF signals based on the first digital baseband signal from the second digital baseband signal to generate a modified second digital baseband signal.
A non-transitory computer-readable medium containing instructions executable by at least one processor, for causing the at least one processor to:
- encode a first digital signal to generate a first digital baseband signal;
- modulate the first digital baseband signal to generate one or more RF signals corresponding to one or more frequency bands;
- transmit the one or more RF signals via one or more antennas;
- receive, substantially simultaneously with the transmission of the one or more RF signals, a second one or more RF signals via the one or more antennas,
- wherein the second one or more RF signals are in a carrier frequency band different from a carrier frequency band that includes the one or more RF signals;
- demodulate the second one or more RF signals to generate a second digital baseband signal;
- and
- subtract potentially interfering effects of the one or more RF signals based on the first digital baseband signal from the second digital baseband signal to generate a modified second digital baseband signal.
Dependencies are inferred from the claim text.