INTERFERENCE CANCELLATION FOR DIVISION FREE DUPLEXING OR FULL DUPLEX OPERATION

摘要

In full duplex operation, a first signal is transmitted from a wireless device while a second signal in the same frequency band as the first signal is received at the device. A third signal can be generated that accounts for channel characteristics on the transmitted first signal. The third signal can be applied to the received second signal to compensate for interference caused by the transmitted first signal.

主权项

1. A device comprising:
a transmit chain operable for receiving an input comprising a digital form of a first signal and for converting the digital form of the first signal into an analog form of the first signal; a receive chain; and a cancellation block coupled to the receive chain and the transmit chain, wherein the transmit chain is further operable for transmitting the analog form of the first signal while a second signal is being received by the receive chain in a frequency band that overlaps a frequency band used for transmitting the first signal, wherein the cancellation block is operable for generating a third signal that accounts for interference between the first signal transmitted by the transmit chain and the second signal received by the receive chain, and wherein the receive chain is operable for applying the third signal to the second signal received by the receive chain to produce a compensated second signal.