Self-Interference Cancellation Techniques in Frequency-Division-Duplex (FDD) and Full-Duplex (FD) Receivers

The continued demand for higher levels of access and increased data rates continues to drive research towards increasing bandwidth, reducing form factor, and lowering costs. Frequency-Division-Duplex (FDD) / Full-Duplex (FD) communication would improve the spectral efficiency by allowing the transmitter and receiver to operate simultaneously. However, to enable FDD/FD communication, new hardware front-end solutions must minimize the interference to the receiver from its own transmitter. This talk will discuss highly integrated single-chip hardware solutions which minimize the transmit-to-receive self-interference using several cancellation methods and discuss the critical design tradeoffs of each technique.