Two-Way Traffic Ahead: RF\/Analog Self-Interference Cancellation Techniques and the Challenges for Future Integrated Full-Duplex Transceivers

Integration of discrete radios onto a single-silicon CMOS substrate [1]-[6], followed by commercialization of single-chip cellular, Bluetooth, and Wi-Fi radios [7]-[9], has shaped the wireless world that we live in today. Although integration of wireless transceivers with powerful microprocessors in very large systems on chip (SoCs) is currently commonplace in consumer electronics, the demand for lower power consumption, higher effective data rates, and higher network capacity continues to drive research on integrated radios. By some estimates, the demand for mobile data per volume area will increase 1,000x during the next decade, with end-user data rates increasing by as much as 10-100x [10].