Signal Processing for 5G: Algorithms and Implementations

Chapter 17Design and Implementation of Full-duplex Transceivers

Katsuyuki Haneda, Mikko Valkama, Taneli Riihonen, Emilio Antonio-Rodriguez and Dani Korpi

1. 17.1 Research Challenges
   1. 17.1.1 Passive Isolation and Active Cancellation
   2. 17.1.2 RF Imperfections
2. 17.2 Antenna Designs
3. 17.3 RF Self-interference Cancellation Methods
4. 17.4 Digital Self-interference Cancellation Algorithms
   1. 17.4.1 Signal Model
   2. 17.4.2 Basic Principles
   3. 17.4.3 Spatial Suppression
   4. 17.4.4 Linear Cancellation
   5. 17.4.5 Nonlinear Cancellation
   6. 17.4.6 Adaptive vs Block-based Processing
5. 17.5 Demonstration
6. 17.6 Summary
7. Acknowledgements
8. References

The upcoming 5G radio communication systems will be required to achieve as much as a thousand-fold throughput increase over current 4G systems. The increase is a huge challenge that needs to be addressed through different physical layer techniques such as the use of a massive number of antennas and of use of the centimeter- and millimeter-wave spectrum, among others. Still, it is likely that additional and more sophisticated transceiver technologies are required to increase the throughput further, and a technique that overlays these physical-layer techniques is required. In-band full-duplex technology can be complementary to other techniques and double the spectral efficiency [1], allowing the 5G networks to reach their full potential.

An in-band full-duplex-capable transceiver is able to transmit and receive simultaneously over the same center frequency [1]. With this definition, ...