Welcome to the Full-Duplex and Self-Interference Cancellation Emerging Technologies Initiative Website

Full-duplex communications supporting concurrent transmission and reception in a single time/frequency channel has the potential of improving the attainable spectral efficiency and throughput by a factor of two. However, implementing full duplex communications has not been possible due to the large power difference at the receiver between the self-interference, imposed by the device’s own transmission, and the signal of interest received from a remote peer. In a typical cellular or wireless local area arrangement, this power difference can be as high as 70-80 dB or larger. Due to recent advancements in self-interference cancellation (SIC) technologies, that employ analog and digital techniques, full-duplex communications and other technologies are quickly increasing the interest of the academic and industrial research and standardization communities.

The current mission of the emerging technology initiative (ETI) includes promoting of SIC techniques with an emphasis on full-duplex communications for future wireless networks. The scope of the present ETI is to develop SIC and mitigation techniques and to develop technology enablers and associated physical layer and medium access control layer algorithms and radio resource management techniques that facilitate full-duplex communications and SIC techniques in the next generation of wireless systems and, when applicable, in wireline networks.

In many of the technology enablers for future generation of wireless systems, advanced SIC techniques will play a crucial role. These technology enablers and related technical areas that constitute the scope of the ETI include the following:

  • Advanced self-interference cancellation techniques for full-duplex
  • Advanced antenna and transceiver designs for full-duplex
  • Multiple input multiple output full-duplex transceiver design
  • Performance analysis of full-duplex transceivers, systems and networks
  • New full-duplex multiple input multiple output techniques, beamforming and spatial multiplexing for multiuser interference cancellation
  • Non-orthogonal multiple access and full-duplex techniques
  • Physical layer security and full-duplex techniques
  • Full-duplex relaying and cooperative communications
  • Cognitive radio and full-duplex techniques
  • Full-duplex techniques with wireless power and energy harvesting
  • Full-duplex device-to-device and machine-to-machine communications
  • Full-duplex small cell deployments and heterogeneous networks
  • Ultra-reliable low-latency medium access control and routing protocols for full-duplex networks
  • Cross-layer design and virtualization for full-duplex networks
  • Resource allocation, medium access control, and scheduling for full-duplex systems
  • Channel measurements and channel modeling for full-duplex
  • Experimental evaluation of full-duplex transceivers and networks
  • Full-duplex for novel radar applications
  • SIC for military applications
  • SIC for wide-area 5G and 6G wireless systems integrating dynamic time-division duplexing, frequency-division duplexing and full-duplex technologies
  • SIC for integrated access and backhaul link deployments supporting high-mobility scenarios
  • SIC for cellular vehicular-to-anything (V2X) applications that that benefit from full-duplex radar-enabled safety applications
  • SIC for integrated communications and sensing
  • SIC for faster than Nyquist signaling
  • SIC for non-orthogonal multiple access