Achievable Rates for Full-Duplex Wireless Communication

(A)symmetric interference levels

Bi-directional communication within the same channel. Inevitable loopback interference signal (red arrow) must be suppressed.

What is full-duplex communication?

A full-duplex communication is defined as the capability to transmit and receive at both same time and same frequency. Using the same resource for transmitting and receiving is advantageous in various aspects (e.g., resource efficiency, access layer functionality, round trip time), nonetheless, it has been considered as infeasible due to the strong loopback interference. Recently, applying specialized cancellation techniques has brought acceptable level of isolation between the two directions of communication and hence encouraged further research in this area.

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Omid Taghizadeh