System and Method for Multiple-Input and Multiple-Output (MIMO) Full-Duplex Precoding Algorithms

摘要

Embodiments are provided to enable effective cancellation or reduction of the self-interference (SI) introduced when applying full-duplex transmission to MIMO systems. A method embodiment includes forming, using a first component matrix of a precoding matrix generated in accordance with signal channel conditions, a plurality of beams for a plurality of transmit signals, and forming, using a second component matrix of the precoding matrix, a plurality of SI cancellation signals corresponding to the transmit signals. The first component matrix is arranged to maximize a sum-rate of transmissions in the transmit signals assuming zero SI in the network component. The second component matrix is arranged to maximize SI suppression in a plurality of receive signals in the network component. The beams are transmitted at a plurality of antennas, also used to receive the receive signals. The SI cancellation signals are added to the receive signals to detect corrected receive signals.

主权项

1. A method performed by a network component for full-duplex communications in a Multiple-Input and Multiple-Output (MIMO) system, the method comprising:
generating, at a precoder, a full-duplex (FD) precoding (FDP) matrix in accordance with signal channel conditions, wherein the FDP matrix comprises a first component matrix for precoding a plurality of transmit signals and a second component matrix for precoding a plurality of self-interference (SI) cancellation signals; calculating the first component matrix in accordance with an objective sum-rate for the transmit signals; calculating the second component matrix in accordance with an objective to mitigate SI in a plurality of receive signals at the network component; generating, at the precoder, the transmit signals and the SI cancellation signals using the FDP matrix; and adding the SI cancellation signals to the receive signals.