Energy Efficient Receiver-End Distributed Beamforming Using Orthogonal Transmissions

A novel orthogonal transmission based receiver-end distributed beamforming (DBF) scheme,
Rx-DBF
is proposed, for information transfer without receiver feedback. It is proven to achieve near-perfect DBF gain and is channel fading agnostic. Exploiting the correlation in beamformed output, a
sporadic receiver feedback scheme
is also introduced, which prolongs the duration of DBF gain to aid information or power transfer. The proposed schemes are demonstrated to be more energy efficient compared to the closest competitive approaches in the literature.