Conjugate Coding
Original paper: Conjugate coding. Stephen Wiesner. 1983
This paper is the first to present conjugate coding, a scheme where we use orthogonal basis to transmit two messages either but not both of which a recipient may receive.
References
Stephen Wiesner. 1983. “Conjugate coding.” https://dl.acm.org/doi/10.1145/1008908.1008920.