Patent attributes
In a busy 5G/6G wireless network, message collisions may occur in which an “intruder” signal is transmitted at the same time as a “subject” message, rendering one or more of the subject message elements distorted. Modulation schemes are disclosed in which the corrupted message elements may be recovered, without requesting a retransmission. The modulation states have the property that, if two of the modulation states are combined by superposition, the resulting signal does not resemble any of the modulation states. Hence the receiver can determine, from the received signal, which message elements are collided, and can also identify the original modulation state of the subject message element in many cases. By replacing the collided message elements with the originally intended modulation state, the receiver may demodulate the subject message correctly while avoiding the delays and costs involved in requesting a retransmission, according to some embodiments.
