Fig. 3From: Physical-Layer-Security Box: a concept for time-frequency channel-reciprocity key generationSequence of messages between Alice and Bob to perform time-frequency filter-bank CRKG. The x(t), yA(t), yB(t), hAB(t), and hBA(t) are described in Eq. (3), where A means Alice and B means Bob. The C is the set of M filter-bank outputs described in Eqs. (6) and (7)Back to article page