  New chaos-based communication schemes for transmission of analog and digital
information are suggested. The carrier signal is produced by chaotic generator
having well-defined oscillation phases at least on short time intervals. For
data extraction, a special procedure of phase detection for chaotic signals is
developed. An efficiency of the scheme is demonstrated by examples of coupled
generators of structurally stable (robust) chaos with hyperbolic attractors of
Smale-Williams and Arnold's "cat map" types. Robustness of the transmitter and
the receiver makes it possible to transmit information in presence of parameter
mismatch or additive noise in the communication channel.
