  Diffuse, multiple-scattered waves can be very efficient for information
transfer through disordered media, provided that antenna arrays are used for
both transmission and reception of signals. Information capacity C of a
communication channel between two identical linear arrays of n equally-spaced
antennas, placed in a disordered medium with diffuse scattering, grows linearly
with n and can attain considerable values, if antenna spacing a > lambda/2,
where lambda is the wavelength. Decrease of a below lambda/2 makes the signals
received by different antennas partially correlated, thus introducing
redundancy and reducing capacity of the communication system. When the size of
antenna arrays is well below lambda/2, the scaling of C with n becomes
logarithmic and capacity is low.
