  In this article, we consider remote-controlled systems, where the command
generator and the controlled object are connected with a bandwidth-limited
communication link. In the remote-controlled systems, efficient representation
of control commands is one of the crucial issues because of the bandwidth
limitations of the link. We propose a new representation method for control
commands based on compressed sensing. In the proposed method, compressed
sensing reduces the number of bits in each control signal by representing it as
a sparse vector. The compressed sensing problem is solved by an L1-L2
optimization, which can be effectively implemented with an iterative shrinkage
algorithm. A design example also shows the effectiveness of the proposed
method.
