Information Theoretic Approach for Waveform Design in Coexisting MIMO Radar and MIMO Communications

We investigate waveform design for coexistence between a multipleinput
multiple-output (MIMO) radar and MIMO communications
(MRMC), with a radar-centric criterion that leads to a minimal
interference in the communications system. The communications
use the traditional mode of operation in Long Term Evolution
(LTE)/Advanced (FDD), where we formulate the design problem
based on information-theoretic criterion with the discrete phase
constraint at the design stage. The optimization problem, is nonconvex,
multi-objective and multi-variable, where we propose an
efficient algorithm based on the coordinate descent (CD) framework
to simultaneously improve radar target detection performance and
the communications rate. The numerical results indicate the effectiveness
of the proposed algorithm in designing discrete phase set of
sequences, potentially binary.