Covariance matrix design of transmit waveform for MIMO dual-function
radar-communication system
Abstract
The multiple-input multiple-output (MIMO) dual-function
radar-communication system can adjust the sidelobe level (SLL) by
transmit beamforming to realize the communication function in the
line-of-sight channel. However, a high SLL of the transmit beampattern
can affect target detection performance. We propose a low-sidelobe
covariance matrix design of transmit waveform method to address this
issue. Minimizing the integrated sidelobe level is taken as the
objective function with the constraint of the mainlobe lower and upper
bounds. The optimal global solution can be obtained by the interior
point algorithm since the objective function is semi-definite
programming. Finally, the simulation results verify the performance in
transmit beampattern and bit error rate.