Performance Trade-off Analysis of Co-design of Radar and Phase Modulated Communication Signals in Frequency Hopping MIMO Systems

摘要

We present a dual-function radar communication (DFRC) system in which phase modulated information sym-bols are embedded in the multiple-input multiple-output (MIMO) frequency hopping (FH) radar sub-pulses infast-time. The communications is considered as the secondary function of the proposed dual-function radarcommunication (DFRC) systems. We use differential phase shift keying (DPSK) and continuous phase modu-lation (CPM). These modulations preserve the continuous phase between the FH sub-pulses, unlike phase shiftkeying (PSK) modulated symbols. The performance of FH/DPSK and FH/CPM systems is compared with thatof the FH/PSK system in terms of range sidelobe levels (RSL) and power spectral density (PSD). It is shownthat the proposed DFRC systems exhibit better spectral containment and lower spectral sidelobe levels. Thecommunication data rates for the proposed system are derived, and to assume relatively high values.