基于峰均比约束的双功能雷达通信波形折中优化设计

Dual-functional radar-communication waveform trade-off optimal design with peak average power ratio constraint

双功能雷达通信(DFRC,dual-function radar-communication)技术利用相同的硬件平台、频谱资源和发射波形同时实现雷达和通信功能,为实现通信感知一体化功能提供强有力的支撑。针对双功能雷达通信系统,研究了雷达和通信的波形折中优化设计,同时考虑在传输能耗和峰均比约束下,构建具有二次等式和不等式约束的非凸优化问题,并利用非线性等式约束交替方向乘子算法将非凸优化问题分解为3个子问题实现优化求解。仿真结果表明,优化设计的双功能雷达通信波形可逼近理想雷达波形,同时实现了雷达性能和通信性能之间的折中优化。

Based on the same hardware platform,spectrum resources,and transmit waveforms,dual-function radar-communication(DFRC)can achieve radar and communication functions at the same time,which provides a strong support for realizing integrated sensing and communication(ISAC).Aiming at the dual-function radar communication system,radar and communication waveform trade off optimal design was studied,and a non-convex optimization problem was constructed with quadratic equality and inequality constraints under the constraints of transmission energy consumption and peak-to-average ratio(PAPR).The nonlinear equality constrained alternative direction method of multipliers was used to decompose the non-convex optimization problem into three sub-problems.The simulation results show that the optimized dual-function radar communication waveform can approach the ideal radar waveform and realize the optimal performance tradeoff between radar and communication.