We present a transmit power adaptive filter-bank multicarrier with offset quadrature amplitude modulation (FBMC-OQAM) waveform for joint communication and radar system. For frequency selective fading channels or frequency sensitive targets, a joint optimization problem is designed by taking both the radar detection performance and communication channel capacity into the objective function under the constraint of limited transmit power. In addition, we derive the power allocation condition where the optimal performance of radar and communication can be achieved simultaneously. Otherwise, the tradeoff between radar and communication performance is necessary by adjusting the weighting factor. The proposed algorithm can realize adaptive transmission where the parameters of the transmitting waveform can be optimally designed for the next pulse by utilizing the measured values of the current signal and the channel state information. Moreover, the feasibility and advantages of FBMC as the radar signal are analyzed from the aspects of average ambiguity function, multipath effect and Doppler shift. Simulation results verify the effectiveness of the proposed scheme. Compared with the equal power allocation, the proposed adaptive transmission power algorithm in this paper shows better performance.

我们提出了一种用于联合通信和雷达系统的具有偏移正交幅度调制（FBMC-OQAM）波形的发射功率自适应滤波器组多载波。对于频率选择性衰落信道或频率敏感目标，通过在有限发射功率的约束下将雷达检测性能和通信信道容量都纳入目标函数中，从而设计出联合优化问题。另外，我们得出了可以同时实现雷达和通信最佳性能的功率分配条件。否则，必须通过调整加权因子来权衡雷达和通信性能。所提出的算法可以实现自适应传输，其中可以利用电流信号的测量值和信道状态信息为下一个脉冲优化传输波形的参数。此外，从平均模糊函数，多径效应和多普勒频移等方面分析了FBMC作为雷达信号的可行性和优势。仿真结果验证了该方案的有效性。与等功率分配相比，本文提出的自适应传输功率算法具有更好的性能。仿真结果验证了该方案的有效性。与等功率分配相比，本文提出的自适应传输功率算法具有更好的性能。仿真结果验证了该方案的有效性。与等功率分配相比，本文提出的自适应传输功率算法具有更好的性能。