In this work we consider a multiple-input multiple-output (MIMO) dual-function radar-communication (DFRC) system, which senses multiple spatial directions and serves multiple users. Upon resorting to an orthogonal frequency division multiplexing (OFDM) transmission format and a differential phase shift keying (DPSK) modulation, we study the design of the radiated waveforms and of the receive filters employed by the radar and the users. The approach is communication-centric, in the sense that a radar-oriented objective is optimized under constraints on the average transmit power, the power leakage towards specific directions, and the error rate of each user, thus safeguarding the communication quality of service (QoS). We adopt a unified design approach allowing a broad family of radar objectives, including both estimation- and detection-oriented merit functions. We devise a suboptimal solution based on alternating optimization of the involved variables, a convex restriction of the feasible search set, and minorization-maximization, offering a single algorithm for all of the radar merit functions in the considered family. Finally, the performance is inspected through numerical examples.

中文翻译：

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误码率和波束方向图约束下的 MIMO OFDM 双功能雷达通信


在这项工作中，我们考虑了一种多输入多输出（MIMO）双功能雷达通信（DFRC）系统，该系统可感知多个空间方向并为多个用户提供服务。通过采用正交频分复用 (OFDM) 传输格式和差分相移键控 (DPSK) 调制，我们研究了辐射波形以及雷达和用户使用的接收滤波器的设计。该方法以通信为中心，即在平均发射功率、特定方向的功率泄漏以及每个用户的错误率的约束下优化面向雷达的目标，从而保障通信服务质量（QoS） ）。我们采用统一的设计方法，允许广泛的雷达目标系列，包括面向估计和检测的评价函数。我们设计了一个基于所涉及变量的交替优化、可行搜索集的凸限制和最小化最大化的次优解决方案，为所考虑的系列中的所有雷达评价函数提供单一算法。最后通过数值算例检验了其性能。