In this paper, we investigate the coexistence of a single cell massive MIMO communication system with a MIMO radar. We consider the case where the massive MIMO BS is aware of the radar's existence and treats it as a non-serviced user, but the radar is unaware of the communication system's existence and treats the signals transmitted by both the BS and the communication users as noise. Using results from random matrix theory, we derive the rates achievable by the communication system and the radar. We then use these expressions to obtain the achievable rate regions for the proposed joint radar and communications system. We observe that due to the availability of a large number of degrees of freedom at the mMIMO BS, results in minimal interference even without co-design. Finally we corroborate our findings via detailed numerical simulations and verify the validity of the results derived previously under different settings.

翻译：本文研究了单小区大规模MIMO通信系统与MIMO雷达的共存问题。我们考虑以下场景：大规模MIMO基站已知雷达的存在并将其视为非服务用户，而雷达未知通信系统的存在，并将基站与通信用户发射的信号均视为噪声。利用随机矩阵理论的结果，我们推导了通信系统与雷达的可达速率。进而利用这些表达式，获得了所提出的雷达与通信联合系统的可达速率区域。研究发现，由于大规模MIMO基站具有大量自由度，即使不进行协同设计，其产生的干扰也极小。最后，通过详细的数值仿真验证了我们的发现，并在不同设置下确认了先前推导结果的正确性。