针对当前全双工系统无法有效应对外部干扰的问题，将全双工自干扰抑制技术与阵列自适应波束成形技术相结合，提出一种自干扰和外干扰的数字域联合抑制算法。首先建立该场景下全双工阵列的系统模型，然后基于时域自干扰抑制算法和最小方差无失真响应(MVDR)波束成形算法，给出算法的数学模型，并对该算法的性能进行理论分析。数值仿真证明，该算法能够同时将自干扰与外干扰抑制到噪声电平以下。

In view of the fact that the current full duplex systems cannot effectively deal with external interference, a joint algorithm based on self-interference suppression technology and adaptive beamforming technology, is proposed for eliminating self-interference and external interference simultaneously. Firstly, the system model of the full duplex arrays under this scenario is established. Then, according to time-domain cancellation method and Minimum Variance Distortionless Response(MVDR) method, the mathematical model as well as the performance analysis of the algorithm is derived. At last, the numerical simulation results indicate that the proposed algorithm can restrain both self-interference and external interference to the noise level.