CAJ | 학술논문

针对已有稳健波束形成算法实时性差、收敛速度慢、输出信干噪比(SINR)低的缺陷，提出基于导向矢量实时校准的稳健波束形成算法。该算法首先构造一个正定矩阵，然后根据真实期望信号正交于噪声子空间的原理，建立代价函数，采用最陡下降法自适应迭代求解权矢量，最后将权矢量投影到信号干扰子空间。仿真验证表明该算法实时性好、收敛速度快、输出 SINR高，在较大导向矢量误差范围内仍能保持良好性能，具有较高的实际应用价值。
침대이유은건파속형성산법실시성차、수렴속도만、수출신간조비(SINR)저적결함，제출기우도향시량실시교준적은건파속형성산법。해산법수선구조일개정정구진，연후근거진실기망신호정교우조성자공간적원리，건립대개함수，채용최두하강법자괄응질대구해권시량，최후장권시량투영도신호간우자공간。방진험증표명해산법실시성호、수렴속도쾌、수출 SINR고，재교대도향시량오차범위내잉능보지량호성능，구유교고적실제응용개치。
Aiming at the problem of the existing robust beamforming algorithms with poor real-time capability, slow convergence speed and low output signal to Interference and noise ratio (SINR),a robust beamforming al-gorithm based on real-time calibration for steering vector was proposed.A positive matrix was constructed first-ly,then the cost function was defined by utilizing the orthogonality between the noise subspace and the real de-sired signal.And the weight vector was iterative solved by using the steepest descent algorithm.Finally,the weight vector was proj ected onto the signal and interference subspace.Simulation results showed that the pro-posed algorithm provided good real-time capability,fast convergence speed,high output SINR and could per-form well in a large range of steering vector errors.