A FAST ADAPTIVE NULL-STEERING ALGORITHM-BASED ON OUTPUT POWER MEASUREMENTS

Presented and investigated here is a simple and fast adaptive algorith m for linear Power inversion arrays whose nulls can be accurately stee red by controlling the element weights. Based on measurements of the p owers of the three signals derived from the array output and the outpu t of an auxiliary beamformer, the algorithm tracks unknown jammers in the environment by steering the nulls of the array one by one in a cyc lical time-multiplexed manner. When compared with the least mean squar e (LMS) algorithm, the proposed algorithm has about the same inplement ation complexity, a better convergence behavior and the advantage that the nulls are directly available.