CAJ | 학술논문

针对传统不确定集约束稳健波束形成算法（S-WCRB ）的性能依赖于模约束参数的问题，提出了双不确定集约束的稳健宽带波束形成（D-WCRB ）算法。该算法将期望信号导向矢量约束于两个不同参数的球形不确定集中，解决模约束参数选择不当引起SINR性能下降的问题，推导了D-WCRB算法与S-WCRB算法获得不同SINR的必要条件，并讨论了D-WCRB算法中约束参数的选择问题。最后给出的数值仿真结果验证了该算法的有效性。
침대전통불학정집약속은건파속형성산법（S-WCRB ）적성능의뢰우모약속삼수적문제，제출료쌍불학정집약속적은건관대파속형성（D-WCRB ）산법。해산법장기망신호도향시량약속우량개불동삼수적구형불학정집중，해결모약속삼수선택불당인기SINR성능하강적문제，추도료D-WCRB산법여S-WCRB산법획득불동SINR적필요조건，병토론료D-WCRB산법중약속삼수적선택문제。최후급출적수치방진결과험증료해산법적유효성。
Since the robust beamformer based on a single uncertainty set constraints was susceptible to the norm constraint parameter ,a novel robust broadband beamforming algorithm based on the double uncertainty set constraints was proposed .In the case that the practical steering vector is constrained to two spherical uncertainty sets with different model parameter ,the proposed method effectively overcomes the SINR degradation problem of the robust beamformer based on a single uncertainty set constraints . Moreover ,a necessary condition under which the D-WCRB algorithm achieves different SINR performance from the S-WCRB algo-rithm was derived .The choices of constraint parameter were also discussed .Finally ,simulation results demonstrate the effectiveness of the proposed algorithm .