In array signal processing, the fourth-order cumulant can be applied to extend array virtually and enlarge aperture of array antenna, but computation load of algorithm would also increase.
在阵列信号处理中，利用四阶累积量可以使阵列虚拟扩展，增大了天线阵的孔径，但同时也增加了算法的计算量。
While AlAs oxide confined aperture may reduce the threshold current of vertical-cavity surface emitting lasers (VCSELs), it might also enlarge the series resistance of the VCSELs.
含氧化限制孔的VCSEL具有低的阈值电流，但氧化孔的存在也会加大串联电阻。
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