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A method of constructing digital phase reversal codes which have few nonzero sidelobes and which are available in frequent lengths is given. This is particularly important in the area of longer codes. The codes are a form of combined sequence and, hence, have the desirable property of bandwidth reduction for the outer code. However, only two member codes are required. A major usage of these codes may be in addressing. 相似文献
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The autocorrelation functions ?I(?) and ?II(?) of Codes I and II are shown in Figs. 1 and 2, respectively. Several interesting points are noted from a comparison of these figures. 相似文献
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