| 摘要 |
An amble modulation series in a downlink relay zone in an IEEE 802.16 network, the amble modulation series being a reverse version of a preamble modulation series of the network. For example, the amble modulation series is related to a preamble modulation series PN<SUB>i</SUB>, i=0, 1, . . . , 113 of the IEEE 802.16 network as follows: <?in-line-formulae description="In-line Formulae" end="lead"?>PN<SUB>i</SUB><SUP>A</SUP>(j)=PN<SUB>i</SUB>(J-j), i=0, 1, . . . , 113, j=0, 1, . . . , J<?in-line-formulae description="In-line Formulae" end="tail"?> where J is dependent on a Fast Fourier Transform (FFT) size of the network, and is equal to 567, 283 and 142 for an FFT size of 2048, 1024 and 512, respectively.
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