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16-QAM Sequences with Good Periodic Autocorrelation Function
Fanxin ZENG Yue ZENG Lisheng ZHANG Xiping HE Guixin XUAN Zhenyu ZHANG Yanni PENG Linjie QIAN Li YAN
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2019/12/01
Online ISSN: 1745-1337
Type of Manuscript: Special Section LETTER (Special Section on Information Theory and Its Applications)
16-QAM sequences, periodic autocorrelation function, smallest possible absolute sidelobe, quaternary sequences,
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Sequences that attain the smallest possible absolute sidelobes (SPASs) of periodic autocorrelation function (PACF) play fairly important roles in synchronization of communication systems, Large scale integrated circuit testing, and so on. This letter presents an approach to construct 16-QAM sequences of even periods, based on the known quaternary sequences. A relationship between the PACFs of 16-QAM and quaternary sequences is established, by which when quaternary sequences that attain the SPASs of PACF are employed, the proposed 16-QAM sequences have good PACF.