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    Large Zero Autocorrelation Zone of Golay Sequences and 4q4^q-QAM Golay Complementary Sequences

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    Sequences with good correlation properties have been widely adopted in modern communications, radar and sonar applications. In this paper, we present our new findings on some constructions of single HH-ary Golay sequence and 4q4^q-QAM Golay complementary sequence with a large zero autocorrelation zone, where H2H\ge 2 is an arbitrary even integer and q2q\ge 2 is an arbitrary integer. Those new results on Golay sequences and QAM Golay complementary sequences can be explored during synchronization and detection at the receiver end and thus improve the performance of the communication system