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A General Construction of Sequences with Good Autocorrelation over the 16QAM Constellation
Xuan ZHANG Jing QIN Qiaoyan WEN Jie ZHANG
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E95A
No.10
pp.18011805 Publication Date: 2012/10/01 Online ISSN: 17451337
DOI: 10.1587/transfun.E95.A.1801 Print ISSN: 09168508 Type of Manuscript: LETTER Category: Coding Theory Keyword: 16QAM, binary sequences, interleaved sequences, multiple sequences, Gray mapping, autocorrelation,
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Summary:
In this paper, we introduce a construction of 16QAM sequences based on known binary sequences using multiple sequences, interleaved sequences and Gray mappings. Five kinds of binary sequences of period N are put into the construction to get five kinds of new 16QAM sequences of period 4N. These resultant sequences have 5level autocorrelation {0, ±8, ±8N}, where ±8N happens only once each. The distributions of the periodic autocorrelation are also given. These will provide more choices for many applications.

