Chengqian XU


New Perfect Gaussian Integer Sequences from Cyclic Difference Sets
Tao LIU Chengqian XU Yubo LI Kai LIU 
Publication:   
Publication Date: 2017/12/01
Vol. E100-A  No. 12  pp. 3067-3070
Type of Manuscript:  LETTER
Category: Information Theory
Keyword: 
Gaussian integer sequenceperfect sequencecyclic difference setzero autocorrelation
 Summary | Full Text:PDF(148.1KB)

New Constructions of Multiple Binary ZCZ Sequence Sets with Inter-Set Zero Cross-Correlation Zone
Tao LIU Chengqian XU Yubo LI Xiaoyu CHEN 
Publication:   
Publication Date: 2017/12/01
Vol. E100-A  No. 12  pp. 3007-3015
Type of Manuscript:  PAPER
Category: Information Theory
Keyword: 
inter-set zero cross-correlation zonezero correlation zone (ZCZ)multiple binary ZCZ sequence setsquasi-synchronous code division multiple access (QS-CDMA)
 Summary | Full Text:PDF(1.2MB)

Constructions of Zero Correlation Zone Sequence Sets with Low Cross-Correlation Property
Tao LIU Chengqian XU Yubo LI 
Publication:   
Publication Date: 2017/07/01
Vol. E100-A  No. 7  pp. 1583-1587
Type of Manuscript:  LETTER
Category: Information Theory
Keyword: 
polyphase sequenceszero correlation zone (ZCZ)r-coincidence sequencesquasi-synchronous code division multiple access
 Summary | Full Text:PDF(158.2KB)

Constructions of Optimal Zero Correlation Zone Aperiodic Complementary Sequence Sets
Yubo LI Jiaan SUN Chengqian XU Kai LIU 
Publication:   
Publication Date: 2017/03/01
Vol. E100-A  No. 3  pp. 908-912
Type of Manuscript:  LETTER
Category: Information Theory
Keyword: 
multi-carriers CDMA communicationzero correlation zone (ZCZ)aperiodic complementary sequence
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Perfect Gaussian Integer Sequences of Degree-4 Using Difference Sets
Xiuping PENG Jiadong REN Chengqian XU Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/12/01
Vol. E99-A  No. 12  pp. 2604-2608
Type of Manuscript:  LETTER
Category: Spread Spectrum Technologies and Applications
Keyword: 
autocorrelationGaussian integer sequenceperfect sequencedifference set
 Summary | Full Text:PDF(83.8KB)

The Constructions of Mismatched Filtering of Periodic Quadriphase Sequences with Even Length
Xiuping PENG Chengqian XU Jiadong REN Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/09/01
Vol. E99-A  No. 9  pp. 1735-1739
Type of Manuscript:  LETTER
Category: Coding Theory
Keyword: 
quadriphase sequencescross-correlation sequencesmismatched filtering
 Summary | Full Text:PDF(78.3KB)

Construction of Z-Periodic Complementary Sequence Sets over the 8-QAM+ Constellation
Xiaoyu CHEN Deming KONG Chengqian XU Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/08/01
Vol. E99-A  No. 8  pp. 1635-1638
Type of Manuscript:  LETTER
Category: Coding Theory
Keyword: 
complementary sequencezero correlation zone8-QAM+ constellation
 Summary | Full Text:PDF(74.3KB)

Constructions of Gaussian Integer Sequences with Zero Correlation Zone
Xiaoyu CHEN Deming KONG Chengqian XU Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/06/01
Vol. E99-A  No. 6  pp. 1260-1263
Type of Manuscript:  LETTER
Category: Coding Theory
Keyword: 
quasi-synchronous code-division multiple-access (QS-CDMA)zero correlation zone (ZCZ)Gaussian integer sequence
 Summary | Full Text:PDF(69.5KB)

A Construction of Optimal 16-QAM+ Sequence Sets with Zero Correlation Zone
Yubo LI Kai LIU Chengqian XU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/04/01
Vol. E99-A  No. 4  pp. 819-825
Type of Manuscript:  PAPER
Category: Information Theory
Keyword: 
16-QAM+ constellationzero correlation zone (ZCZ)ternary sequenceorthogonal matrix
 Summary | Full Text:PDF(678.2KB)

New Families of Binary Sequence Pairs with Three-Level Correlation and Odd Composite Length
Xiuping PENG Jiadong REN Chengqian XU Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/04/01
Vol. E99-A  No. 4  pp. 874-879
Type of Manuscript:  LETTER
Category: Spread Spectrum Technologies and Applications
Keyword: 
optimal correlation valueChinese remainder theorembinary sequence pair
 Summary | Full Text:PDF(110.8KB)

New Construction of Optimal p2-Ary Low Correlation Zone Sequence Sets
Yubo LI Kai LIU Chengqian XU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/06/01
Vol. E98-A  No. 6  pp. 1288-1294
Type of Manuscript:  PAPER
Category: Information Theory
Keyword: 
quasi-synchronous CDMAp2-ary sequencelow correlation zone (LCZ)interleaving techniquecolumn sequences
 Summary | Full Text:PDF(628.8KB)

Perfect Gaussian Integer Sequence Pairs
Chengqian XU Xiuping PENG Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/07/01
Vol. E97-A  No. 7  pp. 1568-1575
Type of Manuscript:  PAPER
Category: Coding Theory
Keyword: 
autocorrelationChinese remainder theorempunctured binary sequenceperfect sequence pair
 Summary | Full Text:PDF(571.6KB)

New Constructions of Perfect 8-QAM+/8-QAM Sequences
Chengqian XU Xiaoyu CHEN Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/04/01
Vol. E97-A  No. 4  pp. 1012-1015
Type of Manuscript:  LETTER
Category: Coding Theory
Keyword: 
perfect sequenceQAM+ constellationenergy efficiencymapping
 Summary | Full Text:PDF(86.9KB)

Odd Perfect Sequences and Sequence Sets with Zero Odd Correlation Zone over the 8-QAM+ Constellation
Yubo LI Kai LIU Chengqian XU Gang LI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/01/01
Vol. E97-A  No. 1  pp. 425-428
Type of Manuscript:  LETTER
Category: Information Theory
Keyword: 
odd perfect sequenceZero odd correlation zone (ZOCZ)8-QAM+ constellationternary odd perfect sequence
 Summary | Full Text:PDF(92.1KB)

Construction of Shift Distinct Sequence Sets with Zero or Low Correlation Zone
Xiaoyu CHEN Chengqian XU Yubo LI Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/01/01
Vol. E96-A  No. 1  pp. 377-382
Type of Manuscript:  LETTER
Category: Coding Theory
Keyword: 
quasi-synchronous code-division multiple access (QS-CDMA systems)interleaving techniquezero-correlation zone or low-correlation zone(ZCZ/LCZ)shift sequence
 Summary | Full Text:PDF(111.3KB)

Construction of Optimal Low Correlation Zone Sequence Sets Based on DFT Matrices
Chengqian XU Yubo LI Kai LIU Xiaoyu CHEN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/10/01
Vol. E95-A  No. 10  pp. 1796-1800
Type of Manuscript:  LETTER
Category: Coding Theory
Keyword: 
low correlation zone (LCZ)Interleaved techniqueQuasi-synchronous code-division mutiple access (QS-CDMA)DFT matrices
 Summary | Full Text:PDF(99.7KB)

A New Construction of Optimal LCZ Sequence Sets
Yubo LI Chengqian XU Kai LIU Gang LI Sai YU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/09/01
Vol. E95-A  No. 9  pp. 1646-1650
Type of Manuscript:  LETTER
Category: Communication Theory and Signals
Keyword: 
quasi-synchronous CDMA (QS-CDMA)ternary sequencep-ary sequencelow-correlation zone (LCZ) sequence set
 Summary | Full Text:PDF(98KB)

Almost Quadriphase Sequences with Even Period and Low Autocorrelation
XiuPing PENG Chengqian XU Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/04/01
Vol. E95-A  No. 4  pp. 832-834
Type of Manuscript:  LETTER
Category: Coding Theory
Keyword: 
sequencesalmost quadriphase sequencesautocorrelationinterleaving iteration
 Summary | Full Text:PDF(72.8KB)

The Constructions of Almost Binary Sequence Pairs and Binary Sequence Pairs with Three-Level Autocorrelation
Xiuping PENG Chengqian XU Gang LI Kai LIU Krishnasamy Thiru ARASU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/09/01
Vol. E94-A  No. 9  pp. 1886-1891
Type of Manuscript:  LETTER
Category: Information Theory
Keyword: 
autocorrelationdifference setsdifference set pairsalmost binary sequence pairsbinary sequence pairs
 Summary | Full Text:PDF(99.4KB)

New Method to Extend the Number of Quaternary Low Correlation Zone Sequence Sets
Chengqian XU Yubo LI Kai LIU Gang LI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/09/01
Vol. E94-A  No. 9  pp. 1881-1885
Type of Manuscript:  LETTER
Category: Information Theory
Keyword: 
QS-CDMAquaternary sequenceslow correlation zone (LCZ)inverse Gray mapping
 Summary | Full Text:PDF(101.1KB)

Construction of Mutually Orthogonal Zero Correlation Zone Polyphase Sequence Sets
Yubo LI Chengqian XU Kai LIU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/04/01
Vol. E94-A  No. 4  pp. 1159-1164
Type of Manuscript:  LETTER
Category: Information Theory
Keyword: 
QS-CDMA(quasi-synchronous CDMA)interleaving iterationDFT matricesZCZ (zero-correlation zone) sequence setmutually orthogonal
 Summary | Full Text:PDF(104.5KB)

On Binary Sequence Pairs with Two-Level Periodic Autocorrelation Function
Kai LIU Chengqian XU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/11/01
Vol. E93-A  No. 11  pp. 2278-2285
Type of Manuscript:  Special Section PAPER (Special Section on Signal Design and its Application in Communications)
Category: Sequences
Keyword: 
binary sequence pairdifference set pairtwo-level periodic autocorrelation functionsequence pair with zero correlation zone
 Summary | Full Text:PDF(237.6KB)