Optimal Mutually Orthogonal ZCZ Polyphase Sequence Sets

Fanxin ZENG; Xiping HE; Guixin XUAN; Wenchao ZHANG; Guojun LI; Zhenyu ZHANG; Yanni PENG; Sheng LU; Li YAN

doi:10.1587/transfun.E101.A.1713

Regular Section

Optimal Mutually Orthogonal ZCZ Polyphase Sequence Sets

Fanxin ZENG, Xiping HE, Guixin XUAN, Wenchao ZHANG, Guojun LI, Zhenyu ZHANG, Yanni PENG, Sheng LU, Li YAN

Author information

Fanxin ZENG
Chongqing Engineering Laboratory for Detection, Control and Integrated System, Chongqing Technology and Business University
The National Mobile Communications Research Laboratory, Southeast University
Xiping HE
Chongqing Engineering Laboratory for Detection, Control and Integrated System, Chongqing Technology and Business University
The National Mobile Communications Research Laboratory, Southeast University
Guixin XUAN
The College of Communication Engineering, Chongqing University
The Communication NCO Academy, Army Engineering University of PLA
Wenchao ZHANG
The Communication NCO Academy, Army Engineering University of PLA
Guojun LI
The College of Photoelectric Engineering, Chongqing University of Posts and Telecommunications
Zhenyu ZHANG
The National Mobile Communications Research Laboratory, Southeast University
The Communication NCO Academy, Army Engineering University of PLA
Yanni PENG
Chongqing Engineering Laboratory for Detection, Control and Integrated System, Chongqing Technology and Business University
The National Mobile Communications Research Laboratory, Southeast University
Sheng LU
Chongqing Engineering Laboratory for Detection, Control and Integrated System, Chongqing Technology and Business University
The National Mobile Communications Research Laboratory, Southeast University
Li YAN
Chongqing Engineering Laboratory for Detection, Control and Integrated System, Chongqing Technology and Business University
The National Mobile Communications Research Laboratory, Southeast University

Keywords: ZCZ sequence, mutually orthogonal sequence set, theoretical bound, AS-CDMA

JOURNAL RESTRICTED ACCESS

2018 Volume E101.A Issue 10 Pages 1713-1718

DOI https://doi.org/10.1587/transfun.E101.A.1713

Details

Abstract

In an approximately synchronized (AS) code-division multiple-access (CDMA) communication system, zero correlation zone (ZCZ) sequences can be used as its spreading sequences so that the system suppresses multiple access interference (MAI) and multi-path interference (MPI) fully and synchronously. In this letter, the mutually orthogonal (MO) ZCZ polyphase sequence sets proposed by one of the authors are improved, and the resultant ZCZ sequences in each set arrive at the theoretical bound regarding ZCZ sequences under some conditions. Therefore, the improved MO ZCZ sequence sets are optimal.

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