2013 Fiscal Year Final Research Report
Design and Application of Code Sequences Based on Chaos Theory and Shift Registers
| Project/Area Number |
23560460
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Kumamoto University |
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Principal Investigator |
TSUNEDA Akio 熊本大学, 自然科学研究科, 准教授 (40274493)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIOKA Daisaburo 崇城大学, 情報学部, 准教授 (70435147)
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| Project Period (FY) |
2011 – 2013
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| Keywords | Gold系列 / CDMA / 非線形フィードバックシフトレジスタ / 負相関系列 / カオス理論 / ユニポーラ符号 / TDOA / 屋内測位システム |
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| Research Abstract |
In this research, we designed binary sequences with negative auto-correlation based on LFSRs/NFSRs and the chaos theory and revealed that the proposed sequences can reduce bit error rate (BER) in asynchronous DS/CDMA systems compared with the conventional Gold sequences. Furthermore, it has been shown that the proposed spreading sequences are also useful for optical CDMA communications and local positioning systems.
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