Study in Analysis Method of Nonstationary Signals

非平稳信号分析方法研究

• 批准号: 08650455
• 负责人: ISHIGURO Makio
• 金额: $ 1.47万
• 依托单位: THE INSTITUTE OF STATISTICAL MATHEMATICS
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650455/
• 关键词: Nonstationary signal; Time-series analysis; Signal processing; Spectral analysis; 移動無線通信; 脳波解析

Most of observed signals in natural and social phenomena are nonstationary. However the conventional signal analysis methods are based on an assumption of stationary condition, so that the reliability of results brought by these methods are not satisfied for practical signals. On the other hand, high capability of signal analysis technique is required as bio-systems have flexibility and preciseness for detection, extraction, and analysis corresponding to nonstationary signals.The researchers studied a novel approach to nonstationary phenomena based on the information contained in time-variations of signals, and proposed a new method for nonstationary processes supported by this Grant, The new analysis method applied to practical signals of bio-system including Electroencephalogram signal in human sleep. Considering modulation as one of nonstationary signals, the researchers studied also basic investigation of Spread Spectral (SS) modulation scheme and application to personal mobile communication services.

自然和社会现象中观察到的大多数信号都是非平稳的。然而，传统的信号分析方法是基于平稳条件的假设，因此这些方法所带来的结果的可靠性对于实际信号来说并不令人满意。另一方面，由于生物系统对非平稳信号的检测、提取和分析具有灵活性和精确性，因此需要高能力的信号分析技术。研究人员研究了一种基于信号随时间变化所包含的信息来处理非平稳现象的新方法，并提出了一种受本基金支持的非平稳过程新方法，该新分析方法应用于生物系统的实际信号，包括 人类睡眠时的脑电图信号。将调制视为非平稳信号之一，研究人员还研究了扩频（SS）调制方案及其在个人移动通信服务中的应用的基础研究。

项目成果

UCHIDA,TAKIZAWA. HIRAI,ISHIGURO.: "Human Sleep Erectro encephalogram Analysis Based on the Instantaneous Maximum Entropy Method." IEICE Transaction on Fundamentals of Electronics. 80A. 965-970 (1997)

内田、泷泽。

深沢敦司,滝沢由美,羽鳥光俊: "スペクトル拡散通信の基礎と移動通信への応用" 電子情報通信学会誌. Vol.80. (1997)

Atsushi Fukazawa、Yumi Takizawa、Mitsutoshi Hatori：“扩频通信基础及其在移动通信中的应用”，电子信息通信工程师学会杂志，第 80 卷（1997 年）。

Fukusawa A., Sato.T,Takizawa Y., et al: "Widebond CDMA System for Personal Radio Communication" IEEE Communication Magazine. 34・10. 116-123 (1996)

Fukusawa A.、Sato.T、Takizawa Y. 等人：“用于个人无线电通信的宽带 CDMA 系统”IEEE 通信杂志 34・10（1996 年）。

Uchida S. Takizawa Y.: "Human Sleep Electroencephalogram Analysis Based on the Instantaneous Maximum Entropy Method" 電子情報通信学会英文論文誌 EA. E80A・6. 965-970 (1997)

内田S.泷泽Y.：“基于瞬时最大熵法的人类睡眠脑电图分析”IEICE英文期刊EA.965-970（1997）。

Fukasawa A., Takizawa Y., and Hatori M.: ""Basic Understanding on Spread Spectrum Communication and Its Application to Mobile Radio Communications"" Journal of Institute of Electronics, Information and Communication Engineers (IEICE). Vol.81, No.1. 51-59

Fukasawa A.、Takizawa Y. 和 Hatori M.：“扩频通信及其在移动无线电通信中的应用的基本理解”，电子信息通信工程师学会期刊 (IEICE)。