Experimental Analysis of Continuous Wave Interference Mechanism in Mobile Communication Equipment

IF 2.6 3区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Electromagnetic Compatibility Pub Date : 2026-10-01 Epub Date: 2026-08-10 DOI:10.1109/TEMC.2026.3716254

Koh Watanabe;Ifong Wu;Yasushi Matsumoto;Makoto Nagata;Kaoru Gotoh

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引用次数: 0

Abstract

In this article, we present an experimental analysis of electromagnetic interference in mobile communication systems caused by unmodulated continuous wave (CW) noise. The CW noise model represents a harmonic component of a clock signal that is unintentionally radiated from digital circuits based on electromagnetic noise measurement. The effects of CW noise on mobile communication systems are evaluated through wired and wireless measurements using multiple commercial user equipment. The results indicate that interference characteristics caused by CW noise strongly depend on the relationship between the CW noise frequency and channel mapping of the communication system. Severe degradation occurs when CW noise interferes with reference signals, while a slight impact is observed when it aligns with the center of channels that allocate only data bits. These trends were consistently observed across all tested equipment. This finding clarifies conditions under which CW noise used to represent a harmonic component of clock signal radiated from digital circuits, leads to strong interference and provides practical insights to set an emission limit and design high-reliability mobile communication systems.

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移动通信设备中连续波干扰机理的实验分析

本文对移动通信系统中未调制连续波噪声引起的电磁干扰进行了实验分析。连续波噪声模型表示基于电磁噪声测量的数字电路无意辐射的时钟信号的谐波分量。通过使用多个商业用户设备进行有线和无线测量，评估了连续波噪声对移动通信系统的影响。结果表明，连续波噪声引起的干扰特性在很大程度上取决于连续波噪声频率与通信系统信道映射之间的关系。当连续波噪声干扰参考信号时，会发生严重的退化，而当它与只分配数据位的通道中心对齐时，会产生轻微的影响。这些趋势在所有测试设备中都得到了一致的观察。这一发现阐明了用于表示数字电路辐射时钟信号谐波成分的连续波噪声导致强干扰的条件，并为设置发射限制和设计高可靠性移动通信系统提供了实际见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Electromagnetic Compatibility 工程技术-电信学

CiteScore

4.80

自引率

19.00%

发文量

235

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Electromagnetic Compatibility publishes original and significant contributions related to all disciplines of electromagnetic compatibility (EMC) and relevant methods to predict, assess and prevent electromagnetic interference (EMI) and increase device/product immunity. The scope of the publication includes, but is not limited to Electromagnetic Environments; Interference Control; EMC and EMI Modeling; High Power Electromagnetics; EMC Standards, Methods of EMC Measurements; Computational Electromagnetics and Signal and Power Integrity, as applied or directly related to Electromagnetic Compatibility problems; Transmission Lines; Electrostatic Discharge and Lightning Effects; EMC in Wireless and Optical Technologies; EMC in Printed Circuit Board and System Design.