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Special Graduate Schools
Graduate School of Science and Technology
Department of Information and Electronics Engineering
3. Theses(Master)
디지털 변조신호의 전자기파에 의한 기기에 미치는 영향 연구
- Alternative Title
- A study of the effect of electromagnetic wave by different digital modulation siganl on the device
- Author(s)
- 곽필근
- Alternative Author(s)
- Kwak, Phil-Keun
- Advisor
- 金榮吉
- Department
- 산업대학원 정보전자공학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2011-02
- Language
- kor
- Abstract
- 현대 이동통신기술의 급격한 발전과 함께 800 ㎒ 이상의 주파수 대역에서는 다양한 디지털변조방식에 의한 기술이 서비스되고 있다. 그러나 국내에서는 전자기파 방사의 영향에 대한 특별한 검토나 연구가 없이 IEC 61000-4-3에 기반한 방사내성시험이 AM신호로만 수행되고 있으며 광대역 디지털 변조신호나 cdmaone(IS-95)나 WCDMA 접속방식에 의한 PM 신호로는 시험 되지 않고 있다. 본 연구는 전자기파 방사내성 시험의 기술표준을 검토하여, 국내전파환경에 적합한 인가신호를 분석하고 시험하기 위해 수행되었다. 연구 결과로는 AM신호보다 PM신호나 디지털 변조신호 인가 시, 더 큰 영향을 받는 것으로 확인되었다. 본 연구 결과는 국내통신기술의 환경에 맞는 정확하고 합리적인 방사내성의 평가를 위해서는 단편적인 접근이 아닌 대역폭, 물리채널, 변조기술, 출력전력 및 다중화에 의한 신호 등의 복합적 검토와 심층적 연구가 필요함을 보여준다.
- Alternative Abstract
- With the rapid development of mobile communication technology，the technology based on the diverse digital modulation schemes have been used for the frequency range of over 800㎒ Although mobile technology including the 2nd generation mobile communication cdmaone (IS-95) and the 3rd generation mobile communication WCDMA are commonly used,they have been used without any consideration of the influence of electromagnetic radiation in Korea. The only radiation immunity has been tested using only IEC 61000-4-3 with AM signal; however, it has not been tested by wideband digital modulation signal or cdmaone(IS-95) with PM signal. The purpose of this study was to review the standards of electromagnetic radiation immunity test, which is commonly used in Europe and Korea. In addition, the input signals of electromagnetic radiation immunity were analyzed and tested considering the electromagnetic environments in Korea. The results showed that the radiation irnmunity was influenced by digital modulation signal by PM signal more than by AM signal. This study implies that more precise and appropriate radiation immunity tests need more comprehensive test methods including bandwith, physical channel, transformation technology, and multiple access technology as well as the basic components such as frequency and range, considering telecommunication environments in Korea.
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