The Proceeding of the Korean Institute of Electromagnetic Engineering and Science (한국전자파학회지:전자파기술)
- Volume 6 Issue 3
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- Pages.36-54
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- 1995
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- 1738-9712(pISSN)
Error Performance Analysis of Digital Radio Signals in an Electromagnetic Interference (EMI) Environment of Impulsive Noise Plus Disturbance
임펄스 잡음과 방해파에 의한 전자파 장해(EMI) 환경하에서의 디지털 무선통신 신호의 오율해석
- Cho, Sung-Eon (Dept.of Avionics Eng., Hankuk Aviation Univ.) ;
- Leem, Kill-Yong (Dept.of Avionics Eng., Hankuk Aviation Univ.) ;
- Cho, Sung-Joon (Dept.of Telecom. & Inform. Eng., Hankuk Aviation Univ.) ;
- Lee, Jin (Dept.of Telecom. & Inform. Eng., Hankuk Aviation Univ.)
- Published : 1995.09.01
Abstract
The error performance of digital radio signals (i.e., M-ary PSK signal, DQPSK signal, MSK signal, GMSK signal) interfered by impulsive noise and electromagnetic interference (EMI) is analyzed and discussed. In analysis at first, the error rate equations have been derived in an electromagnetic interference plus impulsive noise environment. And then, the error performance has been evaluated and shown in figures as a function of carrier-to-noise ratio, carrier-to-interference ratio, impu- lsive index, gaussian noise to impulsive noise power ratio, and interference index to measure the amount of error degradation in digital radio signals. From the obtained results we have known that in the presence of m-distributed tone interference plus inpulsive noise, the more significant the electromagnetic interference amplitude varies, the more significant performance degradation is produced. The listing the digital radio signals from the most degraded to the least is that DQPSK, GMSK, QPSK and MSK signal. In the constant amplitude tone interference plus impulsive noise environment, the effect of in- terference nearly disappears over about 20dB in CIR. The effect of constant tone interference on error rate performance is reduced more remarkably in the region from 10dB to 15dB in CIR. In both enviroments of m-distributed tone interference and constant amplitude tone interference, the more electromagnetic interference amplitude varies and CIR increases, the more error perfor- mance is improved. But it is found out that the performance can not be improved significantly even the electromagnetic interference becomes weak. This describes that the impulsive noise affects dominantly to the performance degradation.
본 논문에서는 임펄스 잡음과 방해파에 의한 전자파 장해(EM!) 환경하에서 디지틀 무선통신 신호(QPSK 신호, DQPSK 신호,MSK 신호 및 GMSK 신호) 의 오율성능을 알아내기 위하여 오율식을 유도하고 이의 수치 계산 결과를 반송파 대잡음 전력비(CNR), 반송파 대 방해파 전력비(CIR), 임펄스 지수(A), 가우스 잡음 대 임 펄스 잡음 전력비(
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