The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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SER Analysis of Arbitrary Two-Dimensional Signaling over Nonlinear AWGN Channels

비선형 채널에서 임의의 2차원 변조 신호의 SER 분석

  • 이재윤 (한양대학교 전자통신컴퓨터공학부) ;
  • 윤동원 (한양대학교 전자통신컴퓨터공학부) ;
  • 조경국 (한양대학교 전자통신컴퓨터공학부)
  • Published : 2007.07.31
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Abstract

The non-linearity of HPA(high power amplifier) which is an important component in modern communications systems introduces AM/AM and AM/PM distortion so that the transmitted signal is deteriorated. And, the I/Q unbalances and phase error which are generated by non-ideal components are inevitable physical phenomena and lead to performance degradation when we implement a practical two-dimensional (2-D) modulation system. In this paper, we provide an exact and general expression involving the 2-D Gaussian Q-function for the error probabilities of arbitrary 2-D signaling with I/Q amplitude and phase unbalances in nonlinear additive white Gaussian noise (AWGN) channels by using the coordinate rotation and shifting technique.

본 논문에서는 비선형 특성을 갖는 고출력 증폭기(high power amplifier : HPA) 및 I/Q 진폭/위상 불균형과 위상 오류를 갖는 비이상적인 수신기가 고려된 APSK 뿐만 아니라 임의의 2차원 신호를 갖는 변조방식에 대한 오류 확률 표현을 유도하고, 그 표현의 수치적 결과로부터 비선형 특성 및 비 이상적인 특성이 오류 확률에 미치는 영향을 분석한다. HPA의 모델로는 가장 많이 사용되는 Saleh 모델을 적용하며, 한 신호점에서의 오류 확률 분석을 2차원 결합 가우시안 Q함수(2-dimensional joint Gaussian Q-function)의 표현으로 간편히 할 수 있는 방법을 통하여 정확한 오류 확률의 유도 및 분석을 수행한다.

Keywords

References

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