FTN(Faster-Than-Nyquist) 전송 방식은 송신 펄스를 중첩시켜 동일한 대역폭 내에서 나이퀴스트(Nyquist) 율보다 빠른 속도로 심볼을 전송하는 기법이다. FTN 전송 방식을 적용하면 동일한 시간 구간 동안 나이퀴스트 전송방식보다 많은 수의 심볼이 존재하게 되므로, 심볼 당 에너지가 같을 때 신호의 송신 전력이 커진다. 따라서 FTN 기반 전송 시스템의 올바른 성능 평가를 위해서는 이 점에 유의하여 성능 평가 기준을 설정하여야 하며, 기존 나이퀴스트 기반 전송 시스템에서 활용되던 성능 평가 기준 간의 환산 공식 또한 주의하여 활용할 필요가 있다. 본논문에서는 FTN 전송 방식이 적용된 시스템에서의 성능 평가 기준과 관계식에 대해 분석하고 타당한 성능 평가기준을 제시한다.
KSP Keywords
Faster-than-Nyquist
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