본 논문에서는 주요한 IoT(Internet of Things) 통신 기술 중 하나인 LoRa(Long Range)를 고려한다.최근 LoRa를 차량과 드론 등의 이동체에 이용하려는노력이 있었으나, 고속 페이딩(fast fading) 효과에 따른 성능저하가 심각해지는 문제가 있었다. 이러한 동기로 인해, 본 논문에서는 페이딩 효과에 의한 LoRa 기술의 성능저하를 경감시킬 목적으로, 심볼 인터리빙방식을 제안한다. 제안된 심볼 인터리빙 방식은 인터리빙 깊이를 증가시킴으로써 수신기의 복호화 성능을개선한다. 모의실험을 통해 제안된 심볼 인터리빙 방식이 에러율을 감소시킴을 보인다.
KSP Keywords
Fast fading, Long range, internet of things(IoT)
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