한국항공우주학회지 (Journal of the Korean Society for Aeronautical & Space Sciences)

  • 제49권7호
  • /
  • Pages.589-592
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  • 2021
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  • 1225-1348(pISSN)
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  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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차등 부호기가 SOQPSK-TG 수신기 성능에 미치는 영향 평가

Evaluation of the Effect of Differential Encoder on SOQPSK-TG Receiver Performance

  • 투고 : 2021.03.16
  • 심사 : 2021.05.06
  • 발행 : 2021.07.01
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⟨ 이전 논문 다음 논문 ⟩

초록

프리코더와 CPM 변조기로 구성된 SOQPSK-TG는 수신기 구조를 단순화하기 위해 송신기에 차등 부호기를 추가한 차등 프리코더 방식이 텔레메트리 표준으로 채택되었다. 본 논문에서는 낮은 Eb/No에서 차등 부호기가 수신기 성능에 미치는 영향을 평가하였는데 컴퓨터 모의 실험한 결과에 의하면 차등 부호기가 없는 경우가 AWGN 채널에서 Eb/No 성능이 BER이 10-1일 때 약 2dB, 10-2일 때 약 1dB 더 우수하다.

SOQPSK-TG, which is composed of a precoder and a CPM modulator, adopts a differential precoder method with a differential encoder added to the transmitter as a telemetry standard to simplify the receiver structure. In this paper, we evaluated the effect of the differential encoder on receiver performance at low Eb/No. According to the results of computer simulation, the Eb/No performance in the AWGN channel without the differential encoder is about 2dB better when the BER is 10-1 and about 1dB when the BER is 10-2.

키워드

참고문헌

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