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2020_spectrum_challenge

Code used in 2020 Spectrum Challenge
https://www.spectrum-challenge.kr

Problem 3:

Problem Description

I/Q 데이터가 주어질 때 각 타임 슬롯마다 수신되는 신호의 변조 방식 추정
변조 방식은 (BPSK,QPSK,16QAM,8PSK)중 한가지\

Solution

인풋을 2개의 Conv1D 레이어를 통과 시킨후 3개의 FC레이어가 있는 분류 네트워크를 통과시킨다. 학습은 CrossEntropyLoss를 이용하며 AdamW 옵티마이저로 학습된다.

Performance

17.13/20 Point, 86% Accuracy

Problem 4:

Problem Description

각 타임 슬롯 마다 신호가 전송된 서브밴드, 변조 방식 판별\

  • 서브밴드: 전체 주파수 대역은 9개의 서브밴드로 구성 -> 어떤 서브밴드 인지 판별
  • 변조 방식: (BPSK,QPSK,16QAM,8PSK)중 한가지

Solution

인풋을 2개의 Conv1D 레이어를 통과 시킨후 서브밴드, 변조 방식 각각 다른 아웃풋 네트워크(clf_band, clf_mod)를 통하여 예측한다. 학습은 CrossEntropyLoss를 이용하며 AdamW 옵티마이저로 학습된다.

Performance

30/30 Point, 100% Accuracy

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