그림 1. 컬러그리드의 동작 원리. Fig. 1. Operation principle of color grid.
그림 2. 주파수/시간기반 멀티유저 시스템 모델. Fig. 2. Frequency / time based multiuser system model.
그림 3. 16QAM 송신 전력 18dB 컨스텔레이션 및 트랜지션. Fig. 3. Transmitter constellation and transition of signal with 18dB transmitted power and 16QAM.
그림 4. 송신 전력 18dB의 16QAM 수신기 컨스텔레이션 및 트랜지션. Fig. 4. Receiver constellation and transition of signal with 18dB transmitted power and 16QAM.
그림 5. 송신전력 18dB의 128QAM 수신기 컨스텔레이션 및 트랜지션. Fig. 5. Receiver constellation and transition of signal with 18dB transmitted power and 128QAM.
그림 6. 송신전력 21dB의 128QAM 수신기 컨스텔레이션 및 트랜지션. Fig. 6. Receiver constellation and transition of signal with 21dB transmitted power and 128QAM.
그림 7. 송신전력 21dB의 256QAM 송신기 컨스텔레이션 및 트랜지션. Fig. 7. Transmitter constellation and transition of signal with 21dB transmitted power and 256QAM.
그림 8. 송신전력 21dB의 256QAM 수신기 컨스텔레이션 및 트랜지션. Fig. 8. Receiver constellation and transition of signal with 21dB transmitted power and 256QAM.
그림 9. 제안한 기법과 256QAM의 BER. Fig. 9. BER graph of 256QAM and the proposed system.
표 1. 실험 매개 변수값. Table 1. Simulation parameters.
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