NRZL NRZI Http netwk hannam ac kr HANNAM
- Slides: 72
디지털-대-디지털 부호화(계속) < NRZ-L와 NRZ-I 부호화 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 9
디지털-대-디지털 부호화(계속) < RZ 부호화 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 11
디지털-대-디지털 부호화(계속) < Manchester와 Differential Manchester 부호화 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 13
아날로그-대-디지털 부호(계속) < PAM Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 23
아날로그-대-디지털 부호(계속) < 양자화된 PAM 신호 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 25
아날로그-대-디지털 부호(계속) < 양자화된 샘플 부호와 크기값 할당 (7비트 2진) < Quantizing using and magnitude Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 26
5. 3 디지털-대-아날로그 부호화 < ASK(Amplitude Shift Keying) < FSK(Frequency Shift Keying) < PSK(Phase Shift Keying) < QAM(Quadrature Amplitude Modulation) Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 33
디지털-대-아날로그 부호(계속) < 위상편이 변조 (PSK: Phase Shift Keying) Ü 위상이 2진 1 또는 0에 따라 변경 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 45
디지털-대-아날로그 부호(계속) < PSK성운 (Constellation) Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 46
디지털-대-아날로그 부호(계속) < 4 -PSK Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 47
디지털-대-아날로그 부호(계속) < 4 -PSK의 특성 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 48
디지털-대-아날로그 부호(계속) < 8 -PSK의 특성 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 49
디지털-대-아날로그 부호(계속) < PSK에서 요구되는 대역폭 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 50
디지털-대-아날로그 부호(계속) < 구상 진폭변조(QAM: Quadrature Amplitude Modulation) Ü ASK와 PSK의 조합 < 4 -QAM과 8 -QAM 성운 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 52
디지털-대-아날로그 부호(계속) < 8 -QAM 신호의 시간 영역 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 53
디지털-대-아날로그 부호(계속) < 16 -QAM 성운 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 54
디지털-대-아날로그 부호(계속) < 비트와 보오 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 55
디지털-대-아날로그 부호(계속) < 비트율과 보오율 비교 Modulation Units Bits/Baud Rate Bit Rate ASK, FSK, 2 -PSK Bit 1 N N 4 -PSK, 4 -QAM Dibit 2 N 2 N 8 -PSK, 8 -QAM Tribit 3 N 3 N 16 -QAM Quadbit 4 N 4 N 32 -QAM Pentabit 5 N 5 N 64 -QAM Hexabit 6 N 6 N 128 -QAM Septabit 7 N 7 N 256 -QAM Octabit 8 N 8 N Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 56
아날로그-대-아날로그 부호화(계속) < AM 대역폭 할당 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 64
아날로그-대-아날로그 부호화(계속) < FM 대역폭 할당 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 69
5. 5 요약 Http: //netwk. hannam. ac. kr HANNAM UNIVERSITY 72
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