Computer Networks – Physical Links / Encoding

Demo: On-Off Modulation (Matlab)

Shanno-Hartley

  • Shannon-Hartley Theorem gives the theoretical throughput upper bound:
    • $C=Blog_2(1+\frac{S}{N})$
    • C: Channel Capacity, 带宽理论上限 (bps)
    • B: Bandwidth, 信道带宽 (Hz), limited by ADC, DAC rate
    • S: Signal Power, limited by safety concern
    • N: Noise Power
    • S/N or SNR: 信噪比(dB), SNR = 10 × log10(S/N)

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