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Shannon's channel theorem states that the information capacity of a channel is directly related to the bandwidth and the signal-to-noise ratio, even if you use
by jbay808 5y ago
Shannon's channel theorem states that the information capacity of a channel is directly related to the bandwidth and the signal-to-noise ratio, even if you use the best possible modulation scheme:
https://en.m.wikipedia.org/wiki/Shannon%E2%80%93Hartley_theorem https://en.m.wikipedia.org/wiki/Shannon%E2%80%93Hartley_theo...
- p1esk 5y agoHe’s talking about throughput, not the information capacity of the channel.
- jbay808 5y agoCan you explain the difference? They seem to me like virtually the same concept, but you seem to see an important distinction.
- p1esk 5y agoChannel capacity is an ideal theoretical concept establishing a maximum data transmission rate over a channel with strong assumptions about the noise in that channel. Throughput is what you actually get in the real world, and it depends on many things, including a modulation scheme, retransmission protocols, specific noise models, etc.
- jbay808 5y agoFair enough. But in review, they were indeed talking about the capacity: > Or using the word "bandwidth" to refer to "capacity"[...]