1
\$\begingroup\$

In wireless communication, I am confused about what people are referring to when they use the term 'channel length.' Can someone explain the term or provide me a definition?

\$\endgroup\$
  • 1
    \$\begingroup\$ Can you provide an instance where you saw the term? \$\endgroup\$ – mike65535 Jan 9 at 13:48
1
\$\begingroup\$

We model channels typically as something with a memory. A typical model for such a channel is the tapped delay-line model.

In all the models that understand a channel to have memory, the length is simply the difference between the earliest effect and the latest effect of the channel.

In the tapped delay-line model, the term is effectively identical to delay spread, plus – depending on which book you read – the delay of the earliest impulse response.

I think when you read up on the tapped delay-line model, this will become pretty self-evident.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.