Howtosignalprocessing
- What are wireless channels?
- Why is wireless channel unpredictable?
- What is channel impulse response in wireless communication?
What are wireless channels?
A WiFi channel is the frequency at which your router sends out the information to your device. Most routers and devices support several bands for your WiFi connection, most popular being 5 GHz and 2.4 GHz. Each of these ranges gets divided into smaller slots that are channels.
Why is wireless channel unpredictable?
The wireless channel is different and much more unpredictable than the wireline channel because of factors such as multipath and shadow fading, Doppler shift, and time dispersion or delay spread.
What is channel impulse response in wireless communication?
In a more general case, the channel model is the impulse response of the channel medium in the time domain or its Fourier transform in the frequency domain. The channel impulse response of a wireless communication system typically varies randomly over time.
