Understanding Small-Scale Fading in Radio Signals

Multipath interference, where two or more versions of the transmitted signal arrive at the receiver at slightly different times and combine destructively.

Mobility results in random frequency dispersion (Doppler shifts) on the different multipath signals, causing the channel to become time-varying.

The relative propagation time of the signals, the speed of the receiver and surrounding objects, and the bandwidth of the transmitted signal (or data rate).

<p>Time dispersion due to multipath propagation delays leads to frequency selectivity in the wireless channel.</p> Signup and view all the answers

<p>Small-scale fading describes rapid fluctuations in signal amplitude over a short period of time or distance, while large-scale path fading refers to the gradual signal attenuation over long distances.</p> Signup and view all the answers

<p>Measure of time difference between multiple signal paths arriving at the receiver</p> Signup and view all the answers

<p>Causes Doppler shift which results in random frequency modulation</p> Signup and view all the answers

<p>Results in time-varying Doppler shift on multipath components</p> Signup and view all the answers

<p>Measures maximum frequency difference for correlated signals; if signal bandwidth is greater, distortion occurs</p> Signup and view all the answers

<p>If signal bandwidth is narrow compared to channel, frequency distortion is minimized</p> Signup and view all the answers