Flat fading
Fading basics | types of Fading in wireless communication This page describes Fading basics and types of fading in wireless communication. The Fading types are divided into large scale fading and…
Doppler Spread and Coherence Time
Doppler spread Bd is a measure of spectral broadening caused by the time rate of change of the mobile radio channel and is defined as the range of frequencies over which the…
Coherence Bandwidth
The frequency-domain characteristics of the small scale fading which affects radio signals in the multipath propagation channels strongly depends on the ratio between the bandwidth of transmitted signals and a…
Time Dispersion Parameters
When a signal is transmitted, this signal can suffer a distortion caused by reflections and scattered propagation paths in the radio channel, and these phenomenons cause that an identical signal…
MULTIPATH CHANNEL
Types of multipath channels: Multipath Channel Parameters: To compare the different multipath channels and to quantify them, we define some parameters. They all can be determined from the power delay…
Small-scale Multipath Propagation
Small-scale Fading and Multipath Multipath Fading Multipath Fading: Duration and Frequency Multi-path Propagation Effects Selective Diversity
Two-Ray Model
The two-ray model is used when a single ground reflection dominates the multipath effect, as illustrated in the next figure The received signal consists of two components: The LOS component or ray, which…
path loss models
Path loss Propagation Models in Wireless Communications at 0.8 GHz 1.Introduction In recent years, mobile wireless communications have developed rapidly, leading to make the mobile phones become an integral part…
Large scale path loss in wireless communication
Introduction The limitation of bandwidth has often constrained today’s cellular communication providers’ pursuit to provide high quality contents on wireless devices through mobile broadband networks. This limitation is occasioned by…
