Power delay profile
Encyclopedia
The power delay profile (PDP) gives the intensity of a signal received through a multipath channel as a function of time delay. The time delay is the difference in travel time between multipath arrivals. The abscissa
is in units of time and the ordinate is usually in decibel
s.
It is easily measured empirically and can be used to extract certain channel's parameters such as the delay spread
.
For Small Scale channel modeling, the power delay profile of the channel is found by taking the spatial average baseband impulse respone of a multipath channel.that is |hb(t;τ)|2 over a local area.
Abscissa
In mathematics, abscissa refers to that element of an ordered pair which is plotted on the horizontal axis of a two-dimensional Cartesian coordinate system, as opposed to the ordinate...
is in units of time and the ordinate is usually in decibel
Decibel
The decibel is a logarithmic unit that indicates the ratio of a physical quantity relative to a specified or implied reference level. A ratio in decibels is ten times the logarithm to base 10 of the ratio of two power quantities...
s.
It is easily measured empirically and can be used to extract certain channel's parameters such as the delay spread
Delay spread
In telecommunications, the delay spread is a measure of the multipath richness of a communications channel.In general, it can be interpreted as the difference between the time of arrival of the earliest significant multipath component and the time of arrival of the latest multipath component.The...
.
For Small Scale channel modeling, the power delay profile of the channel is found by taking the spatial average baseband impulse respone of a multipath channel.that is |hb(t;τ)|2 over a local area.