Title :
Wide-band channel modelling using a spatial model
Author_Institution :
York Univ., UK
Abstract :
This paper describes the application of a spatial model for the multipath radio channel to wide-band channel modelling. The spatial model models the geographical distribution of scatterers around the transmitter and receiver, and hence predicts the distribution of delay, amplitude, and direction of arrival of multipath components at the receiver. We model the arrival of multipath components within the power-delay profile as a Poisson process, and find an expression for the Poisson parameter in terms of the scatterer density, showing that it is a function of the excess delay of the component. Hence we construct randomly-assigned power-delay profiles, useful for system simulation, and also derive an averaged power-delay profile for the channel
Keywords :
Poisson distribution; delays; direction-of-arrival estimation; electromagnetic wave scattering; land mobile radio; multipath channels; radio receivers; radio transmitters; radiowave propagation; Poisson parameter; Poisson process; amplitude; averaged power-delay profile; delay distribution; direction of arrival; geographical distribution; mobile radio channels; multipath components; multipath radio channel; randomly-assigned power-delay profiles; receiver; scatterer density; spatial model; system simulation; transmitter; wide-band channel modelling; Base stations; Costs; Delay; Light scattering; Power system modeling; Predictive models; Radio transmitters; Receivers; Statistical distributions; Wideband;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on
Conference_Location :
Sun City
Print_ISBN :
0-7803-4281-X
DOI :
10.1109/ISSSTA.1998.726237