Title :
Spectrum efficiency of microcellular systems
Author :
Prasad, Ramjee ; Kegel, Adriaan
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
A description is given of microcellular mobile radio systems having a Rician faded desired signal, uncorrelated Rayleigh-faded cochannel interferers, and UHF ground-wave path loss characteristics dependent on the location of the turning point which causes two different values of path loss slope. Cochannel interference probability is evaluated as a function of reuse distance, with carried traffic, protection ratio, and turning point as parameters using the Erlang-B formula. The radio spectrum efficiency is analyzed in terms of cochannel interference probability. Contrary to macrocells, the spectrum efficiency of a microcell for practical values of the interference probability (⩽0.1) increases with increases in carried traffic, i.e., blocking probability. As expected, the microcells offer higher spectrum efficiency than macrocells for a specific value of cochannel interference probability
Keywords :
cellular radio; fading; probability; radiofrequency interference; telecommunication channels; Erlang-B formula; Rayleigh-faded cochannel interferers; Rician faded desired signal; UHF ground-wave path loss; blocking probability; carried traffic; cochannel interference probability; microcellular mobile radio systems; protection ratio; radio spectrum efficiency; reuse distance; turning point; Antennas and propagation; Attenuation; Interchannel interference; Land mobile radio; Macrocell networks; Mathematical model; Microcell networks; Rician channels; Traffic control; Turning;
Conference_Titel :
Vehicular Technology Conference, 1991. Gateway to the Future Technology in Motion., 41st IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-87942-582-2
DOI :
10.1109/VETEC.1991.140510
