Title :
Performance evaluations for urban line-of-sight microcells at 900 MHz using a multi-ray propagation model
Author :
Valenzuela, R.A. ; Greenstein, L.J.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
The authors describe a computer-based analysis/simulation method for evaluating radio link performance in urban microcells. The computer program makes use of two separately reported developments. One is a multi-ray propagation model for urban streets; the other is an analytical method for computing the probability distribution of the bit error rate within the microcell´s coverage area. Optional features included within the computation program are selection antenna diversity at the receiver; diversity switching between microsites; and multiple distributed radio ports in each microcell, to improve radio coverage. Simulation is used in the program to account for the random RF phases among the multiple radio port antennas per microcell. It is shown that, overall, a significant performance improvement can result from using distributed antennas
Keywords :
cellular radio; diversity reception; error statistics; radiowave propagation; telecommunications computing; 900 MHz; UHF; analytical method; bit error rate; cellular radio; computer-based analysis/simulation; coverage area; distributed antennas; diversity switching; multi-ray propagation model; multiple distributed radio ports; probability distribution; radio link performance; random RF phases; receiver; selection antenna diversity; urban line-of-sight microcells; Analytical models; Bit error rate; Computational modeling; Computer simulation; Computer vision; Distributed computing; Microcell networks; Performance analysis; Probability distribution; Radio link;
Conference_Titel :
Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-87942-697-7
DOI :
10.1109/GLOCOM.1991.188700
