SciELO - Scientific Electronic Library Online

 
vol.13 número3MEDICIÓN DE ANCHO DE BANDA DE COHERENCIA Y DISPERSIÓN TEMPORAL EN LA BANDA DE 2.4 GHz EN AMBIENTES INTERIORESANÁLISIS EXPERIMENTAL DE UN AMBIENTE WI-FI MULTICELDA índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Revista Facultad de Ingeniería - Universidad de Tarapacá

versión On-line ISSN 0718-1337

Resumen

CORREA A, Cristian; GODOY S, Rodrigo; GROTE H, Walter  y  ORELLANA F, Manuel. EVALUACIÓN DE ENLACES INALÁMBRICOS URBANOS USANDO PROTOCOLO IEEE 802.11b. Rev. Fac. Ing. - Univ. Tarapacá [online]. 2005, vol.13, n.3, pp. 38-44. ISSN 0718-1337.  http://dx.doi.org/10.4067/S0718-13372005000300006.

In this publication a link loss prediction model for fixed outdoor urban wireless WiFi communications using the 2.45 GHz frequency band based on the Okumura-Hata model is proposed. The model evaluates the expected path losses using a modified Okumura’s prediction model and eye inspection of the link to determine the degree of obstruction. Results are checked against experimental data to find that in 90% of the studied links it is accurate within a 5 dB margin. We also analyze the coherence time of these links by performing long term measurements of the received signal.

Palabras clave : Link loss prediction model; IEEE 802.11b protocol; channel coherence time.

        · resumen en Español     · texto en Español     · pdf en Español