EVALUACIóN DE ENLACES INALáMBRICOS URBANOS USANDO PROTOCOLO IEEE 802.11b

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.