Two adjacent BSs i and j are 30 km apart. The signal strength received by the MS is given by the following expressions.

Where

and x is the distance of the MS from BS i. Assume unity gain for G_r and G_t, given that Pi(t) = 10 Watts, = 100 Watts, f_c = 300 MHz, h_b = 40 m, h_m = 4 m, α = 3.5, x = 1 km, and P_j(t) is the transmission power of BS j.

(a) What is the power transmitted by BS j, so that the MS receives signals of equal strength at x?

(b) If the threshold value E = 1 dB and the distance where handoff is likely to occur is 2 km from BS j, then what is the power transmitted by BS j?

Transcribed Image Text:

GG.P L(x) P(x) = L(x) =69.55+26.16log,f. (MHz)–13.82log,A (m) - a[h(m)] +[44.9-6.55log,h (m)]log(x).