ECE 6604 Midterm: ECE 6604 GT Examf10
15 Feb 2019
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Wednesday december 15, 2:50pm - 5:40pm: attempt all questions, all questions are of equal value, open book, open notes, exam, consider the following time-invariant channel model g(t, ) = 2 k2 = n(n + 1)(2n + 1) Xk=0 n k3 : suppose that a mobile station is at distance 2 km from its serving base station and at distances 4 km and 5 km from two co-channel base stations. The path loss is described by the model. P (dbm)(d) = p (dbm)(do) 10 log10 d do! where p (dbm)(do) = 70 dbm, do = 1. 6 km, and = 3. 68. Each link experiences independent log-normal shadowing with shadow standard deviation. 0 hs(t; x(i)) s(t; x(j))i2 dt : 6 marks: by using trigonometric manipulations show that. Msk waveforms: ofdm systems are known to be resilient to timing errors. T (cid:27) is sampled at time instants t = kts + t, where t is a timing o set, to yield the samples.
