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diff --git a/287/CH14/EX14.3/Exa14_3.sci b/287/CH14/EX14.3/Exa14_3.sci
new file mode 100755
index 000000000..d53e9bf69
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+//Determine the minimum signal power required
+
+K = 1.38e-20;
+T = 290;
+Nf = 5;
+EbNt = 13.5;
+Rb = 271;
+Bc = 200;
+Tg = 0;
+Rg = 12;
+Rl = 2.5;
+Fm = 10;
+
+Nt = 10*log10(K*T) + Nf;
+SNr = EbNt + 10*log10(Rb/Bc);
+Smin = EbNt + 10*log10(Rb*1000) + Nt;
+Lpmax = 30 - Smin + (Tg+Rg) - (Rl+Fm );
+
+disp(Smin, 'Min. Signal Power Required (in dBm)')
+disp(Lpmax, 'Max. allowable path loss (in dB)')
+\ No newline at end of file